Open-source alternatives to Firefox

Manage browser tabs in a tree structure — Tree Style Tab, Show tabs like a tree.

↔ alternative to Chrome、Firefox

Firefox multi-account containers for privacy — Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs that preserve your privacy. Cookies are separated by container, allowing you to use the web with multiple identities or accounts simultaneously.

↔ alternative to Firefox

Browser extension for regex URL redirection — Browser extension (Firefox, Chrome, Opera, Edge) to redirect urls based on regex patterns, like a client side mod_rewrite.

↔ alternative to Chrome、Firefox、Edge