A short list of some of the features:
- Multiple windows
- Profiles, for using multiple servers without having to type the host/nick each time
- UTF-8/Cyrillic/Russian codepages supported natively
- Open Source
English version: jar, jad and source.
Russian version by An12345 (Pentik): jar, jad and source.
Wap page available at http://wap.vidarholen.net/. Motorolas can also get it OTA from www.vidarholen.net. Contributed Palm PRC here (thanks to bspit)