Come on, are you kidding? Gridcoin has been around since 2013. And BOINC has been around since 2002. (Gridcoin is rewarding BOINC computations). Check Coingecko developer score - Gridcoin is rated 15th, across ALL coins.
For more details, here is a nice summary:
https://steemit.com/gridcoin/@cm-steem/gridcoin-vs-iex-golem-sonm
Ah shoot! I meant gladiacoin which promises to double your Bitcoin in 90 days and looks like a pyramid ponzi scheme. So sorry about that. Will edit my comment. Last thing I want to do is spread FUD.