Lob is building an API to connect the online and offline world. We have two products, Print and Mail and Address Verification. With the Print and Mail API, a company can send mail to people with a simple API request. Think Sendgrid but for physical …

Mux is how developers build online video. With Mux Video, developers gain access to a powerful API for video streaming--think Stripe for Video. A dev doesn't need to have strong feelings about ffmpeg settings to get started; teams can focus on build…

TalkJS lets developers build a perfect chat feature in just a few hours. We power communication in online marketplaces, community sites, trading platforms and so on. We're product driven and we care tremendously about quality. Our stack is mainly Re…

Felt is the best way to make maps on the internet. It's surprisingly hard to make a map today, and people in 15+ industries rely on them to do their jobs. Climate change and the resulting natural disasters are forcing even more people to become map-…

Ramp is building the world's first finance automation platform designed to save businesses time and money. Ramp offers 5-in-1 software that consolidates corporate cards, expense management, bill payments, accounting, and reporting into one simple an…

Sleek is a browser extension that does 1-click checkout from every store on the internet by driving your web browser just like a human would — clicking buttons and typing your info on fields on websites. We're a YC company and pride ourselves on wri…