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TrailBase vs Para: catalog facts
TrailBase	Para
Free Free and open source under the Open Software License 3.0.	Freemium Free and open source to self-host; Erudika also offers hosting that is free to start.
Windows, macOS, Linux, Self-hosted	Self-hosted
Single executable with no separate database or cache to run Built-in auth, realtime subscriptions and admin UI	Persistence, search and caching handled in one server Multitenant, with separate storage per app
Postgres support is still experimental Younger and less widely used than Firebase or Supabase	Requires a JVM environment and backing services to run at scale Smaller community than mainstream backend platforms
Downloadable app, Self-hosted	Self-hosted, Hosted service
Open source	Open source
License: OSL-3.0	License: Apache-2.0
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.