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The Top 1,773 Opera Open Source Projects

Categories > Web Browsers > Opera
Markdown Here ⭐ 55,530
Google Chrome, Firefox, and Thunderbird extension that lets you write email in Markdown and render it before sending.
total releases 3most recent commit 2 months ago
Octotree ⭐ 21,877
GitHub on steroids
dependent packages 1total releases 2most recent commit 5 months agonpm octotree} Downloads
Qrcodejs ⭐ 11,600
Cross-browser QRCode generator for javascript
dependent packages 136total releases 1most recent commit 4 days agonpm qrcodejs2} Downloads
Metamask Extension ⭐ 8,429
🌐 🔌 The MetaMask browser extension enables browsing Ethereum blockchain enabled websites
dependent packages 1total releases 2most recent commit 19 hours agonpm metamask-crx} Downloads
Favico.js ⭐ 8,393
Make use of your favicon with badges, images or videos
dependent packages 35total releases 4most recent commit 5 years agonpm favico.js} Downloads
Codimd ⭐ 7,997
CodiMD - Realtime collaborative markdown notes on all platforms.
most recent commit 2 days ago
Simpread ⭐ 6,031
简悦 ( SimpRead ) - 让你瞬间进入沉浸式阅读的扩展
most recent commit a month ago
Sponsorblock ⭐ 5,236
Skip YouTube video sponsors (browser extension)
most recent commit 2 days ago
Recordrtc ⭐ 5,183
RecordRTC is WebRTC JavaScript library for audio/video as well as screen activity recording. It supports Chrome, Firefox, Opera, Android, and Microsoft Edge. Platforms: Linux, Mac and Windows.
dependent packages 86total releases 82most recent commit 4 months agonpm recordrtc} Downloads
Hackbrowserdata ⭐ 4,973
Decrypt passwords/cookies/history/bookmarks from the browser. 一款可全平台运行的浏览器数据导出解密工具。
most recent commit 15 days ago
Gm_script ⭐ 4,795
我就是来分享脚本玩玩的
most recent commit 2 months ago
React Adaptive Hooks ⭐ 4,765
Deliver experiences best suited to a user's device and network constraints
dependent packages 3total releases 8most recent commit 5 months agonpm react-adaptive-hooks} Downloads
Html5demos ⭐ 4,650
Collection of hacks and demos showing capability of HTML5 apps
most recent commit 3 years ago
Opal ⭐ 4,641
Ruby ♥︎ JavaScript
dependent packages 152total releases 119most recent commit 5 days agorubygems opal} Downloads
Wpt ⭐ 3,964
Test suites for Web platform specs — including WHATWG, W3C, and others
most recent commit 19 hours ago
Chrome Remote Interface ⭐ 3,748
Chrome Debugging Protocol interface for Node.js
dependent packages 365total releases 72most recent commit 17 days agonpm chrome-remote-interface} Downloads
Smoothscroll ⭐ 3,442
Scroll Behavior polyfill
dependent packages 316total releases 15most recent commit a year agonpm smoothscroll-polyfill} Downloads
Hedgedoc ⭐ 3,099
HedgeDoc - The best platform to write and share markdown.
most recent commit 2 days ago
Extension Boilerplate ⭐ 2,994
⚡️ A template for building cross browser extensions for Chrome, Opera & Firefox.
most recent commit 5 months ago
Daydream ⭐ 2,684
A chrome extension to record your actions into a nightmare or puppeteer script
most recent commit a year ago
Webfrontendstack ⭐ 2,253
web front end stack: browsers, platforms, libraries, frameworks, tools etc.
most recent commit 4 years ago
Mediastreamrecorder ⭐ 2,079
Cross browser audio/video/screen recording. It supports Chrome, Firefox, Opera and Microsoft Edge. It even works on Android browsers. It follows latest MediaRecorder API standards and provides similar APIs.
