Reverse engineering effort of a Sanco 8003 French computer by RetrOfficina GLG Programs.
Mainly I did:
A clone of Snake for Commodore64.
I always wanted to code something for a computer of my retrocomputers collection — actually, this is the main reason I collect them, to hack and write programs.
Atmel-AVR based electronic text/image superimposition device, for analog PAL video.
Don't tell anyone, but, since it is B/W, should work for SECAM and NTSC too. 
Porting of a multiprogrammed kernel to the x86_64 SMP multiprocessor architecture. Written code for AP bootstrap, lock for critical code and TLB consistency management.
Simple and Trivial Kernel for Advanced Reduced Instruction Set Computer Machines
Currently it is an amateur and incomplete study performed on the bare bone ARMv7 of an Olinuxino A20 I had laying around. It shamefully sets the CPU up, configures stacks pointers, the GIC, a timer, handles some interrupt and debugs on the serial port.
Networked embedded system of "smart" supermarket carts: registers items, checks out, and handles the carts to customers based on battery status. Exploits contiki-ng on Launchpad CC2650 platform.
Minimal (and partial) CoAP UDP/IPv6 stack for Arduino.
A virtual private network for Empoli's Linux User Group to give Internet access via IPv6 to the headquarter and the users.
Design and implementation of a file transfer protocol, secured against eavesdropping, oracle and replay attacks;
uses a PKI and exploits libopenssl.
A home hosted server with Proxmox, for:
