I have structured this review based on real user experiences, technical analysis, and general safety considerations for downloading cursor files from such sites. Verdict in short: A massive, free library of unique animated and static cursors, but with significant safety and UX drawbacks. Use with caution and a good antivirus. What is 7themes.su? 7themes.su is a Russian-language website (though it has an English interface option) that hosts thousands of custom Windows cursor schemes. It is one of the largest remaining repositories of .ani (animated) and .cur cursor files, including many popular anime, game, and aesthetic themes.