Snaplet Seed vs Mockoon

Free and open source

From $100 per month (Team, billed annually, up to 5 members)

Free and MIT-licensed. Snaplet the company shut down in August 2024 and snaplet.dev no longer resolves; this is a community-held library, not a service.

Free locally and forever; the paid cloud tier adds hosted mocks and team sync. Team covers 5 members, 3 cloud-deployed mocks and 100k calls a month, with Enterprise on a quote. Work emails get a 14-day trial, others 7 days with a card.

Everything, self-hosted

The desktop app and CLI are free and open source.

Emerging

Supabase community (formerly Snaplet) · since 2021

Widely used

Mockoon · since 2017

• 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.

• Genuinely a minute from download to a working mock API.
• Dynamic templating with faker-style helpers produces realistic responses.
• Proxy mode mocks only the routes you need and passes the rest through.

• Effectively unmaintained: the last npm release (0.98.0) was July 2024 and the last commit to the default branch was August 2024, though the repo is not archived.
• PostgreSQL-centric.
• TypeScript ecosystem only.

• Desktop-first; sharing mocks across a team needs the paid cloud or a committed config file.
• HTTP only.
• Less suited to complex stateful behaviour than WireMock.

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

Front-end developers unblocking themselves while a backend is still being built.