diff --git a/Packages/design/styles/components/selectTree.styl b/Packages/design/styles/components/selectTree.styl
index f65135ec0..d47a988cf 100644
--- a/Packages/design/styles/components/selectTree.styl
+++ b/Packages/design/styles/components/selectTree.styl
@@ -8,50 +8,63 @@ $gray4 = #C0C0C0
 $gray5 = #9B9B9B
 $gray6 = #303030
 
-.select-tree
-  background-color: white
+.select-tree-root
 
-  &, a.tree-back, .tree-breadcrumb span, .tree-node, .tree-leaf
-    transition(all 0.3s ease)
+  .tree-content
+    background-color: white
+    position: relative
+
+    &
+    .tree-search
+    a.tree-back
+    .tree-breadcrumb span
+    .tree-node
+    .tree-leaf
+      transition(all 0.3s ease)
+
+  &.selected
+
+    label.tree-leaf.active
+      box-shadow: 0 0 0 10px white, inset 0 0 0 200px white
+
+    .tree-content
+      background-color: transparent
+
+    &>.tree-content
+      border-color: transparent
+      border-radius: 0
+
+      .tree-search
+        opacity: 0
+
+    &, .select-tree
+
+      &:not(.open)>.tree-content
+
+        &>.tree-inputs
+        &>.tree-breadcrumb
+          display: none
+
+      &>.tree-content>.tree-options
+
+        &>.tree-inputs>label:not(.active)
+        &>.tree-breadcrumb a
+        &>.tree-breadcrumb span
+          color: transparent
+
+        &>.tree-inputs>label.tree-node:not(.active)
+          border-color: transparent
 
 .select-tree-root
-  &>*:first-child
-    transition(all 0.3s ease)
-
-.select-tree-root.selected
-  border-color: transparent
-  border-radius: 0
-  // height: 26px
-
-  &, .select-tree
-    background-color: transparent
-
-    &:not(.open)>.tree-options
-      &>.tree-inputs, &>.tree-breadcrumb
-        display: none
-
-    &.open>.tree-options
-      &>.tree-inputs>label:not(.active), &>.tree-breadcrumb a, &>.tree-breadcrumb span
-        color: transparent
-      &>.tree-inputs>label.tree-node:not(.active)
-        border-color: transparent
-
-  .tree-search
-    opacity: 0
-
-  &>.tree-options
-    background-color: transparent
-
-  label.tree-leaf.active
-    box-shadow: 0 0 0 10px white, inset 0 0 0 200px white
-
-.select-tree-root
-  border: 1px solid $gray3
-  border-radius: 5px
   display: inline-block
-  overflow: hidden
+  position: relative
 
-  &>.tree-options
+  &>.tree-content
+    border: 1px solid $gray3
+    border-radius: 5px
+    overflow: hidden
+
+  &>.tree-content>.tree-options
     transform(scale(1))
     transition(height 0.3s ease)
 
@@ -89,10 +102,16 @@ $gray6 = #303030
 
   .select-tree-node
     left: 0
+    overflow: hidden
     position: fixed
     width: 100%
     z-index: 2
 
+    &
+    .tree-content
+    .tree-inputs
+      height: 100%
+
   .tree-options
     overflow: hidden
     position: relative
@@ -129,5 +148,87 @@ $gray6 = #303030
         transition(box-shadow 0.3s ease)
         z-index: 0
 
