All extensions

An open-source, lightweight interface for school VLEs. Unofficial. Sleek. Student-first.

OpenWeb Transparency

Financial transparency for Tech Non-Profit & Foundations, in your web browser.

OpenWeird Terminal

A browser companion for OpenWeird.com, a weird website portal for random web discovery when you’re bored.

Open Wolken Case by Seamus Barcoe

Allows to highlight and open SR in new tab.

Operation Fortune: Ruse de guerre Theme

Operation Fortune theme brings a new look to your Chrome, Edge and Brave browser

OPERON: Smart Form Filler

Types your spreadsheet into any web form, row by row, in your own logged-in browser. Your data never leaves this computer.

OPFS Explorer

🧑‍💻 Developer Tools

管理和编辑 OPFS 文件系统的开发者工具

Ophira Mist Chapel

Soft golden mist surrounds a tranquil chapel where stained-glass windows shimmer with sacred hues. Candlelight flickers gently…

Õpimik – eKooli ühendus

Toob eKoolist kooliandmed Õpimikku. Küpsist ei loeta ega saadeta kuhugi.

OpinionRunner

Keyboard-first helper for fast navigation and actions on app.opinion.trade

OpinionSurveys

A research participation tool for opinion surveys. Collects periodic survey responses and context data to enrich research accuracy.

Opinion价格助手

在 Opinion 市场页面中自动查找对应 Polymarket 事件并展示最新价格。

opjeo: pasa tus simulacros al examen online

Pasa las respuestas de tu simulacro en papel al examen online de tu academia sin marcarlas a mano. Tú decides cuándo terminar.

OPJK - Magic

OPJK magic theme

Oppy

Add new features to your browser and personalize your browsing experience.

OPR to Warhammer Renamer

🎬 Video & Media

Converts the names of One Page Rules units to their Warhammer equivalents.

Opsense for Gmail

AI-powered email intelligence inside Gmail — draft replies, assign tasks, and follow up without leaving your inbox.

Opser for Chrome

Record your calls in Meet, Zoom or Teams, and let your Opser agents work in your browser on the sites you're signed in to.

opsu!

opsu! is an unofficial open-source client for the rhythm game osu!, written in Java using Slick2D and LWJGL (wrappers around OpenGL…

2.6

Optara

🛍️ Shopping

One wishlist for every store on the internet. Save products to boards from any site.

Optibox Browser Extension

Optibox browser extension — scrapes competitor URLs into the editor's AI chat.

optical illusion

cool optical illusion. the circles are not spinning

Optical Illusions

This is a theme that includes many home-made illusions. The monkey is... Well, the monkey is just a monkey.

3.5

OpticAmber Clematis1600 Theme

Get back to nature with the OpticAmber Clematis theme. It combines an original floral image with high contrast amber text that's…