- Free Personal • Proprietary
- Microsoft Edge
- Google Chrome
- Opera Next
Tampermonkey is a free browser extension and the most popular userscript manager for Blink- and WebKit-based Browsers like Chrome, Opera Next and Safari.
- Free • Open Source
A Mozilla Firefox extension, Ubiquity is a collection of quick and easy natural-language-derived commands that act as mashups of web services. Allowing users to get information and relate the same to current and other webpages.
Doesn't exist anymore on "official" link. Last update reported on Wikipedia from 2012.
- Free • Proprietary
Shortwave is an extensible quick-search and shortcut bookmark.