+        &:last-child:after
+          display: block
+          content: ''
+          height: 10px
+
     &.collapsed
-      z-index: 2
+      z-index: 1
+
+  .select-tree-common
+    height: 100%
+    overflow: hidden
+    padding-left: 6px
+    position: absolute
+    right: -100%
+    top: 0
+    width: 100%
+
+    .content
+      background-color: $gray6
+      border: 1px solid $gray5
+      border-radius: 5px
+      color: white
+      opacity: 0.9
+      padding: 5px 12px 12px
+      position: absolute
+      top: 50%
+      transform(translateY(-50%))
+      width: calc(100% - 6px)
+
+      h5.title
+        color: $gray5
+        font-size: 12px
+        font-weight: normal
+        line-height: 20px
+        margin: 0
+
+.select-tree-root
+
+  &>.tree-content
+    transform(scale(0))
+    transform-origin(100% 50%)
+    transition(all 0.3s ease)
+
+  .select-tree-common .content
+    margin-left: calc(-100% - 6px)
+    transition(all 0.3s ease 0.3s)
+
+  &.started
+
+    &>.tree-content
+      transform(scale(1))
+
+    .select-tree-common .content
+      margin-left: 0
+
+  &.interacted
+
+    .select-tree-common
+      overflow: visible
+
+      .content
+        animation-name: selectTreeCommonCloseLeft
+        animation-duration: 0.3s
+        animation-iteration-count: 1
+        animation-direction: alternate
+        animation-timing-function: ease-out
+        animation-fill-mode: forwards
+
+@keyframes selectTreeCommonCloseLeft {
+  from {
+    height: 37px
+    display: table
+    margin-left: 0
+    opacity: 1
+    visibility: visible
+  }
+  to {
+    height: 100%
+    margin-left: calc(-100% - 6px)
+    opacity: 0
+    visibility: hidden
+    width: calc(100% - 6px)
+  }
+}
diff --git a/Packages/ohif-core/components/base/component.js b/Packages/ohif-core/client/components/base/component.js
similarity index 100%
rename from Packages/ohif-core/components/base/component.js
rename to Packages/ohif-core/client/components/base/component.js
diff --git a/Packages/ohif-core/components/base/index.js b/Packages/ohif-core/client/components/base/index.js
similarity index 100%
rename from Packages/ohif-core/components/base/index.js
rename to Packages/ohif-core/client/components/base/index.js
diff --git a/Packages/ohif-core/components/base/mixin.js b/Packages/ohif-core/client/components/base/mixin.js
similarity index 100%
rename from Packages/ohif-core/components/base/mixin.js
rename to Packages/ohif-core/client/components/base/mixin.js
diff --git a/Packages/ohif-core/components/base/mixins/component.js b/Packages/ohif-core/client/components/base/mixins/component.js
similarity index 100%
rename from Packages/ohif-core/components/base/mixins/component.js
rename to Packages/ohif-core/client/components/base/mixins/component.js
diff --git a/Packages/ohif-core/components/base/mixins/form.js b/Packages/ohif-core/client/components/base/mixins/form.js
similarity index 100%
rename from Packages/ohif-core/components/base/mixins/form.js
rename to Packages/ohif-core/client/components/base/mixins/form.js
diff --git a/Packages/ohif-core/components/base/mixins/formItem.js b/Packages/ohif-core/client/components/base/mixins/formItem.js
similarity index 100%
rename from Packages/ohif-core/components/base/mixins/formItem.js
rename to Packages/ohif-core/client/components/base/mixins/formItem.js
diff --git a/Packages/ohif-core/components/base/mixins/group.js b/Packages/ohif-core/client/components/base/mixins/group.js
similarity index 100%
rename from Packages/ohif-core/components/base/mixins/group.js
rename to Packages/ohif-core/client/components/base/mixins/group.js
diff --git a/Packages/ohif-core/components/base/mixins/groupRadio.js b/Packages/ohif-core/client/components/base/mixins/groupRadio.js
similarity index 100%
rename from Packages/ohif-core/components/base/mixins/groupRadio.js
rename to Packages/ohif-core/client/components/base/mixins/groupRadio.js
diff --git a/Packages/ohif-core/components/base/mixins/input.js b/Packages/ohif-core/client/components/base/mixins/input.js
similarity index 100%
rename from Packages/ohif-core/components/base/mixins/input.js
rename to Packages/ohif-core/client/components/base/mixins/input.js
diff --git a/Packages/ohif-core/components/base/mixins/schemaData.js b/Packages/ohif-core/client/components/base/mixins/schemaData.js
similarity index 100%
rename from Packages/ohif-core/components/base/mixins/schemaData.js
rename to Packages/ohif-core/client/components/base/mixins/schemaData.js
diff --git a/Packages/ohif-core/components/base/mixins/select.js b/Packages/ohif-core/client/components/base/mixins/select.js
similarity index 100%
