diff --git a/doc/ads_qt_marketplace_description.md b/doc/ads_qt_marketplace_description.md
index f273d7d..12bbee5 100644
--- a/doc/ads_qt_marketplace_description.md
+++ b/doc/ads_qt_marketplace_description.md
@@ -65,7 +65,7 @@ If this flag is cleared, the widget resizing is deferred until the mouse button
 
 ### Opaque and non-opaque undocking
 
-By default, opaque undocking is active. That means, as soon as you drag a dock widget or a dock area with a number of dock widgets it will be undocked and moved into a floating widget and then the floating widget will be dragged around. That means undocking will take place immediatelly. You can compare this with opaque splitter resizing. If the flag `OpaqueUndocking` is cleared, then non-opaque undocking is active. In this mode, undocking is more like a standard drag and drop operation. That means, the dragged dock widget or dock area is not undocked immediatelly. Instead, a drag preview widget is created and dragged around to indicate the future position of the dock widget or dock area. The actual dock operation is only executed when the mouse button is released. That makes it possible, to cancel an active drag operation with the escape key.
+By default, opaque undocking is active. That means, as soon as you drag a dock widget or a dock area with a number of dock widgets it will be undocked and moved into a floating widget and then the floating widget will be dragged around. That means undocking will take place immediately. You can compare this with opaque splitter resizing. If the flag `OpaqueUndocking` is cleared, then non-opaque undocking is active. In this mode, undocking is more like a standard drag and drop operation. That means, the dragged dock widget or dock area is not undocked immediately. Instead, a drag preview widget is created and dragged around to indicate the future position of the dock widget or dock area. The actual dock operation is only executed when the mouse button is released. That makes it possible, to cancel an active drag operation with the escape key.
 
 The drag preview widget can be configured by a number of global dock manager flags:
 
diff --git a/doc/user-guide.md b/doc/user-guide.md
index 176b321..a0ceb9d 100644
--- a/doc/user-guide.md
+++ b/doc/user-guide.md
@@ -481,7 +481,7 @@ Enabling this feature adds a button with a pin icon to each dock area.
 ![DockAreaHasAutoHideButton true](cfg_flag_DockAreaHasAutoHideButton.png)
 
 By clicking this button, the current dock widget (or the complete area - depending on the
-configuration flags) will be pinned to a certain border. The border is choosen
+configuration flags) will be pinned to a certain border. The border is chosen
 depending on the location of the dock area. If you click the pin button while
 holding down the **Ctrl** key, the whole dock area will be pinned to a certain
 border.
diff --git a/sip/DockContainerWidget.sip b/sip/DockContainerWidget.sip
index 83a9baf..9159452 100644
--- a/sip/DockContainerWidget.sip
+++ b/sip/DockContainerWidget.sip
@@ -9,8 +9,8 @@ namespace ads
  * Container that manages a number of dock areas with single dock widgets
  * or tabyfied dock widgets in each area.
  * Each window that support docking has a DockContainerWidget. That means
- * the main application window and all floating windows are ore contain
- * an DockContainerWidget.
+ * the main application window and all floating windows contain a
+ * DockContainerWidget.
  */
 class CDockContainerWidget : QFrame
 {
diff --git a/src/AutoHideDockContainer.cpp b/src/AutoHideDockContainer.cpp
index 4d8cac2..44af9e2 100644
--- a/src/AutoHideDockContainer.cpp
+++ b/src/AutoHideDockContainer.cpp
@@ -355,7 +355,7 @@ void CAutoHideDockContainer::addDockWidget(CDockWidget* DockWidget)
 	d->DockArea->addDockWidget(DockWidget);
 	updateSize();
 	// The dock area is not visible and will not update the size when updateSize()
-	// is called for this auto hide container. Therefore we explicitely resize
+	// is called for this auto hide container. Therefore we explicitly resize
 	// it here. As soon as it will become visible, it will get the right size
     d->DockArea->resize(size());
 }
@@ -693,8 +693,8 @@ void CAutoHideDockContainer::moveToNewSideBarLocation(SideBarLocation NewSideBar
 	auto SideBar = dockContainer()->autoHideSideBar(NewSideBarLocation);
 	SideBar->addAutoHideWidget(this, TabIndex);
 	// If we move a horizontal auto hide container to a vertical position
-	// then we resize it to the orginal dock widget size, to avoid
-	// an extremely streched dock widget after insertion
+	// then we resize it to the original dock widget size, to avoid
+	// an extremely stretched dock widget after insertion
 	if (SideBar->orientation() != OldOrientation)
 	{
 		resetToInitialDockWidgetSize();
diff --git a/src/AutoHideDockContainer.h b/src/AutoHideDockContainer.h
index fc984a7..a483e68 100644
--- a/src/AutoHideDockContainer.h
+++ b/src/AutoHideDockContainer.h
@@ -91,7 +91,7 @@ public:
 	virtual ~CAutoHideDockContainer();
 
