Xero Connector by CarryTheOne

This app has worked very well for us. I switched to it several months ago after a lot of problems with a different one - I've had no such problems with CarryTheOne integration. There are a few scenarios that have confused it, but not only does it fail gracefully (you know it broke and can manually fix it - as opposed to hidden errors like the other app I used to use), but the support team are great at releasing enhancements to solve the problem soon after I raise it. In fact I've found them really good - I was worried when I read a few reviews saying support was poor - I've had the opposite experience. Recommended!