rename from Packages/ohif-core/components/base/mixins/select.js
rename to Packages/ohif-core/client/components/base/mixins/select.js
diff --git a/Packages/ohif-core/components/base/mixins/select2.js b/Packages/ohif-core/client/components/base/mixins/select2.js
similarity index 100%
rename from Packages/ohif-core/components/base/mixins/select2.js
rename to Packages/ohif-core/client/components/base/mixins/select2.js
diff --git a/Packages/ohif-core/components/base/mixins/selectTree.js b/Packages/ohif-core/client/components/base/mixins/selectTree.js
similarity index 100%
rename from Packages/ohif-core/components/base/mixins/selectTree.js
rename to Packages/ohif-core/client/components/base/mixins/selectTree.js
diff --git a/Packages/ohif-core/components/base/template.js b/Packages/ohif-core/client/components/base/template.js
similarity index 100%
rename from Packages/ohif-core/components/base/template.js
rename to Packages/ohif-core/client/components/base/template.js
diff --git a/Packages/ohif-core/components/base/templates/custom.html b/Packages/ohif-core/client/components/base/templates/custom.html
similarity index 100%
rename from Packages/ohif-core/components/base/templates/custom.html
rename to Packages/ohif-core/client/components/base/templates/custom.html
diff --git a/Packages/ohif-core/components/base/templates/div.html b/Packages/ohif-core/client/components/base/templates/div.html
similarity index 100%
rename from Packages/ohif-core/components/base/templates/div.html
rename to Packages/ohif-core/client/components/base/templates/div.html
diff --git a/Packages/ohif-core/components/base/templates/form.html b/Packages/ohif-core/client/components/base/templates/form.html
similarity index 100%
rename from Packages/ohif-core/components/base/templates/form.html
rename to Packages/ohif-core/client/components/base/templates/form.html
diff --git a/Packages/ohif-core/components/base/templates/input.html b/Packages/ohif-core/client/components/base/templates/input.html
similarity index 100%
rename from Packages/ohif-core/components/base/templates/input.html
rename to Packages/ohif-core/client/components/base/templates/input.html
diff --git a/Packages/ohif-core/components/base/templates/select.html b/Packages/ohif-core/client/components/base/templates/select.html
similarity index 100%
rename from Packages/ohif-core/components/base/templates/select.html
rename to Packages/ohif-core/client/components/base/templates/select.html
diff --git a/Packages/ohif-core/components/base/wrappers/label.html b/Packages/ohif-core/client/components/base/wrappers/label.html
similarity index 100%
rename from Packages/ohif-core/components/base/wrappers/label.html
rename to Packages/ohif-core/client/components/base/wrappers/label.html
diff --git a/Packages/ohif-core/components/base/wrappers/title.html b/Packages/ohif-core/client/components/base/wrappers/title.html
similarity index 100%
rename from Packages/ohif-core/components/base/wrappers/title.html
rename to Packages/ohif-core/client/components/base/wrappers/title.html
diff --git a/Packages/ohif-core/components/bootstrap/form/form.html b/Packages/ohif-core/client/components/bootstrap/form/form.html
similarity index 100%
rename from Packages/ohif-core/components/bootstrap/form/form.html
rename to Packages/ohif-core/client/components/bootstrap/form/form.html
diff --git a/Packages/ohif-core/components/bootstrap/form/group.html b/Packages/ohif-core/client/components/bootstrap/form/group.html
similarity index 100%
rename from Packages/ohif-core/components/bootstrap/form/group.html
rename to Packages/ohif-core/client/components/bootstrap/form/group.html
diff --git a/Packages/ohif-core/components/bootstrap/index.js b/Packages/ohif-core/client/components/bootstrap/index.js
similarity index 100%
rename from Packages/ohif-core/components/bootstrap/index.js
rename to Packages/ohif-core/client/components/bootstrap/index.js
diff --git a/Packages/ohif-core/components/bootstrap/input/groupRadio.html b/Packages/ohif-core/client/components/bootstrap/input/groupRadio.html
similarity index 100%
rename from Packages/ohif-core/components/bootstrap/input/groupRadio.html
rename to Packages/ohif-core/client/components/bootstrap/input/groupRadio.html
diff --git a/Packages/ohif-core/components/bootstrap/input/radio.html b/Packages/ohif-core/client/components/bootstrap/input/radio.html
similarity index 100%
rename from Packages/ohif-core/components/bootstrap/input/radio.html
rename to Packages/ohif-core/client/components/bootstrap/input/radio.html
diff --git a/Packages/ohif-core/components/bootstrap/input/select.html b/Packages/ohif-core/client/components/bootstrap/input/select.html
