APIVerve

Amazon API Gateway handles all the tasks involved in accepting and processing up to hundreds of thousands of concurrent API calls, including traffic management, authorization and access control, monitoring, and API version management.

Kong is a scalable, open source API Layer (also known as an API Gateway, or API Middleware). Kong controls layer 4 and 7 traffic and is extended through Plugins, which provide extra functionality and services beyond the core platform.

Map services to arbitrary URLs in a single, declarative YAML file. Configure routes with CORS support, circuit breakers, timeouts, and more. Replace your Kubernetes ingress controller. Route gRPC, WebSockets, or HTTP.

Today's innovative enterprises are adopting API architectures to accelerate growth. Streamline your work across hybrid and multi-cloud environments with a single place for managing all your APIs.

Tyk is a leading Open Source API Gateway and Management Platform, featuring an API gateway, analytics, developer portal and dashboard. We power billions of transactions for thousands of innovative organisations.

RapidAPI is the worlds largest API marketplace with over 10,000 APIs available. Developers can find, connect, and manage all of their API connections through a single platform. As an API Provider, you can market, manage, and monetize your API on the world’s largest API marketplace, instantly exposing it to 1 million developers.

3scale's API Management platform provides services and solutions, allowing you to Operate, Manage and Distribute your APIs. Trusted by 450+ API programs.

Kong is a scalable, open source API Layer (also known as an API Gateway, or API Middleware). Kong controls layer 4 and 7 traffic and is extended through Plugins, which provide extra functionality and services beyond the core platform.

ProgrammableWeb is more than a directory and community, it's programmable. Our "API for APIs" gives you a simple and structured way to access the powerful registry and repository capabilities of PW. Use your favorite language to search and retrieve APIs, mashups, and other data from our catalog. We've got samples in PHP, Java, .NET and JavaScript to get you started.

API Umbrella is a proxy that sits in front of your APIs. It can seamlessly add common functionality like api keys, rate limiting, and analytics to any API.

It provides an easy way for API/service providers to use a web UI to define service contracts for their APIs, apply these contracts across multiple APIs, and control role-based user access and API versioning.

Build a winning API platform with instant, meaningful visibility into API usage and customer adoption

Sign In and discover new APIs from our open data commons of RESTful APIs. Mashery's API management offerings include strategic consulting & developer support to help you build your business.

CloudRail is an API Integration Solution which allows you to integrate SaaS services via a unified API. Moreover it keeps your integrations up-to-date, even if a provider changes their API. Categories are eg Social, Cloud Storage, Payment..

It makes it super easy to understand what’s going on with your APIs and the apps that use them. You can add it to any API using one of our SDKs for PHP, Laravel, .NET, Node, Ruby and Python. Once you add our SDK out of the box you get: real time API monitoring and logging, error tracking, automatically generated documentation, quality scoring and analytics. Essentially you get all the tools you need to build and ship APIs with ease. Treblle isn’t built just for back-end and API developers. You can invite team members to you project and they all get the same features.

It is an open source API management platform which helps to build and manage REST APIs. It provides all tools to quickly build an API from different data sources yet it is possible to create complete customized responses.

It is a cloud-native API Gateway and Ingress Controller built on Envoy Proxy to facilitate and secure application traffic at the edge.

APISpark lets you create, host, manage and use web APIs in a flash. Using the Restlet Framework at its core, APISpark radically simplifies the web API experience, the time-­to-­market and the overall cost to get started and to scale.

It enables you to provide secure access to your backend services through a well-defined REST API that is consistent across all of your services, regardless of the service implementation. Clients consume your REST APIS to implement standalone apps for a mobile device or tablet, through apps running in a browser, or through any other type of app that can make a request to an HTTP endpoint.

One platform that lets you optimize, monetize and accelerate your digital transformation initiative. It allows businesses to become platform enablers, grow profitable partnerships and build new channels to market.

It helps you handle OAuth flows, store API keys, and refresh access tokens. Remove integration bottlenecks from your sales pipeline. Increase the activation rate per integration and directly impact product retention.

Embedded integration toolkit for SaaS applications. Use API connectors to orchestrate data with a low-code workflow builder & publish natively into your app for your users to self-serve.

Are you a non-traditional business and you're looking for a real partner that you can process your payments? We are here for you!

ApyHub: The API marketplace for developers and AI agents to discover, consume secure, compliant APIs. Simplify integration and accelerate development.

QVeris is an AI agent infrastructure for developers, designed for MCP and Skills-based agents. It provides a unified API to discover, access, and execute 10,000+ real-world tools, APIs, and data sources—enabling LLMs and AI agents to reason, retrieve data, and take real-world actions at scale.

Generate and deploy remote MCP servers in seconds from API definitions. Serve remote MCP servers with Streamable HTTP. Debug MCP Servers with realtime logs and telemetry. Optimize LLM token usage with Goja JS interceptors, and prune PII columns with JMESPath.

GonkaGate is a USD-billed gateway to Gonka Network that provides an OpenAI-compatible API. Use a prepaid USD balance, predictable cost breakdown, and familiar SDKs by changing only the base URL.

AI security gateway for Apache APISIX. 100% air-gapped, Open Source core. CPU-capable, GPU-optional. Protect LLMs from prompt injection, PII leaks, and data exfiltration. GDPR, EU AI Act, SOC2, HIPAA compliant. Your data never leaves your VPC.

It is for individuals, startups, SMEs, and large enterprises who want to save valuable time and energy when building and maintaining software products. It offers a suite of APIs including verification, web conversion, data conversion, and UK postcode APIs. These essential core building blocks make it easy to enrich the user experience, perform address checks and email validation, and scrap web content and data quickly and easily.