Top extensions

OnlyOneTab

⚡ Productivity

Ensures only one tab per domain remains open. Automatically switches to existing tab when trying to open duplicate.

OnlySQ AI

⚡ Productivity

Интеллектуальный помощник на базе OnlySQ с поддержкой чатов, анализа вкладок и зрения.

On-Page SEO

🧑‍💻 Developer Tools

Analyze page metadata, highlight links and headers, export data, and check SEO title and description length.

On-Page SEO & Alt Text Checker - Page Ready

🧑‍💻 Developer Tools

Check any page before it goes live: meta tags, headings, broken links, placeholder copy and unlabeled buttons. Runs locally.

On Purpose

🧩 More extensions

Before opening time-wasting sites, pause — breathe, pick a reason, or write your excuse. Go in on purpose, not on autopilot.

OnToplist

⚡ Productivity

Manage your OnToplist listings — view rank, status, and traffic; submit new sites with one click.

ON Video Speed Controller

🧩 More extensions

A Chrome extension to control video playback speed on web pages.

OnX

🧩 More extensions

Detects doomscrolling and locks distracting tabs until you get back on task.

Oodalicious

🧩 More extensions

Oodalicious: Caloric Monitoring Feedback Loop

OOMU Browser Bridge

🧑‍💻 Developer Tools

Connect your active ChatGPT, Claude, Gemini, and Grok browser sessions directly to your local OOMU desktop workstation.

OOO 敏感資料遮罩

🧩 More extensions

在本機遮住網頁中的姓名、出生日期、病歷號、身分證號等敏感文字。螢幕遮罩與複製貼上遮罩可分別開關。

OopsTab – Never Lose Your Tabs Again

⚡ Productivity

Auto-save, restore, and manage full browser windows.

ooTwitch — Mod Toolkit

⚡ Productivity

Boîte à outils pour les modérateurs Twitch + reporting d'activité.

OpaOma

⚡ Productivity

Legt de geopende pagina uit in gewone taal. Klik op het blauwe OpaOma-icoontje.

OpenArt

🧩 More extensions

Work with OpenArt in your browser and send references or files to new desktop work sessions.

Open Calendar Slots

⚡ Productivity

Personal scheduling without the back-and-forth. Reads your Google Calendar, finds your free slots, formats them for copy-paste.

OpenCreat Creator Workbench

🧩 More extensions

OpenCreat creator actions beside supported social profile pages.

OpenFeast

🧩 More extensions

Save any recipe from the web to your OpenFeast library.

Openfeed

🧩 More extensions

A random photograph from Openfeed in every new tab.

OpenFront Donor Calc Pro

⚡ Productivity

Troop donation calculator overlay for OpenFront.io with a HUD. | github.com/Chrome-Extensions-labs/OpenFront-donor-calculator

Open Gmail

⚡ Productivity

Click to open Gmail (or any URL) in a new or current tab. No tracking, no data access.

Open in En Croissant

⚡ Productivity

Adds a button to Chess.com that opens the current game in the En Croissant desktop app

Open in Incognito

⚡ Productivity

Adds a context menu item to open page in an incognito window.

🔒 Open in Incognito – One Click, No Setup

🧑‍💻 Developer Tools

🚀 Instantly open the current tab in Incognito mode. No setup required. Just click and go.