CGMiner - ASIC and FPGA miner in c for bitcoin. Contribute to ckolivas/cgminer development by creating an account on GitHub.
Bitbounce - Charge unsolicited email senders a cryptocurrency fee
NiceHash - Bitcoin Cloud Mining
Octopus Tasks - Earn by doing micro-tasks for companies and friends.
Coinhive - Coinhive offers a JavaScript miner for the Monero Blockchain that you can embed in your website.
UserTesters.io - Earn money for testing websites, right from your couch.