We looked for a tool to help debug clock domain crossing issues in our FPGA designs. We encountered vSync, a small yet dynamic and innovative company. We are genuinely impressed with the vSync toolset. In many aspects we found it to be significantly better than products offered by the larger companies, and with a significantly lower price tag. As far as customer support goes, the response time is very fast and support quality is excellent. vSync helped us to efficiently discover and debug CDC issues and thus cut down significantly on development time.