DBeaver - DBeaver - Universal Database Manager and SQL Client.
Bashupload - Upload files from command line to share between servers
DataGrip - Tool for SQL and databases
FilePizza - Open source application used to transfer file via WebRTC and WebTorrent.
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
BlackHole File Transfer - Blockchain-based file transfer. Designed for everyday use.