How well do you know dev tools?

Ruby? Simple and expressive. DigitalOcean? Great value. New Relic? Easy setup.

Can you identify which tool people use for the following reasons?

Docker Image
Self Hosted
Open Source
Enterprise Ready
Comes with rasa_core

Durable and highly available object storage service
This is it!
Realtime Client Server Framework for the JVM, supporting WebSockets and Cross-Browser Fallbacks Support
This is it!
Open source, drop-in replacement for NLP tools like wit.ai
This is it!
An open-source project providing an HTTP server, HTTP client, and javax.servlet container
This is it!