Official Source Repo for DeepOnion - Anonymous Cryptocurrency on TOR (based on the latest codebase from litecoin/bitcoin)
Cryptographic currency implementing Ouroboros PoS protocol
Bitcoin Core integration/staging tree
Monero: the secure, private, untraceable cryptocurrency
Non-Exhaustive List of Cryptocurrency Code, Wallets, Exchanges, Study Materials and other Blockchain related tools.
Beam: Scalable Confidential Cryptocurrency. A Mimblewimble implementation.