Best Browser Extensions in 2026

Screenity

Free, private screen recording for Chrome

Stars
18,129
Forks
1,458
Last commit
13 days ago

Capture, annotate, and edit screen recordings with no limits or sign-up required. Completely private and open source.

Open Source Alternative to:

Screen Studio

LanguageTool

AI-powered grammar checker for 30+ languages

Stars
14,400
Forks
1,503
Last commit
15 hours ago

Check grammar, punctuation, and spelling errors instantly with AI-powered technology. Supports 30+ languages with browser extensions and desktop apps.

Open Source Alternative to:

Grammarly

Harper

Fast grammar checking that respects your privacy

Stars
10,345
Forks
326
Last commit
17 hours ago

Open source grammar checker that analyzes your writing quickly while keeping your data completely private and secure on your device.

Open Source Alternative to:

Grammarly

Requestly

Intercept, modify, and debug HTTP(S) requests effortlessly

Stars
6,639
Forks
638
Last commit
6 days ago

A powerful browser extension and desktop app for developers to manipulate network requests, debug APIs, and improve web app testing

Open Source Alternative to:

Postman

Linguist

Privacy-focused translation with offline capabilities

Stars
971
Forks
44
Last commit
30 days ago

Full-featured browser extension for translating web pages, text, and subtitles with offline mode, personal dictionary, and custom translator support.

Open Source Alternative to:

Google Translate

Cloudmark

Organize and access your bookmarks seamlessly in the cloud

Stars
71
Forks
7
Last commit
9 months ago

Cloud-based bookmark manager that lets you save, categorize, and access your web favorites from any device with smart organization features

Open Source Alternative to:

Pocket

Stars
Forks
Last commit

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Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Screenity

Free, private screen recording for Chrome

Stars
18,129
Forks
1,458
Last commit
13 days ago

Capture, annotate, and edit screen recordings with no limits or sign-up required. Completely private and open source.

Open Source Alternative to:

Screen Studio

LanguageTool

AI-powered grammar checker for 30+ languages

Stars
14,400
Forks
1,503
Last commit
15 hours ago

Check grammar, punctuation, and spelling errors instantly with AI-powered technology. Supports 30+ languages with browser extensions and desktop apps.

Open Source Alternative to:

Grammarly