diff --git a/docs/development.md b/docs/development.md
index 977c866c..a29f99c9 100644
--- a/docs/development.md
+++ b/docs/development.md
@@ -76,7 +76,7 @@ Test coding style:
 $ npm run lint:js
 ```
 
-### Helper commmands
+### Helper commands
 
 #### `npm run watch`
 Reload the application automatically when you have saved source codes.
diff --git a/docs/release-process.md b/docs/release-process.md
index d80b2d58..99bad1d1 100644
--- a/docs/release-process.md
+++ b/docs/release-process.md
@@ -61,7 +61,7 @@ Pre-work for the current release begins at the code complete date of the previou
     - Post links to final tickets for next RC to the Desktop App channel
     - Submit PRs for hotfixes against the release branch, and review, test and merge prior to next RC
 4. Build:
-    - Push next RC to acceptance and announce in Destkop App channel with new RC link
+    - Push next RC to acceptance and announce in Desktop App channel with new RC link
 5. PM:
     - Test the new RC to verify fixes merged to the release branch work and post in Desktop App channel after testing
     - Update the meta issue with download links to the new RCs and a list of approved fixes
@@ -152,4 +152,4 @@ If a bug fix release is required, run through the following steps:
     - Post and review [Mattermost Security Updates](https://about.mattermost.com/security-updates/) for the Desktop App
     - Update Security Issues spreadsheet with issue number from posted update (e.g. v3.2.0.1)
     - Confirm the Security Researchers list on the [Responsible Disclosure Policy](https://www.mattermost.org/responsible-disclosure-policy/) is up to date
-    - Review community installers for the Desktop App and update version numbers if there are any discrepencies https://www.mattermost.org/installation/
+    - Review community installers for the Desktop App and update version numbers if there are any discrepancies https://www.mattermost.org/installation/
diff --git a/docs/setup.md b/docs/setup.md
index 463d1df7..f3d96a1a 100644
--- a/docs/setup.md
+++ b/docs/setup.md
@@ -105,7 +105,7 @@ The Mattermost desktop application offers:
 - Icon notifications from Windows Task Bar
 - Desktop notifications
 
-See the Mattermost [help documention](http://docs.mattermost.com/help/getting-started/signing-in.html) for how to use the Mattermost team site.
+See the Mattermost [help documentation](http://docs.mattermost.com/help/getting-started/signing-in.html) for how to use the Mattermost team site.
 
 
 ## Settings Page
@@ -121,7 +121,7 @@ The Settings Page is available from the **File** menu under **Settings** (Click
    - **Hide Menu Bar** (Windows, Linux)
       - This option hides the menu bar. Press "Alt" to show it.
    - **Show Icon on Menu Bar** (OS X)
-      - The icon apeears on menu bar to indicate whether there are new messages or mention.
+      - The icon appears on menu bar to indicate whether there are new messages or mention.
    - **Allow insecure contents**
       - If your team is hosted on `https://`, images with `http://` are not rendered by default.
         This option allows such images to be rendered, but please be careful for security.
@@ -180,7 +180,7 @@ Below lists menu options (shortcut keys are listed in brackets, `Ctrl` becomes `
 
 Mattermost lets users configure [desktop notifications](http://docs.mattermost.com/help/getting-started/configuring-notifications.html#desktop-notifications) to alert users to new events in a team site.
 
-For the Mattermost Windows application, these appear as ballon notifications from the task bar on Windows 7 and Windows 8.1, and as a "toast" pop-up on Windows 10.
+For the Mattermost Windows application, these appear as balloon notifications from the task bar on Windows 7 and Windows 8.1, and as a "toast" pop-up on Windows 10.
 
 
 ## Start Menu and Task Bar shortcuts (Windows)
diff --git a/src/browser/components/MainPage.jsx b/src/browser/components/MainPage.jsx
index 0d59490d..40f3a149 100644
--- a/src/browser/components/MainPage.jsx
+++ b/src/browser/components/MainPage.jsx
@@ -77,7 +77,7 @@ export default class MainPage extends React.Component {
       });
     });
 
-    // can't switch tabs sequencially for some reason...
+    // can't switch tabs sequentially for some reason...
     ipcRenderer.on('switch-tab', (event, key) => {
       this.handleSelect(key);
     });
diff --git a/src/browser/components/MattermostView.jsx b/src/browser/components/MattermostView.jsx
index 9167c3e5..ba921d0d 100644
--- a/src/browser/components/MattermostView.jsx
+++ b/src/browser/components/MattermostView.jsx
@@ -85,7 +85,7 @@ export default class MattermostView extends React.Component {
       }
     });
 
-    // Open link in browserWindow. for exmaple, attached files.
