This piece was co-written with Patrick Malatack, former GM & VP Product at Twilio and now a partner at Matrix, where he focuses on developer tools and infrastructure.A growing number of fintechs rely on stars. Not movie stars or sports stars. Thanks to the increasing popularity of open source in fintech, these are Github Stars. It’s worth understanding why this is happening and what it means for the industry. But before getting to fintech, let’s recap the open source model and the lessons from t...