OpenLegacy - API integration software
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Apache Kafka - Apache Kafka is an open-source message broker project developed by the Apache Software Foundation written in Scala.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Docker Hub - Docker Hub is a cloud-based registry service
Slack - A messaging app for teams who see through the Earth!