Equitrac client for Mavericks and Yosemite is out now. They claim it was released last november but I dont think half their staff actually knew this because I had called and asked and was told 'no' until a month ago. Anyhow, you need your server updated to 5.7 but it does work now. We are stuck in a lease so will continue to use it, hopefully a new OS doesn't come out for awhile....