Hi Swichuk, we explored integration with Sage and unfortunately they have a very closed system and the development costs to integrate with them were beyond the scope of this project. Quickbooks (desktop and online) on the other hand have an incredible development community with lots of support. So we decided to develop with quickbooks. Internally FAVA switched form Sage to QB, we found service that translated our files and it was a fairly simple process, QB works great. Let me know if you have any other questions.