Toad Edge - Windows GUI for MySQL. SQL Syntax Check. Freeware (Basic Features) & Payware (Extended Features).
MongoDB Compass - The easiest way to explore and manipulate your MongoDB data
Apache Geode - Apache Geode is a distributed, in-memory database with strong data consistency, built to support transactional applications with low latency and high concurrency needs.
Mingo.io - Mingo is a different MongoDB admin. Its is very fast, reliable, safe and intuitive. Has a modern design and lots of useful features to help you manage databases.
Apache MetaModel - Non-Native Database Management Systems
Studio 3T - The perfect match for your MongoDB team