Snaplet Seed vs Faker

Free and open source

Free and open source

The Seed library is open source and free; note that Snaplet wound down its hosted product, so treat this as a library rather than a service.

Free and open source. You pay in engineering time and CI minutes.

Everything, self-hosted

Everything, self-hosted

Emerging

Snaplet · since 2021

Category standard

OSS community · since 2010

• Schema-aware generation means the data actually inserts and the app actually works.
• Deterministic seeds make failing tests reproducible.
• Good TypeScript ergonomics with Prisma and Drizzle.

• Realistic, locale-aware data catches layout bugs that 'test test test' never will.
• Seedable, so generated data is reproducible when a test fails.
• Available in every major language with a similar API.

• The company wound down its hosted business — evaluate the library's maintenance status before depending on it.
• PostgreSQL-centric.
• TypeScript ecosystem only.

• Generated data has no referential integrity or business rules — that is your job.
• Random data makes failures harder to reproduce unless you seed deliberately.
• Not a substitute for production-shaped data at realistic volume.

TypeScript teams that want each developer and CI run to start from a clean, coherent database.

Every project that needs fixtures more realistic than placeholder strings.