Faker vs Snaplet Seed

Free and open source

Free and open source

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

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.

Everything, self-hosted

Everything, self-hosted

Category standard

OSS community · since 2010

Emerging

Snaplet · since 2021

• 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.

• 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.

• 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.

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

Every project that needs fixtures more realistic than placeholder strings.

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