MilkDrop - 3D audio visualization plugin, compatible with WinAmp plugin API
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Amarok - The Amarok team is proud to announce the immediate availability of the result of 2 years of hard work, the beta release of Amarok 2. 9. This release is marked by improvements, corrections and polishing of nearly all Amarok features.
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
projectM - projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.