diff --git a/images/arrow-bottom.png b/images/arrow-bottom.png
new file mode 100644
index 00000000..9539792e
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diff --git a/images/arrow-bottom1.png b/images/arrow-bottom1.png
new file mode 100644
index 00000000..3d73fc77
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diff --git a/images/arrow-top.png b/images/arrow-top.png
new file mode 100644
index 00000000..65ca815d
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diff --git a/images/arrow-top1.png b/images/arrow-top1.png
new file mode 100644
index 00000000..64f00a8e
Binary files /dev/null and b/images/arrow-top1.png differ
diff --git a/src/index.ts b/src/index.ts
index cec71c8f..fdb95d58 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -52,6 +52,7 @@ export { PropertySuggestionParams, PropertyScore } from './ontodia/widgets/conne
 export * from './ontodia/workspace/toolbar';
 export { Workspace, WorkspaceProps, WorkspaceLanguage, renderTo } from './ontodia/workspace/workspace';
 export { WorkspaceEventHandler, WorkspaceEventKey } from './ontodia/workspace/workspaceContext';
+export { DraggableHandle } from './ontodia/workspace/draggableHandle';
 
 import * as InternalApi from './internalApi';
 export { InternalApi };
diff --git a/src/ontodia/data/sparql/sparqlDataProviderSettings.ts b/src/ontodia/data/sparql/sparqlDataProviderSettings.ts
index 3a3696bf..7c6881ce 100644
--- a/src/ontodia/data/sparql/sparqlDataProviderSettings.ts
+++ b/src/ontodia/data/sparql/sparqlDataProviderSettings.ts
@@ -461,3 +461,13 @@ const DBPediaOverride: Partial<SparqlDataProviderSettings> = {
     `,
 };
 export const DBPediaSettings: SparqlDataProviderSettings = {...OWLRDFSSettings, ...DBPediaOverride};
+
+const StardogOverride: Partial<SparqlDataProviderSettings> = {
+    fullTextSearch: {
+        prefix: '',
+        queryPattern: `
+        ?inst rdfs:label ?searchLabel.
+        (?searchLabel ?score) <tag:stardog:api:property:textMatch> "\${text}".
+    `}
+};
+export const StardogSettings: SparqlDataProviderSettings = {...OWLRDFSSettings, ...StardogOverride};
diff --git a/src/ontodia/widgets/dialog.tsx b/src/ontodia/widgets/dialog.tsx
index 9f735d48..950e2386 100644
--- a/src/ontodia/widgets/dialog.tsx
+++ b/src/ontodia/widgets/dialog.tsx
@@ -10,26 +10,43 @@ import {
     computePolylineLength,
     getPointAlongPolyline,
     Vector,
-    Rect,
 } from '../diagram/geometry';
+import { DraggableHandle } from '../workspace/draggableHandle';
+
+const DEFAULT_WIDTH = 300;
+const DEFAULT_HEIGHT = 300;
+const MIN_WIDTH = 250;
+const MIN_HEIGHT = 250;
+const MAX_WIDTH = 800;
+const MAX_HEIGHT = 800;
 
-const WIDTH = 300;
-const HEIGHT = 300;
 const ELEMENT_OFFSET = 40;
 const LINK_OFFSET = 20;
 const FOCUS_OFFSET = 20;
 
+const CLASS_NAME = 'ontodia-dialog';
+
 export interface Props extends PaperWidgetProps {
     view: DiagramView;
     target: Element | Link;
 }
 
-export class Dialog extends React.Component<Props, {}> {
+export interface State {
+    width?: number;
+    height?: number;
+}
+
+export class Dialog extends React.Component<Props, State> {
     private unsubscribeFromTarget: Unsubscribe | undefined = undefined;
     private readonly handler = new EventObserver();
 
     private updateAll = () => this.forceUpdate();
 
+    constructor(props: Props) {
+        super(props);
+        this.state = {};
+    }
+
     componentDidMount() {
         this.listenToTarget(this.props.target);
         this.focusOn();
@@ -95,7 +112,7 @@ export class Dialog extends React.Component<Props, {}> {
 
         return {
             x: x1 + ELEMENT_OFFSET,
-            y: (y0 + y1) / 2 - (HEIGHT / 2),
+            y: (y0 + y1) / 2 - (DEFAULT_HEIGHT / 2),
         };
     }
 
