Dev tools · alternatives · 2026
24 alternatives to Stateful Mock API
OpenApi to Live backend in seconds - Preserving Api State
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Generate custom data & API to build apps in less than 30s
2021 · retool.com · its alternatives →
- 2
Mockoon is the easiest and quickest way to run mock REST API servers. No remote deployment, no account required, free, open source and cross-platform.
2017 · mockoon.com · its alternatives →
- 3
Progressive Web App for generating mocked data from an OpenAPI specification - Fredx87/openapi-mock-generator
2020 · github.com · its alternatives →
- 4
InterimAPI▲68Custom API endpoints with realistic fake data in seconds
2022 · interimapi.com · its alternatives →
- 5
Mock REST endpoints in seconds. Test without backend delays. Built for developers who need reliable mock data now.
2017 · mockrest.com · its alternatives →
- 6
MockAPI Dog▲122Instant mock REST & LLM APIs - free, no signup required
Feb 2026 · mockapi.dog · its alternatives →
- 7
- 8
- 9
Schema to live API in 60 seconds. No backend needed.
May 2026 · apinexis.web.app · its alternatives →
- 10
- 11MO
2019 · mockit.netlify.com · its alternatives →
- 12
Hi HN! I'm Ankit, the founder of Beeceptor, a request mocking and intercepting tool. This time, I built something new to address a pain I’ve personally felt (and heard from dozens of QA, frontend, and platform teams): making OpenAPI specs actually useful during development. API contracts just sit around as docs often. What if you could 'activate' them, instantly have a realistic, hosted mock server-with contract validation, smart test data, and early usage? So I made _Mockaroo for OpenAPI_, but with brains. It spins up a hosted mock server from your spec in one click. It: - Generates…
2025 · beeceptor.com · its alternatives →
- 13
Hey there HN! I just wrapped up an all-day documentation spree for Instant API, a JavaScript framework for easily building web APIs that implements type safety at the HTTP interface. It uses a function-as-a-service approach combined with a slightly modified JSDoc spec to automatically enforce parameter and schema validation before HTTP requests make it through to your code. You just write comments above your endpoint functions and voila, enforced type safety contracts between your API endpoints and your developers. OpenAPI specifications are generated automatically as a byproduct of simply…
2023 · github.com · its alternatives →
- 14MS
2018 · mocktastic.com · its alternatives →
- 15
- 16
Routebase▲106Design, mock, test, and document APIs from one living spec. Full test runner built in: suites, scenarios, ten auth schemes, CLI in CI. No OpenAPI needed.
Jul 2026 · routebase.dev · its alternatives →
- 17
- 18
- 19
- 20
Point it at a real API. Get a mock in three clicks.
Sep 2026 · mockbase.org · its alternatives →
- 21
A generator for OpenAPI 3. Contribute to egorsmkv/openapi3-generator development by creating an account on GitHub.
2020 · github.com · its alternatives →
- 22
Stateless API mocks in seconds, powered by tokens.
2025 · apifastmock.com · its alternatives →
- 23
- 24
Hi HN, I built the first version of Mocktail years ago. I recently came back to the project, and after a pretty substantial rebuild, v4 is now out. Mocktail is a free and open-source, self-hosted mock API server with a built-in dashboard and database, packaged as a single ~25 MB binary. You can run it locally or on your own infrastructure — no account or hosted service required. You can define endpoints and responses, generate realistic data per request, customize headers, status codes and latency, and inspect incoming requests in real time. With v4, I also added MCP support, so coding…
Aug 2026 · getmocktail.com · its alternatives →
Also compare
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →