DBeaver - DBeaver - Universal Database Manager and SQL Client.
OSRM - Utilities, Application Utilities, and Mapping APIs
DataGrip - Tool for SQL and databases
FRRouting - FRRouting (FRR) is an IP routing protocol suite for Linux and Unix platforms which
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
OpenRouteService.org - The spatial services API with plenty of features.