Codekeeper - Source code escrow for developers
Transferslot - Easily buy and sell side-projects
Opporty - Service marketplace for small businesses on the blockchain
1Kprojects - Neglected side projects for less than $1000.
trustshare - Escrow payments for marketplaces in 5 lines of code
Worth Of Web Academy - You can buy/create, develop, track and sell websites/web-based businesses using Worth Of Web.