I have been collaborating with Tensor for over 10 years. I use SBIS for reporting and electronic document management. They have excellent services, such as employee and contractor reconciliation. The knowledge base is convenient, the reporting forms are up-to-date, and the program interface is intuitive. Technical support operates around the clock and is very helpful. All issues are resolved quickly thanks to my personal manager, Natalia Malova. I have tried other systems, but SBIS turned out to be the best.