Circuito.io - Instant code and wiring for your project
Flowlingo - Get fluent in a language through content immersion
Quip - Quip is the modern productivity suite that simplifies your life and helps your team get work done faster.
Eduflow - Digital learning that actually teaches students something
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.
Padlet - Visual boards for organizing anything.