cmus is a small, fast, and powerful console music player for Linux and *BSD. It supports almost all common file formats, SHOUTcast/Icecast streaming, and multiple output plugins. cmus features multiple media library views, a playqueue, a directory browser, powerful filters, and vi-style search and keybindings. It also features gapless playback, ReplayGain, Unicode support, and customizable color schemes.
vlock is a program to lock one or more sessions on the Linux console. This is especially useful for Linux machines which have multiple users with access to the console. One user may lock his or her session(s) while still allowing other users to use the system on other virtual consoles. If desired, the entire console may be locked and virtual console switching disabled.
SASqlConsole is a unified SQL console based on SQLAlchemy. It features pretty colors, intelligent formatting of output, convenient CSV output, a consistent interface across all backends supported by SQLAlchemy, persistent readline history, and tab completion of all tables and columns and a selection of SQL keywords.
log4bash facilitates creating easy to read and easy to parse log files from your bash scripts. Developers have the ability to override pretty much all of the default behavior. If the developer chooses to let a user do so, they can pass flags to a script at run time to control some aspects of the logging output. This includes displaying the logging output to the screen in addition to the log file, and altering the logging level. There is a script included (test.log4bash.sh) that provides working code on how to use all of log4bash's features.