Most “browsers” being marketed out there are based off of Google’s Chromium project. They are effectively re-skins of it (simplifying a little). Examples include Brave, Vivaldi, Opera I believe.

Firefox is completely separate and independent from this ecosystem (which is also why there’s a separate extension store for Firefox).

The third and last major (>a couple % market share) engine is WebKit, which is the basis of Apple’s Safari.

There’s tons of cool stuff out there, but it’s either niche (platform/use case), unstable to use, and/or both. Examples: Servo, Ladybird, Orion

To sum it up, if you’re a normal, average user:

• If you have exclusively Apple devices, probably try Safari (for the synchronization & battery efficiency)
• If not, Firefox!
• If you need it because of some really messed up development/compatibility issues, the last resort is Ungoogled/de-googled Chromium

While on the topic, here’s some cool browser extensions:

• uBlock Origin

• Consent-O-Matic (auto-deny cookie banners)

• StopTheMadness / StopTheMadness Pro (macOS only)

• Bitwarden or the browser extension of another, different password manager you (hopefully) already use

• YouTube-specific extensions, if you use the platform

  • SponsorBlock for YouTube (Firefox link)
  • Stop AutoPlay Next for YouTube (Firefox link)

• (optional) Privacy-heavy focus. Caution: Having these extensions may lead to some sites breaking – they are not necessary for most people.

  • Privacy Badger
  • CanvasBlocker (Firefox)
  • Cookie AutoDelete (Firefox)
  • AdNauseam advertisement & tracking blocker/obfuscator – if you use decide to use this, probably deactivate the others including uBlock Origin

• (optional) Dark Reader

Edit: fixed a link