Browser

These are web browsers I recommend.

Firefox

Using Firefox is increasingly becoming important for the Web, as more and more giants continue to fall to the knees of Chromium. But as a user concerned about your security and privacy, you should disable Pocket and similar "cloud" features. As a Firefox user, prefer to use the upstream project (i.e., avoid Waterfox and the like). The main Firefox build is where you will find the latest features like GPU acceleration for the latest codecs.

Use Shift+Ctrl+X to flip bidi mode (RTL vs. LTR).

Userscripts

Userscripts are user-written code that augment user experience of websites.

• useascript is my personal repository of userscripts and is installable as a single script thanks to modern JavaScript
• TamperMonkey is an excellent userscript manager for Firefox. It also runs on Chrome (incidentally; it was created as a port of Greasemonkey to the Chrome Web Store).

Power Search

Firefox, possibly others have a feature where you can bind specific keys to search engine providers. This lets you for example, map = to Wolfram Alpha, yt to YouTube and so on.