3 ms·Has an open source clone of some wildly popular commercial service ever had substantial success?by trestenhortz 6y agoHas an open source clone of some wildly popular commercial service ever had substantial success?buryat 6y agoLinuxgspr 6y agoI wouldn't say that counts as a service.DoubleMalt 6y agoGitlabrapnie 6y agoGitealuplex 6y agoSignal, Telegram Moodle Discourseccouzens 6y agoWikipedia (Encarta, Encyclopedia Britannica)