showterm is described as 'It's showtime in a terminal!' and is an app in the Video & Movies category. There are four alternatives to showterm for Linux, Mac, Python and BSD. The best alternative is Asciinema, which is both free and Open Source. Other great apps like showterm are terminalizer (Free, Open Source), ttygif (Free, Open Source) and ttyrec (Free, Open Source).
ttyrec is a program and/or its file format capable of recording the TTY output of a text-mode program together with timestamps and then replaying it. It is widely used for example in the NetHack community for storing game replays.