Mozilla Firefox Developer Edition

Developer edition of Firefox with experimental tools and a separate release channel, under the same MPL 2.0 license.

Get it

The promise

• ✓ No ads
• ✓ No purchases
• ✓ No subscriptions
• ✓ No trials
• ✓ No nagging
• ✓ No surprise bundles

Something wrong?

Reports go to a human review queue. No timeline promised — this is a small pilot, but every report gets read.