 	/**
-	 * Get's the side tab bar
+	 * Gets the side tab bar
 	 */
 	CAutoHideSideBar* autoHideSideBar() const;
 
@@ -101,7 +101,7 @@ public:
 	CAutoHideTab* autoHideTab() const;
 
 	/**
-	 * Get's the dock widget in this dock container
+	 * Gets the dock widget in this dock container
 	 */
 	CDockWidget* dockWidget() const;
 
@@ -167,13 +167,13 @@ public:
 
 	/**
 	 * Use this instead of resize.
-	 * Depending on the sidebar location this will set the width or heigth
+	 * Depending on the sidebar location this will set the width or height
 	 * of this auto hide container.
 	 */
 	void setSize(int Size);
 
 	/**
-	 * Resets the with or hight to the initial dock widget size dependinng on
+	 * Resets the width or height to the initial dock widget size dependinng on
 	 * the orientation.
 	 * If the orientation is Qt::Horizontal, then the height is reset to
 	 * the initial size and if orientation is Qt::Vertical, then the width is
diff --git a/src/AutoHideSideBar.h b/src/AutoHideSideBar.h
index cf38bbf..a7e4835 100644
--- a/src/AutoHideSideBar.h
+++ b/src/AutoHideSideBar.h
@@ -173,7 +173,7 @@ public:
 	/**
 	 * Overrides the minimumSizeHint() function of QScrollArea
 	 * The minimumSizeHint() is bigger than the sizeHint () for the scroll
-	 * area because even if the scrollbars are invisible, the required speace
+	 * area because even if the scrollbars are invisible, the required space
 	 * is reserved in the minimumSizeHint(). This override simply returns
 	 * sizeHint();
 	 */
diff --git a/src/DockAreaTabBar.h b/src/DockAreaTabBar.h
index f93094f..1eec312 100644
--- a/src/DockAreaTabBar.h
+++ b/src/DockAreaTabBar.h
@@ -141,7 +141,7 @@ public:
 	/**
 	 * Overrides the minimumSizeHint() function of QScrollArea
 	 * The minimumSizeHint() is bigger than the sizeHint () for the scroll
-	 * area because even if the scrollbars are invisible, the required speace
+	 * area because even if the scrollbars are invisible, the required space
 	 * is reserved in the minimumSizeHint(). This override simply returns
 	 * sizeHint();
 	 */
diff --git a/src/DockAreaTitleBar.cpp b/src/DockAreaTitleBar.cpp
index 646d653..919b130 100644
--- a/src/DockAreaTitleBar.cpp
+++ b/src/DockAreaTitleBar.cpp
@@ -814,7 +814,7 @@ CTitleBarButton::CTitleBarButton(bool showInTitleBar, QWidget* parent)
 //============================================================================
 void CTitleBarButton::setVisible(bool visible)
 {
-	// 'visible' can stay 'true' if and only if this button is configured to generaly visible:
+	// 'visible' can stay 'true' if and only if this button is configured to generally visible:
 	visible = visible && this->ShowInTitleBar;
 
 	// 'visible' can stay 'true' unless: this button is configured to be invisible when it is disabled and it is currently disabled:
diff --git a/src/DockAreaWidget.cpp b/src/DockAreaWidget.cpp
index 6146c66..6a140bc 100644
--- a/src/DockAreaWidget.cpp
+++ b/src/DockAreaWidget.cpp
@@ -317,12 +317,12 @@ struct DockAreaWidgetPrivate
 	}
 
 	/**
-	 * Udpates the enable state of the close and detach button
+	 * Updates the enable state of the close and detach button
 	 */
 	void updateTitleBarButtonStates();
 
 	/**
-	 * Udpates the enable state of the close and detach button
+	 * Updates the enable state of the close and detach button
 	 */
 	void updateTitleBarButtonVisibility(bool isTopLevel);
 
@@ -1283,17 +1283,17 @@ SideBarLocation CDockAreaWidget::calculateSideTabBarArea() const
 	case BorderHorizontalLeft: SideTab = SideBarLocation::SideBarLeft; break;
 	case BorderHorizontalRight: SideTab = SideBarLocation::SideBarRight; break;
 
