Ask HN: Examples of nice open source software that are written as single file?

[distcs]

Are there examples nice open source software or tools that are written as single file?

These could be big or small projects but it needs to fit in a single file of source code.

Like if it is a C project, then it should be a single .c file. Or if it is Rust project then only single .rs file.

Why do I care about this? Just pure curiosity. I hope to discover some interesting projects in the answers.

[jjgreen]

Rather collectible, so people do: https://github.com/nothings/single_file_libs

[distcs]

Anyone has got a similar list for single file software tools that are not libs? Something end users can use directly?