Mozilla has been a non profit for as long as I can remember, but they were never fully backed by volunteers. They managed to drag Firefox out of Netscape before that collapsed and worked on it, together with Thunderbird, but they have always paid at least a few people to do the work.
You can still work on Firefox as a volunteer, though.
Wasn’t firefox a volunteer open source project at one point?
Mozilla has been a non profit for as long as I can remember, but they were never fully backed by volunteers. They managed to drag Firefox out of Netscape before that collapsed and worked on it, together with Thunderbird, but they have always paid at least a few people to do the work.
You can still work on Firefox as a volunteer, though.