Open source. Open possibilities.

mq-db is a Rust-based embedded database that treats Markdown as a structured, hierarchical store with interval indexing, supporting SQL and mq queries, full-text search, and write‑back editing.

Aion is a cross-platform, .NET-based SQL client for developers and DBAs. It supports PostgreSQL, SQL Server, and MySQL, offering a modern UI, query history, JSON viewing, and query plan visualization.

Dolt is a SQL database with Git-style version control: databases can be forked, cloned, branched, merged, pushed and pulled like repositories, while MySQL-compatible clients connect and version control is exposed through SQL system tables and stored procedures.

A rich MySQL terminal client featuring auto-completion, syntax highlighting, and dataframe integration.

Rainfrog is a lightweight terminal-based database tool with vim-like keybindings, query editor, and cross-platform support for PostgreSQL, MySQL, SQLite, and more.