-	// 3. Its touching horizontal or vertical borders
+	// 3. It's touching horizontal or vertical borders
 	case BorderVertical : SideTab = SideBarLocation::SideBarBottom; break;
 	case BorderHorizontal: SideTab = SideBarLocation::SideBarRight; break;
 
-	// 4. Its in a corner
+	// 4. It's in a corner
 	case BorderTopLeft : SideTab = HorizontalOrientation ? SideBarLocation::SideBarTop : SideBarLocation::SideBarLeft; break;
 	case BorderTopRight : SideTab = HorizontalOrientation ? SideBarLocation::SideBarTop : SideBarLocation::SideBarRight; break;
 	case BorderBottomLeft : SideTab = HorizontalOrientation ? SideBarLocation::SideBarBottom : SideBarLocation::SideBarLeft; break;
 	case BorderBottomRight : SideTab = HorizontalOrientation ? SideBarLocation::SideBarBottom : SideBarLocation::SideBarRight; break;
 
-	// 5 Ists touching only one border
+	// 5. It's touching only one border
 	case BorderLeft: SideTab = SideBarLocation::SideBarLeft; break;
 	case BorderRight: SideTab = SideBarLocation::SideBarRight; break;
 	case BorderTop: SideTab = SideBarLocation::SideBarTop; break;
diff --git a/src/DockContainerWidget.cpp b/src/DockContainerWidget.cpp
index 974142f..b7f8b2f 100644
--- a/src/DockContainerWidget.cpp
+++ b/src/DockContainerWidget.cpp
@@ -250,7 +250,7 @@ public:
 	 * \param[out] CreatedWidget The widget created from parsed data or 0 if
 	 * the parsed widget was an empty splitter
 	 * \param[in] Testing If Testing is true, only the stream data is
-	 * parsed without modifiying anything.
+	 * parsed without modifying anything.
 	 */
 	bool restoreChildNodes(CDockingStateReader& Stream, QWidget*& CreatedWidget,
 		bool Testing);
diff --git a/src/DockFocusController.cpp b/src/DockFocusController.cpp
index 50928b1..a6e05cb 100644
--- a/src/DockFocusController.cpp
+++ b/src/DockFocusController.cpp
@@ -269,7 +269,7 @@ void CDockFocusController::onApplicationFocusChanged(QWidget* focusedOld, QWidge
     Q_UNUSED(focusedOld);
 
     // Ignore focus changes if we are restoring state, or if user clicked
-    // a tab wich in turn caused the focus change
+    // a tab which in turn caused the focus change
 	if (d->DockManager->isRestoringState() || d->TabPressed)
 	{
 		return;
diff --git a/src/DockManager.cpp b/src/DockManager.cpp
index 9ccaec3..2dc2fb0 100644
--- a/src/DockManager.cpp
+++ b/src/DockManager.cpp
@@ -1285,7 +1285,7 @@ void CDockManager::hideManagerAndFloatingWidgets()
 			d->HiddenFloatingWidgets.push_back( FloatingWidget );
 			FloatingWidget->hide();
 
-			// hidding floating widget automatically marked contained CDockWidgets as hidden
+			// hiding floating widget automatically marked contained CDockWidgets as hidden
 			// but they must remain marked as visible as we want them to be restored visible
 			// when CDockManager will be shown back
 			for ( auto dockWidget : VisibleWidgets )
diff --git a/src/DockManager.h b/src/DockManager.h
index 8f24bec..d24f632 100644
--- a/src/DockManager.h
+++ b/src/DockManager.h
@@ -154,7 +154,7 @@ protected:
 	virtual void showEvent(QShowEvent *event) override;
 
 	/**
-	 * Acces for the internal dock focus controller.
+	 * Access for the internal dock focus controller.
 	 * This function only returns a valid object, if the FocusHighlighting
 	 * flag is set.
 	 */
@@ -541,7 +541,7 @@ public:
 	 * The order defines how the actions are added to the view menu.
 	 * The default insertion order is MenuAlphabeticallySorted to make it
 	 * easier for users to find the menu entry for a certain dock widget.
-	 * You need to call this function befor you insert the first menu item
+	 * You need to call this function before you insert the first menu item
 	 * into the view menu.
 	 */
 	void setViewMenuInsertionOrder(eViewMenuInsertionOrder Order);
diff --git a/src/DockSplitter.h b/src/DockSplitter.h
index 1cc766c..498a507 100644
--- a/src/DockSplitter.h
+++ b/src/DockSplitter.h
@@ -39,7 +39,7 @@ struct DockSplitterPrivate;
 
