Xero - Xero is online accounting for your small business.
MilkDrop - 3D audio visualization plugin, compatible with WinAmp plugin API
Wave Financial - Award-winning financial software designed for entrepreneurs.
projectM - projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL.
QuickBooks Online - QuickBooks Online is a Cloud Accounting for small business that can be used on iPad, mobile phone or computer to do invoicing, billing, run reports, or even pay employees online.
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.