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Microsoft Edge Dev / Canary vs Firefox Developer Edition: catalog facts
Microsoft Edge Dev / Canary	Firefox Developer Edition
Free Free preview channels of Microsoft Edge.	Free Free to download and use.
Windows, macOS, Linux	Windows, macOS, Linux
Access to upcoming Edge features and DevTools before general release Separate install from stable Edge, so both can coexist	Newest developer tools before they reach stable Firefox Builds for Windows, macOS and Linux, including ARM64
Preview builds can be less stable than the regular release Not intended as a daily-driver browser for most users	Pre-release software, so it can be less stable than the regular release Not supported on Windows 8.1 and older or macOS 10.14 and older
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MPL-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.