GnuCash - A personal and small-business financial-accounting software, licensed under GNU/GPL and available for Linux, Windows, Mac OS X, BSD, and Solaris.
Cherry - Let employees take company perks in their own hands
Synder - AR Automation
Maxwell Health - Maxwell Health is an operating system for employee benefits that simplifies benefits, reduces costs, and improves employee health.
Xero - Xero is online accounting for your small business.
Grapevine Surveys - Grapevine is an online survey tool for employee surveys.