Birdly - Birdly is an expense management and expense report solution for SMBs.
GnuCash - A personal and small-business financial-accounting software, licensed under GNU/GPL and available for Linux, Windows, Mac OS X, BSD, and Solaris.
Fly Cash - Expense tracking as easy as chatting
Synder - AR Automation
Siftery Track - Effortlessly visualize & optimize your team's software spend
Xero - Xero is online accounting for your small business.