Neosync vs Snaplet Seed

From $20 per user/month (indicative, cloud)

Free and open source

Self-hosting is free; the cloud service is priced per user and record volume.

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.

Open-source self-hosted edition is free.

Everything, self-hosted

Emerging

Nucleus Cloud · since 2023

Emerging

Snaplet · since 2021

• Open source and self-hostable, so sensitive data never leaves your infrastructure.
• Preserves referential integrity across tables.
• Far cheaper than the commercial data-privacy platforms.

• 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.

• Young project with a small community.
• Fewer database connectors than the incumbents.
• Self-hosting is operational work.

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

Teams that need anonymised test data but cannot justify enterprise pricing.

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