Opera Dragonfly
- dragonfly: Opera Dragonfly is a fully featured development and debugging tool integrated into the Opera browser.
- dragonkeeper: Dragonkeeper is a standalone proxy to support Opera Dragonfly development. Dragonkeeper translates STP (Scope Transport Protocol) to HTTP.
- dragonfly-build-tools: Tools to build Opera Dragonfly.
- dragonfly-documentation: Documentation for Opera Dragonfly.
- dragonfly-manual-test-suite: Manual test suite for Opera Dragonfly.
Test automation
- operadriver: OperaDriver is a vendor-supported WebDriver implementation that enables programmatic automation of different Opera products. It is a part of the Selenium project.
Web Standards demos
- shinydemos: Shiny Demos is a growing set of demos of the latest Open Web Standards.
- emberwind: Emberwind is an HTML port of the indie platform game Emberwind.
- Odin: Odin is a demo created to showcase what you can do with WebGL.
Browser JS
- browserjs: Browser JavaScript allows Opera Software to automatically fix incompatible web pages, out of date scripts, and pages that inadvertently block Opera.
Tools
- robohydra: RoboHydra is a testing tool for HTTP-based-API clients.
- flipcss: FlipCSS is a library to create right-to-left (RTL) CSS from left-to-right (LTR) CSS, and vice versa.
- ucss: ucss allows you to easily find unused CSS selectors and duplicate selectors, and count how many times a selector has been used.
- django-feeds: Django Feeds provides an extensive database model for RSS feeds and a fault tolerant parser.
- jsunzip: JSUnzip is a JS port of Jørgen Ibsen's tiny inflate library and some additional code for reading a zip archive.
- TextureAtlas: TextureAtlas is a script to easily generate texture atlases.
Opera Link hooks
- JavaOperaLinkClient: Java library to access the Opera Link API, compatible with Android.
- pyoperalink: Python package to access the Opera Link API.
- xmarks-importer: Simple Xmarks importer for Opera Link, using the Opera Link API.
- AndroidNotes: Sample Android application to manage notes using the Opera Link API.
- PhpOperaLink: Sample PHP Opera Link API application.
- perl5-net-operalink: Net::OperaLink, Perl interface to the Opera Link API.