guu

I'm interested in seeing any languages, frameworks, and domains. Ideally these would be production applications and not tutorial apps. Here are some examples to get you thinking:

- A rails/spring/phoenix web application to learn how to structure code, handle authentication, front-end code, and common dependencies used

- A GIS application that uses an open source mapping library such as Leaflet, MapLibre, or OpenLayers and how that interacts with a frontend framework or state management library

- A Rust CLI application that demonstrates reading in parameters, error handling, and text processing

Subversion was created because the authors were frustrated with problems in CVS[0].

What's a piece of software you find essential that you wish you could replace or rewrite?

[0]: http://svnbook.red-bean.com/en/1.7/svn.intro.whatis.html#svn...