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TrailBase vs d9: catalog facts
TrailBase	d9
Free Free and open source under the Open Software License 3.0.	Free Free and open source under the GPL-3.0 licence.
Windows, macOS, Linux, Self-hosted	Web, Self-hosted
Single executable with no separate database or cache to run Built-in auth, realtime subscriptions and admin UI	Drop-in replacement for Directus 9 with the same schema Supports PostgreSQL, MySQL, SQLite, Oracle, CockroachDB, MariaDB and MS-SQL
Postgres support is still experimental Younger and less widely used than Firebase or Supabase	Based on the older Directus 9 codebase rather than current Directus Smaller maintainer team than the original project
Downloadable app, Self-hosted	Self-hosted
Open source	Open source
License: OSL-3.0	License: GPL-3.0
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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