Snaplet Seed vs Hoverfly
Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.
Entry price
Free and open source
Open sourceFree and open source
Open sourceWhat drives the bill
The metric that actually scales your invoice.
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 and open source. You pay in engineering time and CI minutes.
Free tier
Everything, self-hosted
Everything, self-hosted
Open source
MIT
Apache-2.0
Self-hostable
No-code authoring
Languages
Platforms
Fits teams
Adoption
Emerging
Supabase community (formerly Snaplet) · since 2021
Emerging
SpectoLabs · since 2016
Strengths
- 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.
- Capture mode produces a realistic simulation from live traffic with no authoring.
- Latency injection makes it useful for performance and resilience testing too.
- Small footprint — a single Go binary.
Limitations
- 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.
- Smaller community and slower development than WireMock.
- Proxy configuration in complex networks takes effort.
- Captured simulations need periodic refresh.
Best for
TypeScript teams that want each developer and CI run to start from a clean, coherent database.
Teams needing lightweight service virtualisation against real recorded traffic.
Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.