dependent packages 20total releases 15most recent commit 4 years agonpm msr} Downloads
Awesome Bootstrap Checkbox ⭐ 2,045
✔️Font Awesome Bootstrap Checkboxes & Radios. Pure css way to make inputs look prettier
dependent packages 32total releases 10most recent commit a month agonpm awesome-bootstrap-checkbox} Downloads
Eventsource ⭐ 1,812
a polyfill for http://www.w3.org/TR/eventsource/
dependent packages 261total releases 36most recent commit 6 days agonpm event-source-polyfill} Downloads
Adguardbrowserextension ⭐ 1,687
AdGuard browser extension
most recent commit 3 days ago
Frontdesk ⭐ 1,606
Community driven list of useful things for Front End Developers
most recent commit a year ago
Otter Browser ⭐ 1,554
Otter Browser aims to recreate the best aspects of the classic Opera (12.x) UI using Qt5
most recent commit a day ago
Devtools Detect ⭐ 1,545
Detect if DevTools is open and its orientation
dependent packages 14total releases 12most recent commit 10 months agonpm devtools-detect} Downloads
Web Extension Starter ⭐ 1,476
🖥🔋Web Extension starter to build "Write Once Run on Any Browser" extension
most recent commit 2 months ago
Jquery Animate Enhanced ⭐ 1,402
Extend $.animate() to detect CSS transitions for Webkit, Mozilla, IE>=10 and Opera and convert animations automatically.
most recent commit 3 years ago
Lazyload ⭐ 1,364
💀 An ancient tiny JS and CSS loader from the days before everyone had written one. Unmaintained.
most recent commit 7 years ago
Vanilla Masker ⭐ 1,216
VanillaMasker is a pure javascript mask input
dependent packages 164total releases 3most recent commit 4 years agonpm vanilla-masker} Downloads
Wasavi ⭐ 1,122
wasavi is an extension for Chrome, Firefox, and Opera. wasavi changes a textarea element to virtual vi editor which supports almost all the vi/ex commands.
most recent commit 5 years ago
Streamuschromeextension ⭐ 1,093
A YouTube video player as a Google Chrome extension
most recent commit 6 years ago
Ghostery Extension ⭐ 1,083
Ghostery Browser Extension for Firefox, Chrome, Opera and Edge
most recent commit 4 days ago
Save As Ebook ⭐ 1,011
Save a web page/selection as an eBook (.epub format) - a Chrome/Firefox/Opera Web Extension
most recent commit 5 months ago
Qr Code Scanner ⭐ 1,002
📠 A simple, fast and useful progressive web application
most recent commit 2 years ago
Browser ⭐ 977
Useragent analysis tool.浏览器分析/浏览器检测/浏览器识别/浏览器判断工具 - 用户代理、操作系统信息
dependent packages 1total releases 6most recent commit 18 days agonpm js-browser-mumuy} Downloads
Bettertweetdeck ⭐ 969
A browser extension to improve TweetDeck with a lot of features
most recent commit a month ago
Timbre.js ⭐ 957
JavaScript library for objective sound programming
dependent packages 4total releases 23most recent commit 4 years agonpm timbre} Downloads
Crxviewer ⭐ 955
Add-on / web app to view the source code of Chrome / Firefox / Opera 15 extensions and zip files.
most recent commit 4 months ago
Croppic ⭐ 929
croppic
most recent commit 3 years ago
Awesome Webextensions ⭐ 907
A curated list of awesome resources for WebExtensions development.
most recent commit a month ago
Domready ⭐ 872
lets you know when the dom is ready
dependent packages 450total releases 34most recent commit 3 years agonpm domready} Downloads
Webdriver_manager ⭐ 864
dependent packages 232total releases 48most recent commit 9 days agopypi webdriver-manager} Downloads
User Agent Utils ⭐ 800
Utilities for processing user-agent strings. Can be used to handle http requests in real-time or to analyze log files.
dependent packages 65total releases 8most recent commit 3 years ago
Jquery.hotkeys ⭐ 783
jquery.hotkeys plugin lets you easily add and remove handlers for keyboard events anywhere in your code supporting almost any key combination. It takes one line of code to bind/unbind a hot key combination
total releases 2most recent commit 3 years ago
Profile Sync Daemon ⭐ 770
Symlinks and syncs browser profile dirs to RAM thus reducing HDD/SDD calls and speeding-up browsers.
most recent commit 2 months ago
Css Filters Polyfill ⭐ 762
This polyfill takes the official CSS filters syntax and translates it to the different equivalent techniques that the browsers know for those effects
most recent commit 4 years ago
Awesome Autoit ⭐ 721
⭐️ A curated list of awesome UDFs, example scripts, tools and useful resources for AutoIt.
most recent commit a month ago
Resize Observer ⭐ 681
Polyfills the ResizeObserver API.
