Apps with 'OpenAPI' feature Page 2 of 2

PSX helps to improve the API development process by providing the following features:

AI-powered VS Code extension that generates OpenAPI specs from prompts, validates and lints contracts, runs security analysis, creates mock APIs & auto-generates documentation for faster integrations.

Keeborg is a specification generator purpose-built for the age of AI coding agents. Describe your app idea in plain English, and Keeborg produces a complete 8-document specification suite that AI tools like Claude Code, Cursor, and Windsurf can immediately use to build your project.

Free browser-based OpenAPI editor from Postman. Design or import a Swagger 2.0, OpenAPI 3.0, or OpenAPI 3.1 spec (YAML or JSON) and see live documentation with inline validation as you type. No signup, no install. Part of Postman's suite of free developer tools at postman.

Stop half-done API specifications! Cherrybomb is a CLI tool that helps you avoid undefined user behaviour by validating your API specifications.

ESFA is a revenue-sharing esports web app that helps game developers easily integrate matchmaking, tournaments, and monetization. With no upfront costs, indie studios can boost player engagement and create new revenue streams.

OpenAPI Spec Documentations. Create beautiful, customizable, interactive API documentation from OpenAPI Specification.

Eliminate API integration headaches with Specmatic's no-code AI-powered API development suite. Teams ship APIs 10x faster by transforming specifications into executable contracts instantly.

Humlix shows you an easy way of generating tests for your web APIs. All you need to do is create a test request using the test request builder within Humlix and give an example of how your endpoints look and what type of data they want.

Turn API Docs Into Conversions 70% never make their first API call. Interactive playgrounds change that. Paste your spec, live playground in 5 seconds.

The apicurio studio project is a standalone, self-hostable, web-based API design studio that can be used to create new or edit existing API designs (using the OpenAPI specification).

Api client and Development Platform.

The API to turn messy spreadsheets into structured data.

The API documentation tool that creates interactive REST API documentation and developer portals in minutes. Auto-generate from OpenAPI & Swagger specs—no coding required.

Shuffle is a low-code / no-code workflow automation program primarily aimed at security automation. Features include:

Input OpenAPI. Output SDKs and Docs.

CodeRifts is a zero-config GitHub App that detects breaking changes in OpenAPI schemas on every pull request. It scores risk across 4 dimensions, enforces governance policies before merge, and translates technical changes into business impact — blast radius, cost estimate, and...

Moongate is modern Ultima Online server built from scratch in C# with AOT compilation for high performance and nostalgic gameplay experience.