1. TuringlegoThe Universal Turing Machine implemented in NXC, which runs on the LEGO device we made: http://www.legoturingmachine.org
2. atermsThe ATerm library is an extremely efficient library for maximally shared terms with a fast serialized format and a garbage collector (in C).
3. non-layered-tidy-treesCode accompanying the SP&E paper "Drawing non-layered tidy trees in linear time" by Atze van der Ploeg
4. recafRecaffeinating Java ☕️ with custom semantics and extensions