Robinhood - Free stock trading service.

Setu - Setu’s APIs and software is used by hundreds of businesses from startups to large enterprises to reimagine onboarding, payments, deposits, lending and data empowerment for their end customers.We’re hiring across the board!

Scout Finance - Free finance app that's like having a Bloomberg in your pocket. Download:

The Brex API - Brex credit cards and business accounts help startups scale fast, and Brex’s API can make you even faster.

Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues

Stripe iOS SDK - Accept both Apple Pay and credit card payments easily on iOS