AI Software Testing
Browserbase provides a reliable, managed browser infrastructure for AI agents, enabling web scraping, automated testing, and agent-based web interactions at scale.
Tiered plans · Free plan
202311-50San Francisco, California
API Testing Platforms
Platforms for testing API endpoints with automated test suites and assertions.
Workflow Automation
Nected is a low-code decision intelligence platform that unifies rule engines and workflow automation for backend process management and experimentation.
Tiered plans · Free plan
20221-50Gurugram, India
API Design Tools
Multi-protocol API development platform supporting REST, GraphQL, WebSocket, and gRPC with team collaboration.
Tiered plans · Free plan
20191-10Remote
API Testing Platforms
Automated API testing and monitoring service that validates web services with continuous integration support.
Free plan
20161-10Remote
AI Software Testing
Software testing platform offering API, UI, and DevOps tools for quality engineering.
Custom quote · Free trial
1987201-500Monrovia, USA
Website Uptime Monitoring
StatusCake provides uptime monitoring, page speed testing, SSL monitoring, and hosted status pages for websites and APIs.
Tiered plans · Free plan
20121-50London, United Kingdom
API Testing Platforms
Open source HTTP mock and validation server that generates realistic responses from OpenAPI specifications.
Free · Free plan
201551-200Austin, TX
API Testing Platforms
GUI client for gRPC, REST, and WebSocket APIs with scripting support and environment management.
Tiered plans · Free plan
20211-10Zurich, Switzerland
S
API Testing Platforms
Property-based API testing tool that automatically generates test cases from OpenAPI and GraphQL specifications.
Free · Free plan
20191-10Remote
API Testing Platforms
Postman is an API platform for designing, testing, documenting, and monitoring APIs with collaboration features for developer teams.
Tiered plans · Free plan
2014Solo / freelancerSan Francisco, California
API Testing Platforms
Open source tool for debugging, testing, and building with HTTP and HTTPS traffic interception.
Tiered plans · Free plan
20181-10Remote
API Testing Platforms
Human-friendly command-line HTTP client for API testing providing intuitive syntax and JSON support.
Free plan
201211-50Remote
Test Automation Frameworks
Open source API testing framework combining test automation with API mocks and performance.
Tiered plans · Free plan
20171-50Bengaluru, India
API Testing Platforms
Open source contract testing framework ensuring microservices communicate correctly by verifying API interactions between consumers and providers.
Free plan
201311-50Remote
Test Automation Frameworks
AI-based codeless test automation platform for web, mobile, API, and enterprise apps.
Free trial
2014100-250Gilbert, AZ
API Testing Platforms
Intuitive desktop API client for REST, GraphQL, and gRPC with Git-friendly storage and template variables.
Tiered plans · Free plan
20231-10Remote
Test Automation Frameworks
Lightweight framework for building mock HTTP servers in Java for integration testing of APIs.
Free · Free plan
20171-10Worldwide
API Testing Platforms
Desktop application for creating mock REST APIs with templating, response rules, and proxy mode for local development.
Tiered plans · Free plan
20171-10Remote
API Testing Platforms
Command-line tool for running HTTP requests defined in plain text with assertions for testing APIs.
Free · Free plan
202011-50Remote
API Testing Platforms
Simple mock HTTP server by Kong for testing and debugging HTTP calls from your apps.
Free · Free plan
2015501-1,000San Francisco, CA
API Testing Platforms
Playwright is an open-source end-to-end testing framework by Microsoft for testing web applications across Chromium, Firefox, and WebKit with a single API.
Free · Free plan
20201,000+Redmond, Washington
Code Security Scanning
CircleCI is a continuous integration and delivery platform that automates build, test, and deployment pipelines. It supports cloud and self-hosted environments with powerful parallelism and...
Usage-based · Free plan
20111-50San Francisco, California
Product Ops Platforms
Hoppscotch is an open-source API development platform providing a fast, lightweight alternative to Postman for testing REST, GraphQL, WebSocket, and MQTT APIs.
Per seat · Free plan
202011-50Remote
Test Automation Frameworks
Open source API testing and monitoring tool that uses YAML-defined test workflows for CI/CD integration.
Custom quote · Free plan
20221-10Remote
API Testing Platforms
Open source Kubernetes-native tool for mocking and testing APIs and microservices from OpenAPI and AsyncAPI specs.
Free · Free plan
20171-10Remote
Subscription Management
Mailjet by Sinch is an email delivery and marketing platform with collaborative editing, API sending, and real-time analytics for teams.
