DBeaver - DBeaver - Universal Database Manager and SQL Client.
HexChat - HexChat is a fork of XChat with bug fixes and new features.
DataGrip - Tool for SQL and databases
irssi - Irssi is a terminal based IRC client for UNIX systems.
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
Kiwi IRC - A hand-crafted IRC client that you can enjoy. Designed to be used easily and freely.