Some recent things I've worked on that I found particularly interesting:
Colossal Cave Adventure A port of the original game from Fortran IV Play it now!
Salad A passphrase generator for *nix systems that works with arbitrary wordlists
Ur-Grue A Z-Machine emulator library (coming soon)
DOSBox-X emulator Added QCOW2 disk image support to allow differencing disks
Skeleton Linux Automated scripts to build a custom linux from scratch, including both BIOS and UEFI boot, LVM2 and LUKS full disk encryption