Tera is a decentralized application platform. This is akin to an operating system. Tera consists of a repository of programs and data storage integrated into the Internet. The mechanism for publishing programs and data on this platform is free from censorship. The circulatory system is the blockchain.
Bitpayer is a decentralized trading platform that lets you trade Ethereum and Ethereum-based tokens directly with other users. It is the first digital assets decentralised exchange that shares profits with all users.