Lsof is a Unix-specific diagnostic tool. Its name stands for LiSt Open Files, and it does just that. It lists information about any files that are open, by processes currently running on the system.

VLC is the VideoLAN project's media player. It plays MPEG, MPEG-2, MPEG-4, DivX, MOV, WMV, QuickTime, WebM, FLAC, MP3, Ogg/Vorbis files, DVDs, VCDs, podcasts, and multimedia streams from various network sources.

Neofetch is a cross-platform and easy-to-use system information command line script that collects your Linux system information and display it on the terminal next to an image, it could be your distributions logo or any ascii art of your choice.

KNavalbattle is an implementation of the Battleship game, where two players take turns firing at the opponent's ships by guessing their coordinates.

RoundCube Webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality expected from an e-mail client, including MIME support, address book, folder manipulation and message filters.