Circuito.io - Instant code and wiring for your project

Solo - Personal kanban boards hosted on your own server

Quip - Quip is the modern productivity suite that simplifies your life and helps your team get work done faster.

Cash App - The easy way to send, spend, bank, and invest.

VoltSim - VoltSim is an interactive realtime circuit simulator. It has digital and analog components and even Integrated Circuits. It is the perfect companion to students, hobbyists, and engineers.

Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.