multi-platform (based on java), user-friendly,  no requirements for installation and run, and more remarkably, easier than Circos.

MizBee is a multiscale synteny browser for exploring conservation relationships in comparative genomics data. Using side-by-side linked views, MizBee enables efficient data browsing across a range of scales, from the genome to the gene. The design of MizBee is grounded in perceptual principles, and includes several techniques such as edge bundling and layering to enhance visual cues about conservation relationships related to proximity, size, similarity, and orientation.