Logisim - Logisim is an educational tool for designing and simulating digital logic circuits.
Instabug - The top apps in the world rely on Instabug for beta testing, user engagement and crash reporting.
BOOLR - Open-source digital logic simulator
Bird Eats Bug - Saw a bug? Send an instant replay to engineers. It will come with console logs and everything. Developers will ❤️ you.
Digital Logic Design - Digital Logic Design is a Software tool for designing and simulating digital circuits.
Bugfender - Cloud logging for your apps, not only crashes matter