Web browsers

Name Anti-privacy features Default search engine Code Additional features Chromium based Summary
Mozilla Firefox Telemetry and phoning home is enabled by default however it can be disabled via about:config. Firefox accounts which lets you sync all your Firefox data across all devices, this can be completely disabled via about:config. Google MPL-2.0 Tracker blocking No Its fine if you disable some stuff via about:config.
Google Chrome Telemetry, phoning home and additional spyware features are enabled by default and it can't be disabled. Google Proprietary - Yes Avoid.
Microsoft Edge Telemetry, phoning home and additional spyware features are enabled by default and it can't be disabled. Bing Proprietary - Yes Avoid.
Opera / Opera GX Telemetry, phoning home and additional spyware features are enabled by default and it can't be disabled. Owned by a Chinese consortium since 2016 (Golden Brick Capital Private Equity Fund I Limited Partnership). Had a shady past. Google Proprietary Free Opera VPN which is just one single specific server and IP always. Yes Avoid.
Brave Makes requests on startup. They did URL injection in the past to earn money via referral programs. Brave Search MPL-2.0 Tracker and ad blocking, built in Tor window Yes It's fine if you change a dozen settings.
Ice Weasel Based firefox clone. DuckDuckGo MPL-2.0 / GPL-3.0 - No This is like the rolling release version of GNU Icecat, Recommended.
Tor Browser It sends requests to torproject.org and to Mozilla when you start it, however these requests can be disabled. DuckDuckGo BSD 3-clause Your identity is hidden thanks to the Tor network. You can change the browsing mode and the safest disables JavaScript, heavily blocks cookies, disables canvas and gives you additional privacy features No Recommended.
LibreWolf It makes a few requests on startup, however these can be disabled. DuckDuckGo MPL-2.0 Disables multiple privacy concerning features and has ad block (uBlock Origin) No Recommended.
Falkon It updates the adblock list in the background on first startup, but nothing else. DuckDuckGo GPL-3.0 Ad block Yes Recommended.
qutebrowser None DuckDuckGo GPL-3.0 Ad blocking (not advanced), uses Vim keybinds Yes Recommended.
GNU Icecat ESR version firefox clone, older than stable. DuckDuckGo MPL-2.0 / GPL-3.0 It has multiple privacy addons (e.g.: LibreJS) and features. No Recommended.
Ungoogled Chromium None None, you have to set one yourself BSD 3-clause - Yes Recommended