Hey 👋 I used Linx (linx.software) to build the backend for these completely free apps

https://unixtime.co.za
A REST API to convert unixtime to a datetime and vice versa

https://openapidesigner.com
A visual REST API definition designer

https://form2channel.com
A service that sends a form on your website to Google Sheets, Email, Slack or Telegram

Linx (linx.software) is a low-code application development platform that implements coding principles, but uses visual abstractions of programming concepts to build back-end applications.