similarity index 100%
rename from Packages/ohif-core/components/bootstrap/input/select.html
rename to Packages/ohif-core/client/components/bootstrap/input/select.html
diff --git a/Packages/ohif-core/client/components/bootstrap/input/selectTree.html b/Packages/ohif-core/client/components/bootstrap/input/selectTree.html
new file mode 100644
index 000000000..d04514164
--- /dev/null
+++ b/Packages/ohif-core/client/components/bootstrap/input/selectTree.html
@@ -0,0 +1,93 @@
+<template name="selectTree">
+    {{#group (extend this
+        class=(concat
+            'select-tree '
+            (valueIf this.root '' 'select-tree-root ')
+            this.class
+        )
+        mixins=(concat 'selectTree ' this.mixins)
+    )}}
+        {{>UI.contentBlock}}
+        <div class="tree-content">
+            {{#let currentNode=this.currentNode.get}}
+                {{#if (and (not this.root) (ne this.search false))}}
+                    {{>inputText
+                        label=this.label
+                        labelClass='tree-search'
+                        placeholder=(choose this.searchPlaceholder 'Search')
+                    }}
+                {{/if}}
+                <div class="tree-options {{#if currentNode}}collapsed{{/if}}">
+                    {{#if this.root}}
+                        {{>selectTreeBreadcrumb component=this.component}}
+                    {{/if}}
+                    <div class="tree-inputs">
+                        {{#each item in (reactive this.items)}}
+                            {{>inputRadio
+                                class=this.radioClass
+                                name=this.key
+                                value=item.value
+                                label=item.label
+                                labelClass=(valueIf (isArray item.items) 'tree-node' 'tree-leaf')
+                                checked=(eq item.value (reactive this.value))
+                            }}
+                        {{/each}}
+                    </div>
+                    {{#if (and currentNode (isArray currentNode.items))}}
+                        {{>selectTree (clone this
+                            items=currentNode.items
+                            root=(choose this.root this.component)
+                            class='select-tree-node'
+                        )}}
+                    {{/if}}
+                </div>
+            {{/let}}
+        </div>
+        {{#unless this.root}}
+            {{>selectTreeCommon this}}
+        {{/unless}}
+    {{/group}}
+</template>
+
+<template name="selectTreeCommon">
+    <div class="select-tree-common">
+        <div class="content">
+            <h5 class="title">Common</h5>
+        </div>
+    </div>
+</template>
+
+<template name="selectTreeBreadcrumb">
+    <div class="tree-breadcrumb clearfix">
+        {{>selectTreeBreadcrumbParent
+            component=this.component.parent
+            index=1
+        }}
+        {{#let currentNode=this.component.parent.templateInstance.data.currentNode.get}}
+            <span class="tree-current-node">{{currentNode.label}}</span>
+        {{/let}}
+    </div>
+</template>
+
+<template name="selectTreeBreadcrumbParent">
+    {{#let parent=this.component.parent}}
+        {{#let parentNode=(reactive parent.templateInstance.data.currentNode)}}
+            {{#if parentNode}}
+                {{>selectTreeBreadcrumbParent
+                    component=parent
+                    index=(sum this.index 1)
+                }}
+            {{/if}}
+            <span class="path-link">
+                <a href="#" class="tree-back" data-index="{{this.index}}">
+                    {{#if parentNode}}
+                        <span>{{parentNode.label}}</span>
+                    {{else}}
+                        <i class="fa fa-fast-backward"></i>
+                    {{/if}}
+                </a>
+                {{#if parentNode}}<span>/</span>{{/if}}
+            </span>
+        {{/let}}
+    {{/let}}
+</template>
diff --git a/Packages/ohif-core/components/bootstrap/input/selectTree.js b/Packages/ohif-core/client/components/bootstrap/input/selectTree.js
similarity index 82%
rename from Packages/ohif-core/components/bootstrap/input/selectTree.js
rename to Packages/ohif-core/client/components/bootstrap/input/selectTree.js
index 799c07046..98315d451 100644
--- a/Packages/ohif-core/components/bootstrap/input/selectTree.js
+++ b/Packages/ohif-core/client/components/bootstrap/input/selectTree.js
@@ -4,16 +4,20 @@ import { _ } from 'meteor/underscore';
 import { $ } from 'meteor/jquery';
 