dependent packages 180total releases 62most recent commit a year agonpm @juggle/resize-observer} Downloads
Idbwrapper ⭐ 669
A cross-browser wrapper for IndexedDB
dependent packages 24total releases 21most recent commit 5 months agonpm idb-wrapper} Downloads
Css Toggle Switch ⭐ 647
Accessible, CSS-only, toggle switches
dependent packages 11total releases 7most recent commit 5 years agonpm css-toggle-switch} Downloads
Adfilt ⭐ 644
The place where I, DandelionSprout, store my web filter lists for countless topics, including my Nordic adblock list. As simple as that, really.
most recent commit a day ago
Adblockfast ⭐ 630
Adblock Fast is a new, faster ad blocker for Android, iOS, Chrome, and Opera.
most recent commit 3 months ago
Vminpoly ⭐ 598
A polyfill for CSS units vw, vh & vmin and now some media queries to boot. Works in IE5.5 and Opera Mini
most recent commit 5 years ago
Explorercanvas ⭐ 592
Canvas for IE8 and older
most recent commit 2 years ago
Wymeditor ⭐ 575
Pure js cross-browser WYSIWYM editor with a focus on the clean separation of content and styling.
most recent commit 4 years ago
Web Developer ⭐ 571
A browser extension that adds various web developer tools to a browser.
most recent commit 8 months ago
Gallery By React ⭐ 551
one photo gallery project based on react.
most recent commit 7 years ago
Akihabara ⭐ 528
A game engine for making classic arcade style games using Javascript and HTML5. We're starting moving on a re-organized repo here: https://github.com/akihabara
most recent commit 10 years ago
Webextension Toolbox ⭐ 516
Small CLI toolbox for cross-browser WebExtension development
dependent packages 1total releases 37most recent commit 7 days agonpm webextension-toolbox} Downloads
Chibi ⭐ 516
A tiny JavaScript micro-library
total releases 10most recent commit 5 years ago
Stylish ⭐ 509
User styles manager for Firefox and other Mozilla software
most recent commit 3 years ago
Blockadblock ⭐ 506
Allows you to detect the extension AdBlock (and other)
dependent packages 3total releases 4most recent commit 3 years agonpm blockadblock} Downloads
Ics.js ⭐ 494
A browser firendly VCS file generator written entirely in javascript!!!!!!
most recent commit a year ago
Heliumrain ⭐ 490
HELIUM RAIN - Full sources for Helium Rain, a realistic space opera using Unreal Engine 4
most recent commit 2 years ago
Erik ⭐ 479
Erik is an headless browser based on WebKit. An headless browser allow to run functional tests, to access and manipulate webpages using javascript.
total releases 9most recent commit 4 months ago
Css3 Social Signin Buttons ⭐ 471
CSS3 Social Sign-in Buttons with icons. Small and large sizes.
most recent commit 7 years ago
Github I18n Plugin ⭐ 465
GitHub internationalization plugin GitHub汉化插件 🇨🇳 GitHub日本 語 🇯🇵
most recent commit 18 days ago
Github Wide ⭐ 456
Userstyle for making all of GitHub completely fluid.
most recent commit 3 years ago
Fofa_view ⭐ 449
FOFA Pro view 是一款FOFA Pro 资产展示浏览器插件，目前兼容 Chrome、Firefox、Opera。
most recent commit 6 months ago
Scriptsafe ⭐ 411
a browser extension to bring security and privacy to chrome, firefox, and opera
most recent commit 2 years ago
Console.log Wrapper ⭐ 407
Clear console logging for every browser
dependent packages 3total releases 5most recent commit 3 months agonpm consolelog} Downloads
Awesome Meta And Manifest ⭐ 404
⚡ Awesome collection of meta tags & manifest properties.
most recent commit 2 years ago
Adapterjs ⭐ 389
AdapterJS Javascript Polyfill and Tools for WebRTC - Skylink WebRTC
dependent packages 23total releases 21most recent commit 2 years agonpm adapterjs} Downloads
Inline Style Prefixer ⭐ 384
Autoprefixer for JavaScript style objects
dependent packages 470total releases 66most recent commit 5 months agonpm inline-style-prefixer} Downloads
Timelineextension ⭐ 370
Windows Timeline & Project Rome Web Extension
most recent commit 6 months ago
Jquery Postmessage ⭐ 356
jQuery postMessage: Cross-domain scripting goodness
most recent commit 7 years ago
Code ⭐ 352
Source code for Core HTML5 Canvas
most recent commit 7 years ago
App ⭐ 351
most recent commit 7 days ago
Domvas ⭐ 342
Domvas implements the missing piece that connects the DOM and Canvas.
