You can vote for Gridcoin to be listed on Txbit here: https://txbit.io/Coin. Currently Gridcoin is in 5th place but with everyones support we could be first! You're allowed to vote once every 24 hours and the voting ends on the 8th October midnight UTC.
More information about the voting can be found here: https://medium.com/@txbit/txbit-io-community-coin-vote-round-1-ca1b23b35f87
Edit: https://www.coinex.com/vote/project?id=234
You can also vote for Gridcoin to be added to this exchange!
Gridcoin is an open source Cryptocurrency (Ticker: GRC) which securely rewards volunteer computing performed upon the Boinc Platform in a decentralized manner on top of proof of stake.
BOINC (Berkeley Open Infrastructure for Network Computing) is a distributed Internet platform and was launched beginning of 2002 and it rewards participants with credits for performed work. BOINC is an application available for multiple Operating Systems and uses the unused CPU and GPU cycles on computers to perform scientific work.