As of May 2026, there are 88 SaaS companies in API Design Tools. They have combined revenues of $655.2M and employ 5.3K people. They have raised $873.5M and serve 738.8K customers combined.
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 10 of 26 companies ranked by annual revenue.
Mumbai, Maharashtra, India
Plotch.ai is building Agentic AI infrastructure to enable seamless tool calling. The full form tooling stack Groclake from Plotch.ai helps AI developers to create Agentic apps using rich python libraries, APIs and integrations.
United States
API7.ai is the leading infrastructure company that empowers API Management and Analysis. In 2019, API7.ai donated the fattest and most feature-rich open-source API Gateway (APISIX) to the Apache Software Foundation and supports FinTech, Insurance, Telecoms, and Banks in confidently managing API transactions.
San Diego, California, United States
Simplifying encryption for developers through APIs.
Sydney, New South Wales, Australia
FlowStep is a company that provides a platform for API design challenges and solutions.
Burnaby, British Columbia, Canada
TeejLab is an Information Technology & Services company that offers API management solutions. They provide services such as company profile and funding, valuation and investors, overview, news and competitors, and information technology and services. TeejLab has achieved a revenue of $1.1M and has a team of 13 people in 2023.
, , United States
PydanticAI is a Python framework designed to simplify the development of production-grade applications using Generative AI. It offers model-agnostic support, type-safety, structured response validation, and a novel dependency injection system. PydanticAI leverages the power of Pydantic for data validation and integrates seamlessly with various AI models, making it easier for developers to build robust AI-powered applications
Austin, Texas, United States
API2Cart is an integration platform that allows getting connected to 40+ shopping platforms and marketplaces via just one integration. It enables to connect with e-stores based on any of the supported platforms and retrieve all the necessary store data from them for further processing. API2Cart supports the integration with Magento, Shopify, WooCommerce, PrestaShop, Amazon, eBay, Etsy, etc. Speaking the language of tech, API2Cart lets you do the following: - Integrate your solution with 40+ shopping platforms and marketplaces via one API - Add stores to join the 50k+ stores successfully connected by our other clients - Avoid the need to maintain each connection separately - Escape mapping headaches About us API2Cart was founded in 2012 as one of MagneticOne products. Since January 2017, it is functioning as a separate company. API2Cart allows B2B eCommerce software solutions to get connected to 40+ shopping platforms via just one integration. It removes B2B eCommerce software vendors' need to develop and maintain separate integrations with different shopping platforms. API2Cart Academy: https://api2cart.com/academy/. What our Clients Say: An API connection to shopping carts is the best way to work with merchants. Managing all those connections is a lot of work and requires a lot of knowledge. By using API2Cart we don't need to spend the time and effort to create and maintain all these connections. Jacques van der Wilt, DataFeedWatch We have been working with you for nearly 2 years now, and your support is fantastic, one of the best I have worked with plus we have never had any security issues with you. Matt Warren, Veeqo We use API2Cart now for more than a year. Several customers of our application are successfully connected to this platform. So far we are very happy with the product and the service as well! Keep up the good work! Gerrit Valkenburg, SforSoftware
Lyon, Auvergne-Rhône-Alpes, France
Eden AI simplifies the use and deployment of AI technologies by providing a unique API connected to the best AI engines. 📲 Eden AI App: https://app.edenai.run/user/register 🤗 Eden AI Discord: https://discord.gg/kYX7Dkjuxn
- 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.
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