Open Source Windows Database Engines/Servers

Duplicati is a free and open source backup client for securely storing your data. Duplicati stores encrypted, incremental, compressed backups on cloud storage services and remote file servers using AES-256 encryption, keeping your data safe and always updated. It works with most storage services, including Google Cloud and Drive, Amazon S3, Microsoft Azure and OneDrive, Dropbox, FTPOpenStack Storage (Swift), SSH (SFTP), WebDAV, Tencent Cloud Object Storage (COS), and more! Duplicati also works on all major platforms (Windows, Linux and OSX). Unlike many other backup solutions, Duplicati ensures that your data is stored securely far away and updated regularly. Incremental updates means it saves on bandwidth and storage space, with a scheduler that automatically keeps your backups up to date.

omnimysql is a command line tool for DBAs needing to issue ad-hoc queries against sharded data.

Command line tool for syncronize heterogeneous databases. Work via QT4 drivers (Drivers for SQLite, QDBC, Firebird are included. Drivers for IBase, DB2, Postgeress, Mysql may be compilled by Qt4 (4.7.0 for 0.0.4)))