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OH
Mostly written in C
License: Internet_Systems_Consortium_License
License: BSD-3-Clause
License: bsd
License: BSD-3-Clause, gpl
Mostly written in C++
License: gpl
M
C
License: GPL2
License: apache, artistic_gpl, Beerware, bsd_2clause_ish, BSD-3-Clause, BSD-3-Clause, bsd, gpl, MirOS, mit, XFree86_Project_Licence_version_1_1, zlib_libpng
O
License: isc
Mostly written in Ruby
License: BSD-2-Clause, BSD-3-Clause
License: BSD-2-Clause
L
License: CC-BY-NC-SA-2-0, mit
License: Public_Domain
P
License: artistic, gpl