DuckRails
Mock the universe!
DuckRails launched on May 7, 2016 with 165 votes, #203 of 3,824 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 10 years on.
What it does
DuckRails is an open source tool for developers to quickly & dynamically mock API endpoints.
Development tool to mock API endpoints quickly and easily - NOT MAINTAINED - iridakos/duckrails
Does a similar job
all alternatives →
DuckRails – Mock API endpoints with UI (docker image available)2019 · github.com · ▲11Development tool to mock API endpoints quickly and easily - NOT MAINTAINED - iridakos/duckrails
DuckRails – development tool for mocking API endpoints2018 · github.com · ▲6Development tool to mock API endpoints quickly and easily - NOT MAINTAINED - iridakos/duckrails
- MOMockit – Open-source app to create and configure HTTP mocked endpoints2019 · mockit.netlify.com · ▲158


Mocktail – Free, open-source mock API server with a built-in dashboardAug 2026 · getmocktail.com · ▲25Hi 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…
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