There are many special projects, some large, some small, undertaken by volunteers at TNMOC. Here are a few of the major current restorations.
The Harwell Dekatron aka WITCH Computer, first operated in 1951, becoming acknowledged by 1973 as the world's most durable computer, has now being restored and is now the world's oldest original working digital computer.
EDSAC, dating from the 1950s and the world's first computer designed for users, is being recreated at TNMOC.
The story of the Rebuild of Colossus Mark II by a team led by Tony Sale.