1
Greptile
San Francisco, California, United States
AI expert on your codebase that you can query via an API
- Revenue
- $1M
- Customers
- -
- Year founded
- 2023
- Funding
- -
- Team size
- 6
- Growth
- -
Top 88 API Design Tools SaaS Companies in May 2026
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.
Filters
Sorting: Highest -> Lowest
Top API Design Tools Companies
Showing 10 of 45 companies ranked by annual revenue.
- Revenue
- $990K
- Customers
- -
- Year founded
- 2023
- Funding
- -
- Team size
- 9
- Growth
- -
3
TabbyML
San Francisco, California, United States
Tabby is an open-source, self-hosted AI coding assistant that provides developers with a powerful alternative to GitHub Copilot. It allows teams to set up their own language model-powered code completion server without relying on external databases or cloud services. Tabby is designed for ease of integration with existing development environments through an OpenAPI interface and supports consumer-grade GPUs for enhanced performance. Its features include intelligent code suggestions, auto-completion, and natural language interactions, significantly boosting productivity for software development teams.
- Revenue
- $990K
- Customers
- -
- Year founded
- 2023
- Funding
- -
- Team size
- 9
- Growth
- -
4
vSure
Surry Hills, New South Wales, Australia
vSure is Work Rights Made Easy! Offering Australian employers seamless compliance and optimised Employee Experience by: - Streamlining the initial work rights check for ALL staff; and - Automating the monitoring of temporary visas; vSure also offers software developers a modern, RESTful API for checking visas. And CRICOS instituations a means of bulk checking Study Visas to manage CoEs, track enrollments and optimise capacity.
- Revenue
- $990K
- Customers
- -
- Year founded
- 2012
- Funding
- -
- Team size
- 9
- Growth
- -
5
Inigo GraphQL
Palo Alto, California, United States
GraphQL solutions for Platform teams. Inigo is a GraphQL booster ā A GraphQL lifecycle management for any GraphQL implementation.
- Revenue
- $990K
- Customers
- -
- Year founded
- 2021
- Funding
- -
- Team size
- 9
- Growth
- -
6
KrakenD
United States
KrakenD, established in 2016, has reshaped the API Gateway market with its groundbreaking stateless, engineer-oriented solutions. Our Layer 7 API Gateway software enables companies to transition from legacy systems to modern, micro-services-oriented architectures effortlessly. Through a potent mix of simplicity, performance, and scalability, we have earned top rankings on G2, including Easiest Admin, Fastest Implementation, and Best Meets Requirements in API Management. Our commitment to open source is reflected in the donation of our core framework to the Linux Foundation, ensuring its sustainability beyond our operations. Currently, over 2 million servers worldwide run on KrakenD each month, a testament to our influence in the industry. By engineering for performance and pricing for growth, we've become the preferred API Gateway solution that not only tech teams appreciate but also financial officers endorse. To learn more about how KrakenD can propel your company's growth, visit our website today.
- Revenue
- $880K
- Customers
- -
- Year founded
- 2016
- Funding
- -
- Team size
- 8
- Growth
- -
7
Rollout
United States
Rollout is the only product where you connect your API once and then drop-in UI components to embed every integration within your app
- Revenue
- $770K
- Customers
- -
- Year founded
- -
- Funding
- -
- Team size
- 7
- Growth
- -
8
XBrain
Seoul, South Korea
Developer of a software designed to build and deploy machine learning models. The company's software easily integrates machine learning models in minutes with API and offers intuitive data cleansing and analysis, enabling developers and data scientists to use machine learning technology without requiring an in-depth knowledge.
- Revenue
- $731.7K
- Customers
- -
- Year founded
- 2014
- Funding
- -
- Team size
- 5
- Growth
- 101.74%
9
Markup Hero
Los Angeles, California, United States
File Annotation Developer API Library, File Annotation API Developer Library
- Revenue
- $699.6K
- Customers
- 10K
- Year founded
- 2019
- Funding
- -
- Team size
- 3
- Growth
- -
10
Integral Zone
Reading, England, United Kingdom
Integral Zone, a MuleSoft & Salesforce partner, is at the forefront of API integration and product innovation. Over the last 10 years, we have empowered hundreds of clients with Digital transformation. We've channeled our insights from these engagements into groundbreaking tools to enhance development lifecycles. Our offerings have enabled our customers to significantly reduce development costs. š Our Key Products: š¦ Falcon Eye: Delve into efficient code scanning for seamless operation of live MuleSoft projects. š”ļø Falcon Pulse: Vigilantly oversees API connections, ensuring uninterrupted functionality through real-time API health monitoring. š Falcon Scan: An integrated SAST tool within MuleSoft Anypoint Studio, boasting comprehensive code scans using over 180+ predefined rules and customizable options. ā” Falcon Accelerators: A design tool that facilitates the creation of MuleSoft project templates, patterns, and automated AI-driven code generation. š Dig Deeper: More details: https://falcon.integralzone.com š Free trial: https://integralzone.com/analyzer/ š Book an online demo: https://integralzone.com/book-online-demo/ š„ļø
- Revenue
- $660K
- Customers
- -
- Year founded
- 2016
- Funding
- -
- Team size
- 6
- Growth
- -
Inclusion Criteria
- 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.