All my independent projects are FOSS, usually under the MIT license. Work associated with publications can be found with their entries here.
Oak is a modern, low-level, statically-typed, translated programming language with extreme macro support, built-in packaging and building, and compile-time-modifiable language syntax. Oak's syntax modification makes it a powerful core for the construction of new programming languages.
A simple, fast GDBM for C++. This is a lightweight, header-only interface to libsqlite3-dev.
A lightweight, FOSS alternative to RStudio/Posit and .rmd. Can compile .rmd files to .md or .tex, with included running code.