No moat. Still in business.
Software directory for those who don’t want to rebuild, own the updates, the bugs, the support.
- Assertible
Runs automated tests against your APIs and websites after each deploy and on a schedule, with alerts on failure.
Since 2016
Uptime and monitoring · Developers
- Callosum
Desktop app for designing, calling and documenting APIs that keeps an OpenAPI spec in sync, offline with no login.
Since 2024
Free trial · Developer tools · Developers
- Scalar
Turns an OpenAPI file into hosted API docs, client SDKs and an MCP server for software companies.
Developer tools · Developers
- Pitch31
Upload an OpenAPI or Postman file to get a chat agent that lets your users run your software's actions in plain language.
Since 2025
Free plan · Developer tools · Software companies
- Beeceptor
Spin up hosted mock servers from OpenAPI, SOAP, GraphQL or gRPC specs so teams can test without the real backend.
Since 2025
Free plan · Developer tools · Developers
- Octri
Generates API docs, client libraries in ten languages and an MCP server from your OpenAPI file, plus usage monitoring, for API providers.
Since 2026
Free plan · Developer tools · Developers
- InstantCLI
Builds a command line tool for your API from its docs, with binaries, install scripts and updates, so AI agents can use it.
Since 2026
Developer tools · Developers
- Routebase
Keeps API specs, mock servers, tests and published docs in step from a single spec, for software teams.
Since 2026
Free plan · Developer tools · Developers
- SpecShield
Compares your OpenAPI spec on each pull request and blocks merges that would break the services using your API.
Since 2026
Free plan · Developer tools · Developers
- Treblle
Watches live API traffic so engineering teams can see usage, catch problems and enforce API standards.
Uptime and monitoring · Developers