Founder MafiaCommunity RankingsDownload as imageShare on XThe companies whose alumni made the biggest impact as founders in 2026Add a companyOpenAI1CosignStripe2CosignPayPal3CosignRamp4CosignAnduril5CosignPalantir6CosignMeta7CosignSpaceX8CosignCoinbase9CosignLyft10CosignHubSpot11CosignFlatiron Health12CosignConvex13CosignCognition14CosignScale15CosignAnthropic16CosignFigma17CosignFin18CosignRokt Aftersell19CosignPurenetX20CosignCaseNest21CosignRobinhood22CosignPlaid23CosignAirbnb24CosignGitHub25CosignReddit26CosignSlack27CosignPinterest28CosignInstacart29CosignAsana30CosignOkta31CosignBox32CosignSkype33CosignOculus VR34CosignGoogle35CosignBrex36CosignCape37Cosign