This tool builds C programs from source by guessing what targets should be compiled and in what order. It expects to build a single library from everything in /src, then a command from each file or directory in /cmd, and links the library into all of them. It also knows how to pack resources into a bespoke archive format and build/run tests automatically.
This tool displays the most recent line read from stdin in a small window using SDL. This has a lot of uses - I sometimes use it as a timer or a notification widget.
This program encrypts and decrypts files with a symmetric crypto system (AES-256-EAX) using bearssl's primitives for the same. It is not a replacement for gpg or age - it does not handle any of the hard problems those tools handle. All it does is encrypt and decrypt files with a given key.
This is a compiler for the esoteric language FALSE, which compiles FALSE directly into x86-64 assembly. It does no optimizations at all so the resulting code can be quite bad, but it's a pretty simple example of a straight-to-assembly compiler.
This tool builds the RSS feed and index HTML page for my blog by extracting metadata from each blog post file. It's not super exciting unless you like reading C that generates XML.
This tool parses HTML documents and allows you to run queries across
them or extract elements from them - for example, you can extract the
href value of every a element that is a web link by writing =a
?href~http a:href. See the source for more details :)
This is a web server, which supports multiple concurrent clients and CGI programs. It's also a demonstration of how to use epoll(7) on Linux, and of the common "reactor" / "event loop" pattern for network programming on Unix-like systems. No TLS support at the moment but maybe I'll add it later.
This is a line-mode tool for interactively building a graph of linked pages, like if you had a wiki with the interface of ed(1). It works pretty well - I used it for a while at work, before I switched to org-mode.
This program generates a random image filled with boxes fading from color to color, producing a neat abstract wallpaper. I used to have a cron job generate a new one of these every day. This is also a demo of how easy it is to work with PPM files.
This program reads a config file, which specifies a list of files to watch for changes and programs to run in response to changes to those files.