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

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