As of November 2026, Latka tracks 4 API design tools companies with $10M–$100M in annual revenue. They have combined revenues of $54.3M and employ 258 people.
Every company below sells API design tools to other businesses and is ranked by its most recent annual revenue. Revenue, funding, headcount and customer figures come from CEO interviews on the Latka podcast, public company filings, and Latka estimates where a company has not disclosed a number.
API Design Tools are software solutions that assist developers in creating, modifying, and managing application programming interfaces (APIs). These tools streamline the process of designing APIs by providing functionalities such as visual interface design, documentation generation, testing, and validation. Primary use cases include developing RESTful and SOAP APIs, as well as ensuring that APIs are user-friendly, secure, and well-documented to facilitate integration with other software applications. Common features of API Design Tools include template-based design, version control, simulation of API requests and responses, and analytics for monitoring API performance. Buyer personas typically include software developers, API product managers, and technical architects who seek to organize development workflows more efficiently and ensure that APIs cater effectively to the needs of both the developers and the end-users. By utilizing these tools, organizations can enhance collaboration among teams and improve the overall quality of their API offerings.
Sorting: Highest -> Lowest
Showing 4 of 4 companies ranked by annual revenue.
San Francisco, California, United States
Agave provides a unified API for data access across various construction software platforms. It operates as a Provider of API for integration of construction software.
Denver, Colorado, United States
Gravitee.io is an end-to-end solution for both synchronous and asynchronous API lifecycle management, built on an event-native API Gateway with support for REST, SOAP, Websockets, Webhooks, Kafka, MQTT, and more. Because of its breadth of capabilities and unique support for streaming data, Gravitee enables developers and business users all around the world to build, manage, and secure all their APIs in one place.
Latka tracks 4 API design tools companies with $10M–$100M in annual revenue. Together they generate $54.3M in annual revenue and employ 258 people.
useagave.com is the largest, with $15.6M in annual revenue, founded in 2021.
The average API design tools company in this list makes $13.6M a year, across 4 companies with reported revenue.
Ranked by annual revenue, the leaders are useagave.com, Oneloop, Gravitee and ReadMe.
- The product must facilitate the design and documentation of APIs. - It should support multiple API protocols and formats (e.g., REST, SOAP). - The tool must include testing capabilities to ensure API functionality and performance. - It should provide features for collaborative design among development teams. - The product must offer a visual interface for defining API endpoints and data models. - Not just a code generation tool; must also facilitate design and testing workflows.
