Toad Edge - Windows GUI for MySQL. SQL Syntax Check. Freeware (Basic Features) & Payware (Extended Features).
LINQPad - A scratchpad for C#, F# and VB code including Linq queries.
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.
LINQ Insight - Execute LINQ Queries directly from Visual Studio without building the application. Verify your LINQ queries in a single click and view data with LINQ Insight!
InterSystems IRIS - InterSystems IRIS Data Platform sets a new level of performance for rapidly developing and deploying applications. Learn how it can help your organization.
Linqer - Linqer is a SQL to LINQ converter tool.