Instabug - The top apps in the world rely on Instabug for beta testing, user engagement and crash reporting.
Gotty - GoTTY is a simple command line tool that turns your CLI tools into web applications.
Bird Eats Bug - Saw a bug? Send an instant replay to engineers. It will come with console logs and everything. Developers will ❤️ you.
Pagekite - Bring your localhost servers on-line.
Sentry.io - From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.
tmate - Tmate is a instant terminal sharing based on ssh.