The software is the open source project WordPress.org, which is quality software. Much to the benefit of the quality WordPress.com service that we run.

Good on you Ice Station Zebra for having a link handy to an incident from the over 6 years ago, from before Automattic was even founded, and which Matt took personal responsibility for http://ma.tt/2005/04/a-response/

Yes, Flock is being developed on and for MSWin, MacOS, and Linux. A slight majority of the developers do their work primarily on Linux. It is not "written in java". I think you have us confused with a SourceForge project. The Flock browser is directly based on Firefox.

Playing nice with other people and technologies is very important to us!