Quote:Veteran Firefox users may have fond memories of Mozilla Labs, an experimental platform for all things Firefox.

Projects like the Firefox Sync, the excellent Ubiquity or Prospector, Persona, Test Pilot, or Firefox Sharewere developed under the Mozilla Labs umbrella. Not all projects found their way into Firefox natively or were maintained after release; still, Mozilla Labs played an important part in Firefox development.

Mozilla ended support for Mozilla Labs in 2014; no new projects were released and the website was turned into an archive.

Fast forward to 2018. Mozilla relaunched Mozilla Labs, a place to "create, test, innovate, repeat". Point your browser to https://labs.mozilla.org to open the new Mozilla Labs website on the Internet. Mozilla made the decision to establish the reinstated Mozilla Labs on a new domain instead of resurrecting the now-archived copy of the old Mozilla Labs.

Full reading: https://www.ghacks.net/2018/12/28/mozilla-revives-mozilla-labs/