I wanted a simple monitoring system that is very easy to deploy and use, and so JSON ➔ Up? was born!
A public demo is running at https://jsonup.com/.
No signup is required, a user id is generated automatically and you just have to bookmark the page to get to your account.
This was my first finished go app, and my first finished react.js app.
The only server dependency is redis so it is very easy to deploy.
I'm happy with combination of websockets + golang + redis subscriptions + reactjs to make a instant push UI.
I did not have time to complete the SMS part of the app just yet.
I will launch this as a free service soon, follow @JSON_Up on twitter for updates!