ttyrpld is a multi-OS kernel-level TTY keylogger and screenlogger with (a)synchronous replay support. It runs on Linux, Solaris, FreeBSD, NetBSD and OpenBSD.
Utilizes common unix utilities to provide a simple backup solution. Like Apple's Time Machine, sbak uses hard-links to minimize disk usage. Reduces data transfer by using compressed rsync transfers. Web interface and subscription service coming soon.