 // TODO: use npm dependency
-import transition from 'meteor/ohif:core/lib/third-party/transition-to-from-auto';
+import transition from 'meteor/ohif:core/client/lib/third-party/transition-to-from-auto';
 
 Template.selectTree.onRendered(() => {
     const instance = Template.instance();
     const component = instance.$('.select-tree:first').data('component');
     const rootComponent = instance.data.root || component;
     const rootInstance = rootComponent.templateInstance;
+    const $treeRoot = rootInstance.$('.select-tree-root:first').first();
 
     instance.component = component;
 
+    // Start the component transitions
+    $treeRoot.addClass('started');
+
     // Update the component's viewport height
     instance.updateHeight = () => {
         const height = rootInstance.$('.tree-options:last').data('height');
@@ -28,18 +32,9 @@ Template.selectTree.onRendered(() => {
 
     // Put the component in selected state
     instance.setSelected = (flag) => {
-        const $treeRoot = rootInstance.$('.select-tree-root:first').first();
-        const $firstChild = $treeRoot.children().first();
         if (flag) {
-            const search = rootInstance.$('.tree-search').outerHeight() | 0;
-            const leaf = $treeRoot.find('.tree-leaf.active').position().top;
-            const martinTop = search + leaf;
-            // $firstChild.css('margin-top', -martinTop);
-            // $treeRoot.css('margin-top', martinTop).addClass('selected');
             $treeRoot.addClass('selected');
         } else {
-            // $treeRoot.removeClass('selected').css('margin-top', '');
-            // $firstChild.css('margin-top', '');
             $treeRoot.removeClass('selected');
         }
     };
@@ -60,7 +55,7 @@ Template.selectTree.onRendered(() => {
         });
     });
 
-    const selector = '.select-tree:first>.tree-options>.tree-breadcrumb .path-link';
+    const selector = '.select-tree:first>.tree-content>.tree-options>.tree-breadcrumb .path-link';
     instance.$(selector).css('width', 0).each((index, element) => {
         transition({
             element: element,
@@ -72,7 +67,12 @@ Template.selectTree.onRendered(() => {
 });
 
 Template.selectTree.events({
-    'change .select-tree:first>.tree-options>.tree-inputs>label>input'(event, instance) {
+    'click .select-tree-root'(event, instance) {
+        // Detect the first interaction with the component and do the animation
+        $(event.currentTarget).addClass('interacted');
+    },
+
+    'change .select-tree:first>.tree-content>.tree-options>.tree-inputs>label>input'(event, instance) {
         const component = instance.component;
         const $target = $(event.target);
         const $label = $target.closest('label');
@@ -111,7 +111,7 @@ Template.selectTree.events({
         }
     },
 
-    'click .select-tree:first>.tree-options>.tree-breadcrumb .tree-back'(event, instance) {
+    'click .select-tree:first>.tree-content>.tree-options>.tree-breadcrumb .tree-back'(event, instance) {
         const rootComponent = instance.data.root || instance.component;
         const rootInstance = rootComponent.templateInstance;
 
