KeyRunner
The Platform to Build, Test & Secure APIs.
Transform how you design, test, and manage APIs. Collaborate easily, run tests locally, and protect sensitive data every step of the way.
No Signup or Login
Get started instantly—no need for lengthy sign-ups or logins.
VS Code Extension & Desktop Apps
Work where you're comfortable! Our VS Code extension and desktop apps integrate seamlessly with your existing workflow.
Local Storage & Execution
Keep data secure with local storage and execution, ensuring sensitive information stays on your device.
Run Unlimited Collections
Test and manage unlimited API collections, enabling effortless scaling for all your projects.
Mock Servers
Streamline development by creating mock servers for fast testing and API response simulation.
Scriptless Testing & Playground
Simplify testing with our user-friendly interface—experiment with APIs without writing any code.
Our enterprise features take it even further. Contact us!
Learn more
Specmatic
Specmatic offers a no-code, specification-driven, visual approach to API testing by leveraging API specifications to automatically execute positive and negative tests. Specmatic Studio offers broad format and protocol support across REST, SOAP, GraphQL, gRPC, WebSockets, and asynchronous messaging systems (message queues and event-driven APIs).
The platform provides a comprehensive toolkit for API development and testing, utilizing specs as the single source of truth.
Key features include:
• Contract testing across various protocols
• Service virtualization and mocking
• Workflow and resiliency testing
• Backward compatibility checks to prevent breaking changes
• Open-source testing tools for OpenAPI, MCP and SOAP
• Postman collection import for spec creation
Specmatic focuses on functional correctness, contract compliance, resiliency, and compatibility testing.
Genie assists API design, enabling interactive validation of the API spec prior to generating an MCP server.
Learn more
Autostub
AutoStub® is an essential tool to speed up API development. It can significantly reduce your build time by quickly designing, prototyping, documenting and testing APIs. AutoStub® creates a functional mock that allows developers to work with APIs before they are fully implemented.
Available as a SaaS offering, for On-Premise deployments and in a hybrid model.
Key Features
Simulate ReST and SOAP services
Input format - Swagger files for ReST, WSDL files for SOAP services
Support for GET, POST, PUT, DELETE methods in ReST
Create WSDL/Swagger 2.0 based mock services; generate dummy data for API testing
Get an endpoint URL that can be used on a third party SOAP client tool
Improves quality by facilitating functional testing
Can handle multiple test scenarios together
Learn more
ATA
ATA is an AI-powered API management platform that centralizes design, testing, governance, documentation, and lifecycle workflows into a single intelligent workspace to help teams design, build, test, maintain, and govern APIs with higher quality and collaboration. It keeps API code, design documentation, specifications, test cases, and release notes in sync, reducing manual effort and drift while supporting OpenAPI specs, mock servers for frontend progress without backend readiness, and scheduled API monitoring to detect slow responses, timeouts, or failures early. It includes a Developer Studio for design-first OpenAPI creation and version control, E2E Test Automation with AI-generated robustness and security tests, mock servers, chained API workflows, and UI automation testing, and a Documentation Portal that centralizes API docs with multi-editor support, version management, secure access control, and auto-linked live endpoints.
Learn more