@@ -151,8 +168,8 @@ export class Dialog extends React.Component<Props, {}> {
             y: y - FOCUS_OFFSET,
         };
         const max = {
-            x: min.x + WIDTH + FOCUS_OFFSET * 2,
-            y: min.y + HEIGHT + FOCUS_OFFSET * 2,
+            x: min.x + DEFAULT_WIDTH + FOCUS_OFFSET * 2,
+            y: min.y + DEFAULT_HEIGHT + FOCUS_OFFSET * 2,
         };
         return {min, max};
     }
@@ -190,13 +207,66 @@ export class Dialog extends React.Component<Props, {}> {
         paperArea.centerTo(paperCenter);
     }
 
+    private startSize: Vector;
+    private onStartDragging = (e: React.MouseEvent<HTMLDivElement>) => {
+        this.preventSelection();
+        this.startSize = {x: this.state.width || DEFAULT_WIDTH, y: this.state.height || DEFAULT_HEIGHT};
+    }
+
+    private onDragHandleBottom = (e: MouseEvent, dx: number, dy: number) => {
+        const height = Math.max(MIN_HEIGHT, Math.min(MAX_HEIGHT, this.startSize.y + dy));
+        this.setState({height});
+    }
+
+    private onDragHandleRight = (e: MouseEvent, dx: number) => {
+        const width = Math.max(MIN_WIDTH, Math.min(MAX_WIDTH, this.startSize.x + dx));
+        this.setState({width});
+    }
+
+    private onDragHandleBottomRight = (e: MouseEvent, dx: number, dy: number) => {
+        const width = Math.max(MIN_WIDTH, Math.min(MAX_WIDTH, this.startSize.x + dx));
+        const height = Math.max(MIN_HEIGHT, Math.min(MAX_HEIGHT, this.startSize.y + dy));
+        this.setState({width, height});
+    }
+
+    private preventSelection = () => {
+        const onMouseUp = () => {
+            document.body.classList.remove('ontodia--unselectable');
+            document.removeEventListener('mouseup', onMouseUp);
+        };
+        document.addEventListener('mouseup', onMouseUp);
+        document.body.classList.add('ontodia--unselectable');
+    }
+
     render() {
         const {x, y} = this.calculatePosition();
-        const style = {top: y, left: x, height: HEIGHT, width: WIDTH};
+        const width = this.state.width || DEFAULT_WIDTH;
+        const height = this.state.height || DEFAULT_HEIGHT;
+        const style = {
+            top: y,
+            left: x,
+            width,
+            height,
+        };
 
         return (
-            <div className='ontodia-dialog' style={style}>
+            <div className={CLASS_NAME} style={style}>
                 {this.props.children}
+                <DraggableHandle
+                    className={`${CLASS_NAME}__bottom-handle`}
+                    onBeginDragHandle={this.onStartDragging}
+                    onDragHandle={this.onDragHandleBottom}>
+                </DraggableHandle>
+                <DraggableHandle
+                    className={`${CLASS_NAME}__right-handle`}
+                    onBeginDragHandle={this.onStartDragging}
+                    onDragHandle={this.onDragHandleRight}>
+                </DraggableHandle>
+                <DraggableHandle
+                    className={`${CLASS_NAME}__bottom-right-handle`}
+                    onBeginDragHandle={this.onStartDragging}
+                    onDragHandle={this.onDragHandleBottomRight}>
+                </DraggableHandle>
             </div>
         );
     }
diff --git a/src/ontodia/workspace/resizableSidebar.tsx b/src/ontodia/workspace/resizableSidebar.tsx
index 7d4d9238..289576d8 100644
--- a/src/ontodia/workspace/resizableSidebar.tsx
+++ b/src/ontodia/workspace/resizableSidebar.tsx
@@ -5,9 +5,9 @@ import { DraggableHandle } from './draggableHandle';
 export interface Props {
     className?: string;
     dockSide?: DockSide;
-    defaultWidth?: number;
-    minWidth?: number;
-    maxWidth?: number;
+    defaultLength?: number;
+    minLength?: number;
+    maxLength?: number;
     isOpen?: boolean;
     onOpenOrClose?: (open: boolean) => void;
     onStartResize: () => void;
@@ -17,11 +17,13 @@ export interface Props {
 export enum DockSide {
     Left = 1,
     Right,
+    Top,
+    Bottom,
 }
 
