From search of external encyclopedias:
LGPL (Computing) [GNU Project] [Free and open-source software licenses] [Copyleft] Free-software license ...
Digital commons (Computing) [Economics of intellectual property] [Copyleft] [Computer law] Collectively shared digital goods ...
Korean Open Access License (Computing) [Intellectual property law] [Free content licenses] [Copyleft] Copyleft license based on South Korean law ...