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.