most recent commit 9 years ago
Phpws ⭐ 335
PHP Web Socket server
dependent packages 20most recent commit 3 years agopackagist devristo/phpws} Downloads
Closest ⭐ 331
Return the closest element matching a selector up the DOM tree
dependent packages 181total releases 8most recent commit 3 years agonpm element-closest} Downloads
Responsive Images.js ⭐ 320
Lightweight plugin for easy responsive images replacement
most recent commit 3 years ago
Presenteer.js ⭐ 316
Flexible HTML5 Presentation Tool
most recent commit 4 years ago
Areweplayingyet ⭐ 314
html5 audio benchmarks
most recent commit 9 years ago
Openwith ⭐ 313
Open With add-on for Firefox
most recent commit a year ago
Summer ⭐ 304
Html image map editor based on javascript, html5, inline SVG (modern FF, Chrome, Opera and IE10+)
most recent commit 3 years ago
Magic Check ⭐ 304
Beautify Radio and Checkbox with pure CSS.
dependent packages 3total releases 4most recent commit 6 years agonpm magic-check} Downloads
Pico.js ⭐ 296
Audio processor for the cross-platform
dependent packages 2total releases 7most recent commit 7 years agonpm node-pico} Downloads
Opera Proxy ⭐ 295
Standalone client for proxies of Opera VPN
total releases 7most recent commit a month ago
Network.js ⭐ 293
Make accurate network measures (like Speedtest) in your browser
dependent packages 2total releases 8most recent commit 5 years agonpm network-js} Downloads
Jsjac ⭐ 293
JavaScript Jabber Client Library
most recent commit 4 years ago
996.browser ⭐ 289
屏蔽996.icu的浏览器列表
most recent commit 3 years ago
Hide Files On Github ⭐ 287
Chrome extension - Hide nonessential files from the GitHub file browser
most recent commit a year ago
The Printliminator ⭐ 278
most recent commit 6 years ago
Mue ⭐ 276
Fast, open and free-to-use new tab page for modern browsers
most recent commit 3 days ago
Cssfx ⭐ 273
CSS3 vendor prefix generator.
most recent commit 5 years ago
Rye ⭐ 269
A modern, lightweight browser library using ES5 natives
total releases 4most recent commit 5 years ago
1-100 of 1,773 projects
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Applications 📦 174
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Blockchain 📦 66
Build Tools 📦 105
Cloud Computing 📦 68
Code Quality 📦 24
Collaboration 📦 27
Command Line Interface 📦 38
Community 📦 79
Companies 📦 60
Compilers 📦 59
Computer Science 📦 73
Configuration Management 📦 37
Content Management 📦 153
Control Flow 📦 187
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Data Processing 📦 249
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Frameworks 📦 178
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Messaging 📦 96
Networking 📦 292
Operating Systems 📦 71
Operations 📦 114
Package Managers 📦 50
Programming Languages 📦 173
Runtime Environments 📦 90
Science 📦 42
Security 📦 343
Social Media 📦 23
Software Architecture 📦 65
Software Development 📦 60
Software Performance 📦 53
Software Quality 📦 115
Text Editors 📦 40
Text Processing 📦 118
User Interface 📦 291
User Interface Components 📦 440
Version Control 📦 26
Virtualization 📦 63
Web Browsers 📦 35
Web Servers 📦 23
Web User Interface 📦 167
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Php  (287,417)
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Ruby  (222,126)
C  (183,493)
Shell  (172,974)
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Golang  (160,486)
Swift  (65,800)
Rust  (59,273)
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Scripting  (4,216)
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Freecodecamp ⭐ 351,075
996.icu ⭐ 263,365
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System Design Primer ⭐ 191,492
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Cs Notes ⭐ 153,924
Ohmyzsh ⭐ 148,511
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Flutter ⭐ 143,329
Python ⭐ 141,094
Gitignore ⭐ 136,695
Awesome Python ⭐ 136,585
Linux ⭐ 135,931
Vscode ⭐ 135,067
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Javascript ⭐ 125,105
Python 100 Days ⭐ 121,533
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Electron ⭐ 102,951
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Kubernetes ⭐ 90,903
Next.js ⭐ 90,713
Node ⭐ 89,307
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Deno ⭐ 84,421
Three.js ⭐ 84,182
Angular ⭐ 83,091
Typescript ⭐ 83,014
Ant Design ⭐ 81,341
Material Ui ⭐ 80,305
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