Tonic is interface for playing online chess. Free Internet Chess Server (www.freechess.org) is supported. Tonic is based on Jin's source code. It extends Jin with multiple consoles, channels manager and some other features.
Phalanx is a chess playing engine with agresive playing style. It does not have its own graphical interface, but can be used with general chess interface Xboard (Winboard) by Timm Mann. There is also a commercial version that runs as a native Fritz module and thus can be used with the Fritz graphical interface.