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