 export interface State {
     readonly open?: boolean;
-    readonly width?: number;
+    readonly length?: number;
 }
 
 const CLASS_NAME = 'ontodia-drag-resizable-column';
@@ -29,9 +31,9 @@ const CLASS_NAME = 'ontodia-drag-resizable-column';
 export class ResizableSidebar extends React.Component<Props, State> {
     static readonly defaultProps: Partial<Props> = {
         dockSide: DockSide.Left,
-        minWidth: 0,
-        maxWidth: 500,
-        defaultWidth: 275,
+        minLength: 0,
+        maxLength: 500,
+        defaultLength: 275,
         isOpen: true,
     };
 
@@ -41,7 +43,7 @@ export class ResizableSidebar extends React.Component<Props, State> {
         super(props);
         this.state = {
             open: this.props.isOpen,
-            width: this.defaultWidth(),
+            length: this.defaultWidth(),
         };
     }
 
@@ -52,21 +54,37 @@ export class ResizableSidebar extends React.Component<Props, State> {
     }
 
     private defaultWidth() {
-        const {defaultWidth, maxWidth} = this.props;
-        return Math.min(defaultWidth, maxWidth);
+        const {defaultLength, maxLength} = this.props;
+        return Math.min(defaultLength, maxLength);
+    }
+
+    private getSideClass() {
+        switch (this.props.dockSide) {
+            case DockSide.Left: return `${CLASS_NAME}--docked-left`;
+            case DockSide.Right: return `${CLASS_NAME}--docked-right`;
+            case DockSide.Top: return `${CLASS_NAME}--docked-top`;
+            case DockSide.Bottom: return `${CLASS_NAME}--docked-bottom`;
+            default: return 'docked-right';
+        }
+    }
+
+    private get isHorizontal(): boolean {
+        return this.props.dockSide === DockSide.Top ||
+        this.props.dockSide === DockSide.Bottom;
     }
 
     render() {
-        const isDockedLeft = this.props.dockSide === DockSide.Left;
-        const {open, width} = this.state;
+        const {open, length} = this.state;
 
         const className = `${CLASS_NAME} ` +
-            `${CLASS_NAME}--${isDockedLeft ? 'docked-left' : 'docked-right'} ` +
+            `${this.getSideClass()} ` +
             `${CLASS_NAME}--${open ? 'opened' : 'closed'} ` +
             `${this.props.className || ''}`;
 
+        const style: any = {};
+        style[this.isHorizontal ? 'height' : 'width'] = open ? length : 0;
         return <div className={className}
-            style={{width: open ? width : 0}}>
+            style={style}>
             {open ? this.props.children : null}
             <DraggableHandle className={`${CLASS_NAME}__handle`}
                 onBeginDragHandle={this.onBeginDragHandle}
@@ -79,18 +97,19 @@ export class ResizableSidebar extends React.Component<Props, State> {
     }
 
     private onBeginDragHandle = () => {
-        this.originWidth = this.state.open ? this.state.width : 0;
+        this.originWidth = this.state.open ? this.state.length : 0;
         this.props.onStartResize();
     }
 
     private onDragHandle = (e: MouseEvent, dx: number, dy: number) => {
-        let xDifference = dx;
+        let difference = this.isHorizontal ? dy : dx;
         if (this.props.dockSide === DockSide.Right) {
-            xDifference = -xDifference;
+            difference = -difference;
         }
-        const newWidth = this.originWidth + xDifference;
-        const clampedWidth = Math.max(Math.min(newWidth, this.props.maxWidth), this.props.minWidth);
-        this.toggle({open: clampedWidth > this.props.minWidth, newWidth: clampedWidth});
+        const newWidth = this.originWidth + difference;
+        const clampedWidth = Math.max(Math.min(newWidth, this.props.maxLength), this.props.minLength);
+        const isOpen = this.props.minLength > 0 || clampedWidth > this.props.minLength;
+        this.toggle({open: isOpen, newWidth: clampedWidth});
     }
 
     private toggle(params: {
@@ -105,11 +124,11 @@ export class ResizableSidebar extends React.Component<Props, State> {
             }
         };
 
