Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

A build system for development of composable software.

Open-source live-chat, email support, omni-channel desk. An alternative to Intercom, Zendesk, Salesforce Service Cloud etc. 🔥💬

Scheduling infrastructure for absolutely everyone.

Open source API development ecosystem - https://hoppscotch.io (open-source alternative to Postman, Insomnia)

The open source Firebase alternative.