Tiered plans · Free plan
20101-50Paris, France
API Design Tools
Chinese-founded API design, debugging, and testing platform used globally.
Tiered plans · Free plan
202051-200Guangzhou, China
AI Software Testing
Checkly is a monitoring-as-code platform for API monitoring and end-to-end testing that integrates with CI/CD pipelines to detect issues before they affect users.
Tiered plans · Free plan
20181-50Berlin, Germany
API Testing Platforms
Open source API client that stores collections directly in your filesystem using a plain text markup language.
Tiered plans · Free plan
2022Solo / freelancerRemote
API Testing Platforms
API monitoring and performance platform delivering global testing, compliance evidence, and availability SLAs for critical APIs.
Tiered plans · Free plan
20111-50Boston, MA
API Testing Platforms
Swagger by SmartBear provides API design, documentation, testing, and governance tools built around the OpenAPI specification standard for API-first development.
Free plan
2011Solo / freelancerRemote
API Design Tools
Advanced API design and testing tool for macOS with dynamic values, code generation, and team collaboration.
Free · Free plan
201211-50Paris, France
AI Software Testing
AI-powered API testing platform that automatically generates and executes API tests from real traffic with smart assertions.
Free plan
201611-50Tel Aviv, Israel
API Testing Platforms
Mock HTTP server and request inspector providing instant endpoints for testing and prototyping APIs.
Tiered plans · Free plan
20161-10Bengaluru, India
Email Deliverability Tools
Mailgun by Sinch is a transactional email API service for developers, providing email sending, receiving, validation, and deliverability optimization.
Tiered plans · Free plan
20101-50San Antonio, Texas
API Testing Platforms
Open source API testing tool by SmartBear supporting REST, SOAP, and GraphQL with assertion-based validation.
Free plan
2005501-1,000Somerville, MA
AI Software Testing
Autonomous end-to-end test automation platform using real user behavior data to generate and maintain Cypress tests that reduce QA burden.
Custom quote
201811-50Boston, MA
API Testing Platforms
Webhook payload delivery service creating unique channels for developers testing GitHub integrations.
Free plan
20181,000+San Francisco, CA
API Testing Platforms
Distributed load testing for websites and APIs.
Usage-based · Free plan
20141-10Seattle, WA
Network Monitoring
Network latency monitoring tool that tracks latency patterns and visualizes performance over time.
Free · Free plan
20011-10Remote
Supply Chain Planning
Checkmarx provides a comprehensive application security platform including software composition analysis, SAST, DAST, and API security for enterprise DevSecOps programs.
Custom quote · Free trial
2006201-1,000Paramus, New Jersey
API Testing Platforms
Perforce's enterprise cloud testing platform for web and mobile apps offering AI-driven test automation, real devices, and continuous testing.
Enterprise
2006501-1,000Minneapolis, MN
API Testing Platforms
Lightweight REST API client extension for VS Code with collections, environments, and Git-friendly storage.
Tiered plans · Free plan
20211-10Remote
API Testing Platforms
Pipedream's tool for collecting and inspecting HTTP requests from web applications during development.
Freemium
201351-200San Francisco, CA
K
A/B Testing
Open source tool combining API test-automation, mocks, performance testing, and UI automation in a single framework.
Free · Free plan
20171-10Remote
API Testing Platforms
HTTP Request & Response Service written in Python for testing HTTP clients and APIs.
Free · Free plan
20121-10Worldwide
API Testing Platforms
Browser extension and desktop app for intercepting, modifying, and mocking HTTP requests for debugging and testing.
Tiered plans · Free plan
2014Solo / freelancerBangalore, India
AI Software Testing
Cobalt provides Pentest as a Service combining a vetted community of pentesters with a SaaS platform for on-demand security testing.
Custom quote
2013201-500San Francisco, California
Headless CMS
Prismic is a headless page builder and CMS that enables marketers to build pages independently while developers maintain code quality.
Tiered plans · Free plan
20131-50Paris, France
API Testing Platforms
PostHog is an open-source, all-in-one product analytics platform offering event analytics, session replay, feature flags, A/B testing, and a customer data platform with transparent usage-bas...
$0-250+ / month
202051-200San Francisco, California
API Testing Platforms
OneSignal is a customer messaging platform specializing in push notifications, email, SMS, and in-app messaging, serving over a million developers and businesses with a generous free tier.
$0-99+ / month
2014201-500San Mateo, California
API Testing Platforms
Python-based API testing framework using YAML test definitions with pytest integration for REST and MQTT APIs.
Free
20171-10Remote