Open Source Browser
The browser is the most privileged program on most people's machines - it sees every site, password, and payment you type - and almost all of them are now built on one rendering engine steered by a company whose core business is advertising. The open source browsers here put that engine and its defaults back under scrutiny, stripping the telemetry and lock-in baked into the mainstream builds, so the program that mediates your entire web life can be inspected, configured, and trusted on terms other than ad revenue.
Zen Browser
Firefox-based browser focused on productivity and a calmer, distraction-free workflow
ungoogled-chromium
Chromium with Google web service dependency removed and extra privacy controls
Brave
Private web browser for desktop and mobile with built-in tracker blocking
Firefox
Private web browser from Mozilla that blocks trackers and includes a free built-in VPN
Floorp
Firefox-based browser for Windows, macOS, and Linux with customizable UI and privacy-focused browsing
Waterfox
Privacy focused web browser based on Firefox with support for classic and modern extensions
Falkon
KDE web browser built on QtWebEngine with a focus on privacy, security, and customization
GNOME Web
GNOME's opinionated web browser based on the WebKit rendering engine