[DarkPlayer]

You can find a comparison of the two tools here: https://semanticdiff.com/blog/semanticdiff-vs-difftastic/

As author of SemanticDiff, I am obviously a bit biased. But Wilfred, the author of difftastic, found the analysis to be "pretty even-handed" [1], so I think it should be somewhat fair.

[1]: https://x.com/_wilfredh/status/1764424652611318146