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Harlequin vs gobang: catalog facts
Harlequin	gobang
Free Free and open source, supported through GitHub Sponsors.	Free Free and open source under the MIT license.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Full SQL IDE inside the terminal, usable over SSH Adapters for DuckDB, SQLite, Postgres and more	Supports MySQL, PostgreSQL, and SQLite Keyboard-only terminal interface
Installed through Python, and newer Python versions may not be supported by all dependencies Terminal interface rather than a graphical client	The project describes gobang as being in alpha
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.