Mozilla Firefox Developer Edition

Mozilla · A development-focused Firefox browser with web inspection, JavaScript debugging, network analysis and responsive testing tools.

CaskBrowsersAuto-updatesApple silicon · Intel

From homebrew/cask

30-day installs451#278 in App

1-year installs9.8KLast 365 days

Latest version159.0b15 hours ago · Oct 12

Download size184MBarm64 / x86_64 · dmg

Release cadenceWeekly11 releases in 30 days

159.0b1
LatestOct 12 · Mon
OpenNavo editorialAdded to Homebrew Oct 12 22:08
Exact-version changes are unverified in the checked official sources; see the source-scope notice.
firefox@developer-edition 159.0b1

No build-isolated change list for 159.0b1 was verified in the checked official sources. Mozilla says its 159.0beta release notes are updated continuously; that rolling series page does not isolate b1 changes. The exact channel archive and macOS installer checksum confirm the build, not its changes. Series-level features are not attributed to this build. Exact publication date is unverified.
158.0b5
Oct 7 · Wed
OpenNavo editorialAdded to Homebrew Oct 7 19:12
Official tagged Firefox source changes between beta 4 and beta 5.
Source
Fixes DevTools watchedByDevTools propagation during bfcache navigation.Normalizes schemeless origins when adding logins through CPM.Ignores DOM attribute changes before the accessibility tree is ready.Avoids dispatching worker messages when the global scope is null.
158.0b4
Oct 7 · Wed
OpenNavo editorialAdded to Homebrew Oct 5 19:20
Official tagged Firefox source changes between beta 3 and beta 4.
Source
Makes checks for readable directories more conservative.Adjusts HTMLOptionsCollection handling around script blockers.Updates Firefox localization changesets.