-        const useDefaultWidth = open && this.state.width === 0 && newWidth === undefined;
+        const useDefaultWidth = open && this.state.length === 0 && newWidth === undefined;
         if (useDefaultWidth) {
-            this.setState({open, width: this.defaultWidth()}, onStateChanged);
+            this.setState({open, length: this.defaultWidth()}, onStateChanged);
         } else {
-            this.setState(newWidth === undefined ? {open} : {open, width: newWidth}, onStateChanged);
+            this.setState(newWidth === undefined ? {open} : {open, length: newWidth}, onStateChanged);
         }
     }
 }
diff --git a/styles/widgets/_dialog.scss b/styles/widgets/_dialog.scss
index c33656c5..323889f5 100644
--- a/styles/widgets/_dialog.scss
+++ b/styles/widgets/_dialog.scss
@@ -4,3 +4,56 @@
   box-shadow: 0 4px 15px 7px rgba(51, 51, 51, 0.05);
   position: absolute;
 }
+
+.ontodia-dialog__bottom-right-handle {
+  position: absolute;
+  bottom: 0;
+  right: 0;
+  width: 0;
+  height: 0;
+  border-style: solid;
+  border-width: 0 0 10px 10px;
+  border-color: transparent transparent #00000060 transparent;
+  cursor: nwse-resize;
+  
+  &::before {
+    content: "";
+    position: absolute;
+    bottom: -10px;
+    right: 0;
+    width: 0;
+    height: 0;
+    border-style: solid;
+    border-width: 0 0 5px 5px;
+    border-color: transparent transparent #00000060 transparent;
+  }
+
+  &:hover {
+    border-color: transparent transparent #00000080 transparent;
+  }
+}
+
+.ontodia-dialog__bottom-handle, .ontodia-dialog__right-handle {
+  position: absolute;
+  opacity: 0;
+  background-color: black;
+
+  &:hover {
+    opacity: 0.1;
+  }
+}
+
+.ontodia-dialog__bottom-handle {
+  bottom: 0;
+  width: 100%;
+  height: 5px;
+  cursor: ns-resize;
+}
+
+.ontodia-dialog__right-handle {
+  top: 0;
+  right: 0;
+  width: 5px;
+  height: 100%;
+  cursor: ew-resize;
+}
\ No newline at end of file
diff --git a/styles/workspace/_resizableSidebar.scss b/styles/workspace/_resizableSidebar.scss
index d88b3df3..36ae3a95 100644
--- a/styles/workspace/_resizableSidebar.scss
+++ b/styles/workspace/_resizableSidebar.scss
@@ -1,3 +1,23 @@
+.ontodia-drag-resizable-column.ontodia-drag-resizable-column--docked-bottom,
+.ontodia-drag-resizable-column.ontodia-drag-resizable-column--docked-top {
+  .ontodia-drag-resizable-column__handle {
+    height: 8px;
+    width: 100%;
+    top: initial;
+    left: 0;
+    cursor: ns-resize;
+  }
+
+  .ontodia-drag-resizable-column__handle-btn {
+    height: 100%;
+    width: 40px;
+    top: 0;
+    left: 50%;
+    margin-left: -20px;
+    margin-top: 0px;
+  }
+}
+
 .ontodia-drag-resizable-column {
   display: flex;
   flex-direction: column;
@@ -5,10 +25,11 @@
 
   &__handle {
     background: #fff url("../images/resizable-column-handle.png") repeat;
+    width: 8px;
     height: 100%;
     position: absolute;
     top: 0;
-    width: 8px;
+    left: initial;
     z-index: 2;
     -webkit-transition: 0.3s;
     -moz-transition: 0.3s;
@@ -70,4 +91,18 @@
     &::before { background-image: url("../images/arrow-right.png"); }
     &:hover::before { background-image: url("../images/arrow-right1.png"); }
   }
+
+  &--docked-top { margin-bottom: 8px; }
+  &--docked-top &__handle { bottom: -8px; }
+  &--docked-top &__handle-btn {
+    &::before { background-image: url("../images/arrow-top.png"); }
+    &:hover::before { background-image: url("../images/arrow-top1.png"); }
+  }
+
+  &--docked-bottom { margin-top: 8px; }
+  &--docked-bottom &__handle { top: -8px; }
+  &--docked-bottom &__handle-btn {
+    &::before { background-image: url("../images/arrow-bottom.png"); }
+    &:hover::before { background-image: url("../images/arrow-bottom1.png"); }
+  }
 }