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Para vs TrailBase: catalog facts
Para	TrailBase
Freemium Free and open source to self-host; Erudika also offers hosting that is free to start.	Free Free and open source under the Open Software License 3.0.
Self-hosted	Windows, macOS, Linux, Self-hosted
Persistence, search and caching handled in one server Multitenant, with separate storage per app	Single executable with no separate database or cache to run Built-in auth, realtime subscriptions and admin UI
Requires a JVM environment and backing services to run at scale Smaller community than mainstream backend platforms	Postgres support is still experimental Younger and less widely used than Firebase or Supabase
Self-hosted, Hosted service	Downloadable app, Self-hosted
Open source	Open source
License: Apache-2.0	License: OSL-3.0
Not stated if an account is needed	No account 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.