API Development & Management brand directory

Kong Inc. develops Kong Konnect, a unified API and AI connectivity platform that enables organizations to build, run, and govern APIs, LLM traffic, event streams, and agentic AI workflows. The platform includes Kong Gateway (high-performance, open-source API gateway built on NGINX), Kong AI Gateway (semantic caching, prompt guardrails, token management, multi-LLM routing), Kong Insomnia (API design, testing, and debugging client), Kong Mesh (service mesh powered by Kuma), Kong Event Gateway (Kafka abstraction), and an Agent Gateway for MCP and A2A traffic governance. Kong Konnect provides centralized control-plane management, a developer portal, service catalog, APIOps automation, and usage-based metering and billing, deployable across cloud, hybrid, and on-premises environments.

Postman is an AI-native, end-to-end API lifecycle platform that enables developers, QA engineers, and platform teams to design, build, test, monitor, govern, and distribute APIs from a unified collaborative workspace. Core product modules include an API client (HTTP, GraphQL, gRPC, WebSocket, MQTT), Spec Hub for specification management, Collection Runner for automated testing, Mock Servers for API simulation, Monitors for scheduled performance checks, an enterprise API Catalog with gateway integrations, Flows for no-code API workflow automation, and Agent Mode for AI-powered development assistance. Postman also operates the world's largest public API network and offers an MCP Server to connect AI agents to API context.

Treblle is a federated API Intelligence and runtime observability platform that instruments REST APIs via lightweight open-source SDKs, then surfaces real-time monitoring, auto-generated documentation, security scanning, governance scoring, compliance flagging, and AI-assisted insights (Alfred) in a unified dashboard. Its Aspen product adds collaborative API testing, while an Agentic AI module addresses AI-era API management needs.

Apigee is Google Cloud's native, fully managed API management platform that provides a comprehensive proxy layer between backend services and API consumers—enabling policy-driven security, traffic control, analytics, monetization, and developer engagement across cloud, hybrid, and multicloud environments.

Speakeasy is an OpenAPI-native developer platform with two primary product lines: (1) an API Platform generating production-grade SDKs in 8+ languages, Terraform providers, CLIs, and MCP servers from OpenAPI specs—integrated into GitHub CI/CD to stay automatically up-to-date—and (2) an AI Control Plane (Gram) providing centralized access control, security enforcement (PII blocking, prompt injection prevention), and observability for AI agents and MCP servers across enterprise teams. The platform is SOC 2 Type II and ISO 27001 certified and supports self-hosting.

Stoplight Platform is a design-first API development and governance tool covering the complete pre-production API lifecycle: visual OpenAPI design, automated documentation generation, hosted mock servers, and API governance via shared style guides. It is Git-native, supports team and enterprise-scale collaboration, and is backed by three widely adopted open-source projects — Prism, Spectral, and Elements. Acquired by SmartBear in August 2023, Stoplight is now integrated into SmartBear's broader API development portfolio.

MuleSoft Anypoint Platform is an enterprise unified integration and API management platform that connects applications, data, and devices across cloud and on-premises environments. It provides tools spanning the full API lifecycle alongside automation (RPA, IDP), low-code integration (MuleSoft for Flow), and AI agent orchestration (Agent Fabric, AI Gateway). Its Anypoint Exchange marketplace offers 250+ certified connectors. As a Salesforce subsidiary, it provides deep native Salesforce ecosystem integration while supporting broad multi-vendor enterprise landscapes.

SmartBear's API product suite centers on Swagger (API Hub) for OpenAPI-standard design, collaborative documentation, contract testing, and API portal publishing; ReadyAPI for enterprise-grade functional, security, performance, and load testing of REST, SOAP, Kafka, JDBC, and JMS APIs with low-code test creation; SoapUI as the widely-adopted open-source API testing foundation; AlertSite for global synthetic API and endpoint monitoring; and Pactflow for consumer-driven contract testing. HaloAI, SmartBear's AI layer, adds automated test gap detection, AI-generated contract tests, and workflow optimization across products. The newest offering, BearQ, provides always-on autonomous QA agents for continuous application validation at AI development speed.

APILayer is a curated API marketplace and data-API provider offering a portfolio of owned, branded REST APIs across geolocation, finance, weather, aviation, data validation, and developer tooling. Developers access APIs via API keys with documentation and code samples in multiple languages, and can test endpoints live in the API playground. All APIs are manually reviewed before listing to ensure quality, uptime, and low latency.

Hoppscotch is a free, open-source API development ecosystem offering a fast, minimalist interface for testing REST, GraphQL, and real-time APIs. It runs in the browser without installation, supports offline use as a PWA, and provides cloud, desktop, and CLI clients alongside self-hosted Community and Enterprise editions for teams requiring full data sovereignty.

RapidAPI is a combined public API marketplace and enterprise API management platform. Its public hub aggregates 40,000+ third-party APIs for developer discovery, browser-based testing, and integration via a single API key. Its Enterprise Hub product allows organizations to build private, branded API catalogs for internal and partner use. RapidAPI Studio supports API design, testing, monitoring, and publishing workflows. Acquired by Nokia in 2024, the platform is being integrated into Nokia's Network as Code initiative targeting telecom and 5G API monetization.