Top 18 API Marketplaces SaaS Companies in May 2026

As of May 2026, there are 18 SaaS companies in API Marketplaces. They have combined revenues of $69M and employ 422 people. They have raised $277.8M and serve 58.6K customers combined.

API marketplaces are platforms that facilitate the discovery, purchasing, and management of application programming interfaces (APIs). These marketplaces serve as central hubs where developers can publish their APIs and users can access a variety of APIs to build applications, enabling seamless integrations and enhancing functionality. The primary use cases include enabling businesses to monetize their APIs, fostering collaboration between developers, and accelerating product development through the reuse of existing APIs. Typically, an API marketplace features capabilities such as searchable API catalogs, user management, documentation, and analytics to track usage and performance. It also supports various pricing models, including pay-per-use, subscriptions, or freemium options. Common user personas for API marketplaces include software developers, IT teams, product managers, and business analysts, who seek to leverage APIs to enhance application capabilities, streamline workflows, or integrate external services.