GNU C Library

libpthread-stubs   (Compare Project)

Mostly written in shell script

License: mit

musl   (Compare Project)

Mostly written in C

License: lgpl21_or_later, mit

XCB   (Compare Project)

Mostly written in C

License: mit

libnetpp   (Compare Project)

Mostly written in C++

License: bsd

InitNG   (Compare Project)

Mostly written in C

License: gpl3_or_later

libc11   (Compare Project)

Mostly written in C

License: Public_domain_, unlicense

DeforaOS   (Compare Project)

Mostly written in C

License: BSD-3-Clause, gpl3

CrissCross   (Compare Project)

Mostly written in C++

License: bsd

SporksIRCD   (Compare Project)

License: BSD-3-Clause, gpl, isc

MXE (M cross environment)   (Compare Project)

Mostly written in C

License: mit