Differences:
Disabled Encrypted Media Extensions (EME)
Disabled Web Runtime (deprecated as of 2015)
Removed Pocket
Removed Telemetry
Removed data collection
Removed startup profiling
Allow running of all 64-Bit NPAPI plugins
Allow running of unsigned extensions
Removal of Sponsored Tiles on New Tab Page
Addition of Duplicate Tab option
Locale selector in about:preferences > General
Differences: Disabled Encrypted Media Extensions (EME) Disabled Web Runtime (deprecated as of 2015) Removed Pocket Removed Telemetry Removed data collection Removed startup profiling Allow running of all 64-Bit NPAPI plugins Allow running of unsigned extensions Removal of Sponsored Tiles on New Tab Page Addition of Duplicate Tab option Locale selector in about:preferences > General
Homepage: https://www.waterfoxproject.org/
Wiki: https://en.wikipedia.org/wiki/Waterfox
AUR: https://aur.archlinux.org/packages/waterfox-kde-bin/