*: {link: http://criu.org CRIU (Checkpoint/Restore In Userspace)} - See also {link: https://lwn.net/Articles/525675/ This LWN article}: Some kernel changes
 *: {link: https://ftg.lbl.gov/projects/CheckpointRestart/ BLCR (Berkeley Lab Checkpoint/Restart)}: requires kernal changes
 *: {link: https://ckpt.wiki.kernel.org/index.php/Main_Page c/r (Linux Checkpoint/Restart)} - No news since 2010. {link: https://lwn.net/Articles/375855/ LWN article}
+*: {link: http://cryopid.berlios.de/ CryoPID} - No news since 2005
+*: {link: http://checkpointing.org/ Checkpointing} -List of others, circa 2011
+*: {link: http://openvz.org/Main_Page OpenVZ} - Check on. May be built on CRIU
+*: {link: http://systems.cs.columbia.edu/projects/zap/ ZAP} - Circa 2008