+    // Open link in browserWindow. for example, attached files.
     webview.addEventListener('new-window', (e) => {
       const currentURL = url.parse(webview.getURL());
       const destURL = url.parse(e.url);
@@ -98,7 +98,7 @@ export default class MattermostView extends React.Component {
         if (destURL.path.match(/^\/api\/v[3-4]\/public\/files\//)) {
           ipcRenderer.send('download-url', e.url);
         } else {
-          // New window should disable nodeIntergration.
+          // New window should disable nodeIntegration.
           window.open(e.url, remote.app.getName(), 'nodeIntegration=no, show=yes');
         }
       } else {
@@ -119,7 +119,7 @@ export default class MattermostView extends React.Component {
             if (this.props.onSelectSpellCheckerLocale) {
               this.props.onSelectSpellCheckerLocale(locale);
             }
-            webview.send('set-spellcheker');
+            webview.send('set-spellchecker');
           },
         });
         this.setState({isContextMenuAdded: true});
diff --git a/src/browser/webview/mattermost.js b/src/browser/webview/mattermost.js
index 25591f88..837aa96f 100644
--- a/src/browser/webview/mattermost.js
+++ b/src/browser/webview/mattermost.js
@@ -141,7 +141,7 @@ function getUnreadCount() {
       const activeChannel = document.querySelector('.active .sidebar-channel');
       const closeButton = activeChannel.getElementsByClassName('btn-close');
       if (closeButton.length === 1 && closeButton[0].getAttribute('aria-describedby') === 'remove-dm-tooltip') {
-        // If active channel is DM, all posts is treated as menion.
+        // If active channel is DM, all posts is treated as mention.
         isMentioned = true;
         break;
       } else {
@@ -192,7 +192,7 @@ function setSpellChecker() {
   resetMisspelledState();
 }
 setSpellChecker();
-ipcRenderer.on('set-spellcheker', setSpellChecker);
+ipcRenderer.on('set-spellchecker', setSpellChecker);
 
 // mattermost-webapp is SPA. So cache is not cleared due to no navigation.
 // We needed to manually clear cache to free memory in long-term-use.
diff --git a/src/main.js b/src/main.js
index 52659c54..b2e90f41 100644
--- a/src/main.js
+++ b/src/main.js
@@ -176,7 +176,7 @@ const trayImages = (() => {
   }
 })();
 
-// If there is already an instance, activate the window in the existing instace and quit this one
+// If there is already an instance, activate the window in the existing instance and quit this one
 const gotTheLock = app.requestSingleInstanceLock();
 if (!gotTheLock) {
   app.exit();
@@ -333,7 +333,7 @@ app.on('certificate-error', (event, webContents, url, error, certificate, callba
 });
 
 app.on('gpu-process-crashed', (event, killed) => {
-  console.log(`The GPU process has crached (killed = ${killed})`);
+  console.log(`The GPU process has crashed (killed = ${killed})`);
 });
 
 const loginCallbackMap = new Map();
diff --git a/test/specs/permisson_test.js b/test/specs/permisson_test.js
index ca30911a..c008ac38 100644
--- a/test/specs/permisson_test.js
+++ b/test/specs/permisson_test.js
@@ -16,7 +16,7 @@ describe('PermissionManager', function() {
     });
   });
 
-  it('should grant a permisson for an origin', function() {
+  it('should grant a permission for an origin', function() {
     const ORIGIN = 'origin';
     const PERMISSION = 'permission';
     const manager = new PermissionManager(permissionFile);
@@ -33,7 +33,7 @@ describe('PermissionManager', function() {
     manager.isGranted(ORIGIN, PERMISSION + '_another').should.be.false;
   });
 
-  it('should deny a permisson for an origin', function() {
+  it('should deny a permission for an origin', function() {
     const ORIGIN = 'origin';
     const PERMISSION = 'permission';
     const manager = new PermissionManager(permissionFile);
@@ -50,7 +50,7 @@ describe('PermissionManager', function() {
     manager.isDenied(ORIGIN, PERMISSION + '_another').should.be.false;
   });
 
-  it('should save permissons to the file', function() {
+  it('should save permissions to the file', function() {
     const ORIGIN = 'origin';
     const PERMISSION = 'permission';
     const manager = new PermissionManager(permissionFile);