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.
Neblio (NEBL) is a project that is developing an open source enterprise blockchain solution. This solution will be a secure and distributed platform upon which businesses can develop their own applications. Neblio is joining a long list of other projects such as Ethereum's Enterprise Ethereum Alliance (EEA), Hyperledger Fabric and R3 Corda that are working on similar enterprise blockchain development networks. Check out CoinBureau for the full review of Neblio project.