diff --git a/Packages/ohif-core/components/bootstrap/input/text.html b/Packages/ohif-core/client/components/bootstrap/input/text.html
similarity index 100%
rename from Packages/ohif-core/components/bootstrap/input/text.html
rename to Packages/ohif-core/client/components/bootstrap/input/text.html
diff --git a/Packages/ohif-core/components/index.js b/Packages/ohif-core/client/components/index.js
similarity index 100%
rename from Packages/ohif-core/components/index.js
rename to Packages/ohif-core/client/components/index.js
diff --git a/Packages/ohif-core/components/playground/playground.html b/Packages/ohif-core/client/components/playground/playground.html
similarity index 100%
rename from Packages/ohif-core/components/playground/playground.html
rename to Packages/ohif-core/client/components/playground/playground.html
diff --git a/Packages/ohif-core/components/playground/playground.js b/Packages/ohif-core/client/components/playground/playground.js
similarity index 100%
rename from Packages/ohif-core/components/playground/playground.js
rename to Packages/ohif-core/client/components/playground/playground.js
diff --git a/Packages/ohif-core/helpers/blaze.js b/Packages/ohif-core/client/helpers/blaze.js
similarity index 100%
rename from Packages/ohif-core/helpers/blaze.js
rename to Packages/ohif-core/client/helpers/blaze.js
diff --git a/Packages/ohif-core/helpers/data.js b/Packages/ohif-core/client/helpers/data.js
similarity index 100%
rename from Packages/ohif-core/helpers/data.js
rename to Packages/ohif-core/client/helpers/data.js
diff --git a/Packages/ohif-core/helpers/debug.js b/Packages/ohif-core/client/helpers/debug.js
similarity index 100%
rename from Packages/ohif-core/helpers/debug.js
rename to Packages/ohif-core/client/helpers/debug.js
diff --git a/Packages/ohif-core/helpers/index.js b/Packages/ohif-core/client/helpers/index.js
similarity index 100%
rename from Packages/ohif-core/helpers/index.js
rename to Packages/ohif-core/client/helpers/index.js
diff --git a/Packages/ohif-core/helpers/logical.js b/Packages/ohif-core/client/helpers/logical.js
similarity index 100%
rename from Packages/ohif-core/helpers/logical.js
rename to Packages/ohif-core/client/helpers/logical.js
diff --git a/Packages/ohif-core/helpers/number.js b/Packages/ohif-core/client/helpers/number.js
similarity index 100%
rename from Packages/ohif-core/helpers/number.js
rename to Packages/ohif-core/client/helpers/number.js
diff --git a/Packages/ohif-core/helpers/string.js b/Packages/ohif-core/client/helpers/string.js
similarity index 100%
rename from Packages/ohif-core/helpers/string.js
rename to Packages/ohif-core/client/helpers/string.js
diff --git a/Packages/ohif-core/helpers/typing.js b/Packages/ohif-core/client/helpers/typing.js
similarity index 100%
rename from Packages/ohif-core/helpers/typing.js
rename to Packages/ohif-core/client/helpers/typing.js
diff --git a/Packages/ohif-core/client/index.js b/Packages/ohif-core/client/index.js
new file mode 100644
index 000000000..df6c99701
--- /dev/null
+++ b/Packages/ohif-core/client/index.js
@@ -0,0 +1,6 @@
+import './lib';
+import './components';
+import './helpers';
+import './ui';
+
+import './routes.js';
diff --git a/Packages/ohif-core/lib/blaze.js b/Packages/ohif-core/client/lib/blaze.js
similarity index 100%
rename from Packages/ohif-core/lib/blaze.js
rename to Packages/ohif-core/client/lib/blaze.js
diff --git a/Packages/ohif-core/lib/index.js b/Packages/ohif-core/client/lib/index.js
similarity index 68%
rename from Packages/ohif-core/lib/index.js
rename to Packages/ohif-core/client/lib/index.js
index 8a85bfbf1..1699c91cd 100644
--- a/Packages/ohif-core/lib/index.js
+++ b/Packages/ohif-core/client/lib/index.js
@@ -1,2 +1,3 @@
 import './blaze.js';
 import './string.js';
+import './user.js';
diff --git a/Packages/ohif-core/lib/string.js b/Packages/ohif-core/client/lib/string.js
similarity index 100%
rename from Packages/ohif-core/lib/string.js
rename to Packages/ohif-core/client/lib/string.js
diff --git a/Packages/ohif-core/lib/third-party/transition-to-from-auto.js b/Packages/ohif-core/client/lib/third-party/transition-to-from-auto.js
similarity index 100%
rename from Packages/ohif-core/lib/third-party/transition-to-from-auto.js
rename to Packages/ohif-core/client/lib/third-party/transition-to-from-auto.js
diff --git a/Packages/ohif-core/client/lib/user.js b/Packages/ohif-core/client/lib/user.js
new file mode 100644
index 000000000..fb0f00e36
--- /dev/null
+++ b/Packages/ohif-core/client/lib/user.js
@@ -0,0 +1,32 @@
+import { OHIF } from 'meteor/ohif:core';
+
+OHIF.user = {};
+
+// Throw error if there is no user logged in
+OHIF.user.validate = () => {
+    if (!Meteor.userId()) {
+        throw new Meteor.Error('not-authorized');
+    }
+};
+
+// Get the persistent data by key
+OHIF.user.getData = key => {
+    // Check if there is an user logged in
+    OHIF.user.validate();
+
+    // Get the user persistent data
+    const data = Meteor.user().profile.persistent;
+
+    if (data) {
+        return data[key];
+    }
+};
+
+// Store the persistent data by giving a key and a value to store
+OHIF.user.setData = (key, value) => {
