* [Second Sidebar for Firefox v2.0.1](https://github.com/aminought/firefox-second-sidebar) – Firefox userChrome.js script adding a customizable second sidebar with web panels and advanced features.

* [Sine v2.3.3](https://github.com/CosmoCreeper/Sine) – Community-driven mod and theme manager for Firefox-based browsers with a built-in marketplace and easy mod publishing.