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Firefox is a fast, reliable and private web browser from the non-profit Mozilla organization.

Contributing

To learn how to contribute to Firefox read the Firefox Contributors' Quick Reference document.

We use bugzilla.mozilla.org as our issue tracker, please file bugs there.

Resources

• Firefox Source Docs is our primary documentation repository
• Nightly development builds can be downloaded from Firefox Nightly page

If you have a question about developing Firefox, and can't find the solution
on Firefox Source Docs, you can try asking your question on Matrix at
chat.mozilla.org in the Introduction channel.