+    // Check if there is an user logged in
+    OHIF.user.validate();
+
+    // Call the update method on server-side
+    Meteor.call('userDataSet', key, value);
+};
diff --git a/Packages/ohif-core/client/routes.js b/Packages/ohif-core/client/routes.js
new file mode 100644
index 000000000..4338aaea6
--- /dev/null
+++ b/Packages/ohif-core/client/routes.js
@@ -0,0 +1,5 @@
+import { Router } from 'meteor/clinical:router';
+
+Router.route('/playground', function() {
+    this.render('componentPlayground');
+});
diff --git a/Packages/ohif-core/ui/draggable/draggable.js b/Packages/ohif-core/client/ui/draggable/draggable.js
similarity index 100%
rename from Packages/ohif-core/ui/draggable/draggable.js
rename to Packages/ohif-core/client/ui/draggable/draggable.js
diff --git a/Packages/ohif-core/ui/index.js b/Packages/ohif-core/client/ui/index.js
similarity index 100%
rename from Packages/ohif-core/ui/index.js
rename to Packages/ohif-core/client/ui/index.js
diff --git a/Packages/ohif-core/ui/resizable/resizable.js b/Packages/ohif-core/client/ui/resizable/resizable.js
similarity index 100%
rename from Packages/ohif-core/ui/resizable/resizable.js
rename to Packages/ohif-core/client/ui/resizable/resizable.js
diff --git a/Packages/ohif-core/ui/resizable/resizable.styl b/Packages/ohif-core/client/ui/resizable/resizable.styl
similarity index 100%
rename from Packages/ohif-core/ui/resizable/resizable.styl
rename to Packages/ohif-core/client/ui/resizable/resizable.styl
diff --git a/Packages/ohif-core/components/bootstrap/input/selectTree.html b/Packages/ohif-core/components/bootstrap/input/selectTree.html
deleted file mode 100644
index 80ca4ea9d..000000000
--- a/Packages/ohif-core/components/bootstrap/input/selectTree.html
+++ /dev/null
@@ -1,80 +0,0 @@
-<template name="selectTree">
-    {{#group (extend this
-        class=(concat
-            'select-tree '
-            (valueIf this.root '' 'select-tree-root ')
-            this.class
-        )
-        mixins=(concat 'selectTree ' this.mixins)
-    )}}
-        {{>UI.contentBlock}}
-        {{#let currentNode=this.currentNode.get}}
-            {{#if (and (not this.root) (ne this.search false))}}
-                {{>inputText
-                    label=this.label
-                    labelClass='tree-search'
-                    placeholder=(choose this.searchPlaceholder 'Search')
-                }}
-            {{/if}}
-            <div class="tree-options {{#if currentNode}}collapsed{{/if}}">
-                {{#if this.root}}
-                    {{>selectTreeBreadcrumb component=this.component}}
-                {{/if}}
-                <div class="tree-inputs">
-                    {{#each item in (reactive this.items)}}
-                        {{>inputRadio
-                            class=this.radioClass
-                            name=this.key
-                            value=item.value
-                            label=item.label
-                            labelClass=(valueIf (isArray item.items) 'tree-node' 'tree-leaf')
-                            checked=(eq item.value (reactive this.value))
-                        }}
-                    {{/each}}
-                </div>
-                {{#if (and currentNode (isArray currentNode.items))}}
-                    {{>selectTree (clone this
-                        items=currentNode.items
-                        root=(choose this.root this.component)
-                        class='select-tree-node'
-                    )}}
-                {{/if}}
-            </div>
-        {{/let}}
-    {{/group}}
-</template>
-
-<template name="selectTreeBreadcrumb">
-    <div class="tree-breadcrumb clearfix">
-        {{>selectTreeBreadcrumbParent
-            component=this.component.parent
-            index=1
-        }}
-        {{#let currentNode=this.component.parent.templateInstance.data.currentNode.get}}
-            <span class="tree-current-node">{{currentNode.label}}</span>
-        {{/let}}
-    </div>
-</template>
-
-<template name="selectTreeBreadcrumbParent">
-    {{#let parent=this.component.parent}}
-        {{#let parentNode=(reactive parent.templateInstance.data.currentNode)}}
-            {{#if parentNode}}
-                {{>selectTreeBreadcrumbParent
-                    component=parent
-                    index=(sum this.index 1)
-                }}
-            {{/if}}
-            <span class="path-link">
-                <a href="#" class="tree-back" data-index="{{this.index}}">
-                    {{#if parentNode}}
-                        <span>{{parentNode.label}}</span>
-                    {{else}}
-                        <i class="fa fa-fast-backward"></i>
-                    {{/if}}
-                </a>
-                {{#if parentNode}}<span>/</span>{{/if}}
-            </span>
-        {{/let}}
-    {{/let}}
-</template>
diff --git a/Packages/ohif-core/main.js b/Packages/ohif-core/main.js
index e093844f5..fca3563d3 100644
--- a/Packages/ohif-core/main.js
+++ b/Packages/ohif-core/main.js
@@ -1,13 +1,12 @@
-export { OHIF } from './ohif.js';
+/*
+ * Defines the base OHIF object
+ */
 
