DejaGnu - DejaGnu is a framework for testing other programs.
GlusterFS - GlusterFS is a scale-out network-attached storage file system.
Expect - Expect is a tool for automating interactive applications such as telnet, ftp, passwd, fsck, rlogin...
Apache Karaf - Apache Karaf is a lightweight, modern and polymorphic container powered by OSGi.
Check - Check is a unit testing framework for C, which runs on environments such as GNU/Linux, GNU/Hurd, BSD, and Mac OSX.
containerd - An industry-standard container runtime with an emphasis on simplicity, robustness and portability