Myriad is a fork of Zetacoin. The project was launched in 2014. Myriad claims to be “the currency for all”. This implies a more equitable distribution, there is indeed no pre-mining. All users have the same chance of getting tokens by mining them or buying them on an exchange.
Namecoin is a decentralized open-source technology focused on resistance to censorship, respect for privacy and security. The system is based on the Bitcoin blockchain and allows peer-to-peer transactions. It is actually the very first fork of Bitcoin, with the idea of offering a decentralized DNS system.