-import { Meteor } from 'meteor/meteor';
-import { Router } from 'meteor/clinical:router';
+const OHIF = {};
 
-import './lib';
-import './components';
-import './helpers';
-import './ui';
+// Expose the OHIF object to the client if it is on development mode
+if (Meteor.isDevelopment && Meteor.isClient) {
+    window.OHIF = OHIF;
+}
 
-Router.route('/playground', function() {
-    this.render('componentPlayground');
-});
+export { OHIF };
diff --git a/Packages/ohif-core/ohif.js b/Packages/ohif-core/ohif.js
deleted file mode 100644
index 5af84d941..000000000
--- a/Packages/ohif-core/ohif.js
+++ /dev/null
@@ -1,11 +0,0 @@
-/*
- * Defines the base OHIF object
- */
-
-const OHIF = {};
-
-if (Meteor.isDevelopment) {
-    window.OHIF = OHIF;
-}
-
-export { OHIF };
diff --git a/Packages/ohif-core/package.js b/Packages/ohif-core/package.js
index 5ff932499..67663fa32 100644
--- a/Packages/ohif-core/package.js
+++ b/Packages/ohif-core/package.js
@@ -23,8 +23,15 @@ Package.onUse(function(api) {
 
     // UI Styles
     api.addFiles([
-        'ui/resizable/resizable.styl'
+        'client/ui/resizable/resizable.styl'
     ], 'client');
 
-    api.mainModule('main.js', 'client');
+    api.mainModule('main.js', ['client', 'server']);
+
+    // Client imports and routes
+    api.addFiles('client/index.js', 'client');
+
+    // Server imports and methods
+    api.addFiles('server/index.js', 'server');
+
 });
diff --git a/Packages/ohif-core/server/index.js b/Packages/ohif-core/server/index.js
new file mode 100644
index 000000000..b3741506a
--- /dev/null
+++ b/Packages/ohif-core/server/index.js
@@ -0,0 +1,2 @@
+import './mongo.js';
+import './user.js';
diff --git a/Packages/ohif-core/server/mongo.js b/Packages/ohif-core/server/mongo.js
new file mode 100644
index 000000000..0c28b402b
--- /dev/null
+++ b/Packages/ohif-core/server/mongo.js
@@ -0,0 +1,26 @@
+import { OHIF } from 'meteor/ohif:core';
+import { Meteor } from 'meteor/meteor';
+
+// Mongo data manipulation utilities
+class MongoUtils {
+
+    // Check if there is an user logged in
+    static validateUser() {
+        // Throw error if there is no user logged in
+        if (!Meteor.userId()) {
+            throw new Meteor.Error('not-authorized');
+        }
+    }
+
+    // Generic callback to MongoDB write operations
+    static writeCallback(error, affected) {
+        // Throw error if it was not possible to complete the write operation
+        if (error) {
+            throw new Meteor.Error('data-write', error);
+        }
+    }
+
+}
+
+// Expose the class in the OHIF object
+OHIF.MongoUtils = MongoUtils;
diff --git a/Packages/ohif-core/server/user.js b/Packages/ohif-core/server/user.js
new file mode 100644
index 000000000..c18bb7e41
--- /dev/null
+++ b/Packages/ohif-core/server/user.js
@@ -0,0 +1,54 @@
+import { OHIF } from 'meteor/ohif:core';
+import { Meteor } from 'meteor/meteor';
+
+// Manipulate user's persistent data
+class UserData {
+
+    // Get the persistent data by key
+    static get(key) {
+        // Check if there is an user logged in
+        OHIF.MongoUtils.validateUser();
+
+        // Get the user's profile data
+        const profileData = Meteor.user().profile;
+
+        // Return the data if it is set
+        if (profileData.persistent) {
+            return profileData.persistent[key];
+        }
+    }
+
+    // Store the persistent data by giving a key and a value to store
+    static set(key, value) {
+        // Check if there is an user logged in
+        OHIF.MongoUtils.validateUser();
+
+        // Build the query to update only the current user's data
+        var query = {
+            _id: Meteor.userId()
+        };
+
+        // Build the path to the persistent data with the given key
+        const persistentPath = `profile.persistent.${key}`;
+
+        // Build the data to be updated
+        var data = {
+            $set: {
+                [persistentPath]: value
+            }
+        };
+
+        // Update the user's profile data with the persistent information
+        Accounts.users.update(query, data, OHIF.MongoUtils.writeCallback);
+    }
+
+}
+
+// Register the methods
+Meteor.methods({
+    userDataGet: key => UserData.get(key),
+    userDataSet: (key, value) => UserData.set(key, value)
+});
+
+// Expose the class in the OHIF object
+OHIF.UserData = UserData;