– [Regex-coach](http://weitz.de/regex-coach/) – a graphical application for Windows which can be used to experiment with (Perl-compatible) regular expressions interactively. Freeware. ## Text editors – [Lem](https://github.com/cxxxr/lem) – Common Lisp editor/IDE with high expansibility. [MIT]. Works for many languages, has a LSP client. ## Math – [Maxima](https://sourceforge.net/projects/maxima/files/) – Computer…

– Source: Hacker News
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almost 2 years ago