 /**
  * Splitter used internally instead of QSplitter with some additional
- * fuctionality.
+ * functionality.
  */
 class ADS_EXPORT CDockSplitter : public QSplitter
 {
diff --git a/src/DockWidget.h b/src/DockWidget.h
index c181932..b27130e 100644
--- a/src/DockWidget.h
+++ b/src/DockWidget.h
@@ -246,7 +246,7 @@ public:
      * object name is required by the dock manager to properly save and restore
      * the state of the dock widget. That means, the title needs to be unique.
      * If your title is not unique or if you would like to change the title
-     * during runtime, you need to set a unique object name explicitely
+     * during runtime, you need to set a unique object name explicitly
      * by calling setObjectName() after construction.
      * Use the layoutFlags to configure the layout of the dock widget.
      */
@@ -445,7 +445,7 @@ public:
 
     /**
      * This function returns the dock widget top tool bar.
-     * If no toolbar is assigned, this function returns nullptr. To get a vaild
+     * If no toolbar is assigned, this function returns nullptr. To get a valid
      * toolbar you either need to create a default empty toolbar via
      * createDefaultToolBar() function or you need to assign your custom
      * toolbar via setToolBar().
diff --git a/src/DockWidgetTab.cpp b/src/DockWidgetTab.cpp
index 5656391..669ddf3 100644
--- a/src/DockWidgetTab.cpp
+++ b/src/DockWidgetTab.cpp
@@ -499,7 +499,7 @@ void CDockWidgetTab::mouseMoveEvent(QMouseEvent* ev)
     else if (d->DockArea->openDockWidgetsCount() > 1
      && (internal::globalPositionOf(ev) - d->GlobalDragStartMousePosition).manhattanLength() >= QApplication::startDragDistance()) // Wait a few pixels before start moving
 	{
-    	// If we start dragging the tab, we save its inital position to
+    	// If we start dragging the tab, we save its initial position to
     	// restore it later
     	if (DraggingTab != d->DragState)
     	{
diff --git a/src/DockWidgetTab.h b/src/DockWidgetTab.h
index 11d0ba5..6f3eb6e 100644
--- a/src/DockWidgetTab.h
+++ b/src/DockWidgetTab.h
@@ -173,7 +173,7 @@ public:
 
 	/**
 	 * Set an explicit icon size.
-	 * If no icon size has been set explicitely, than the tab sets the icon size
+	 * If no icon size has been set explicitly, than the tab sets the icon size
 	 * depending on the style
 	 */
 	void setIconSize(const QSize& Size);
diff --git a/src/FloatingDockContainer.cpp b/src/FloatingDockContainer.cpp
index 16c7489..aceacdd 100644
--- a/src/FloatingDockContainer.cpp
+++ b/src/FloatingDockContainer.cpp
@@ -62,7 +62,7 @@ namespace ads
 #ifdef Q_OS_WIN
 #if 0 // set to 1 if you need this function for debugging
 /**
- * Just for debuging to convert windows message identifiers to strings
+ * Just for debugging to convert windows message identifiers to strings
  */
 static const char* windowsMessageString(int MessageId)
 {
diff --git a/src/ads_globals.cpp b/src/ads_globals.cpp
index 3cb5579..dd0b33c 100644
--- a/src/ads_globals.cpp
+++ b/src/ads_globals.cpp
@@ -290,7 +290,7 @@ QString detectWindowManagerX11()
 	QString ret = xcb_get_prop_string(support_win, "_NET_WM_NAME");
 	if(ret.length() == 0)
 	{
-		ADS_PRINT("Empty WM name occured.");
+		ADS_PRINT("Empty WM name occurred.");
 		return "UNKNOWN";
 	}
 	return ret;
diff --git a/src/ads_globals.h b/src/ads_globals.h
index 53e612b..d2460f5 100644
--- a/src/ads_globals.h
+++ b/src/ads_globals.h
@@ -189,7 +189,7 @@ void xcb_update_prop(bool set, WId window, const char *type, const char *prop, c
 bool xcb_dump_props(WId window, const char *type);
 /**
  * Gets the active window manager from the X11 Server.
- * Requires a EWMH conform window manager (Allmost all common used ones are).
+ * Requires a EWMH conform window manager (Almost all common used ones are).
  * Returns "UNKNOWN" otherwise.
  */
 QString windowManager();