Top 50 API Management Tools Companies Under $1M Revenue (August 2026)

Palo Alto, California, United States

GraphQL solutions for Platform teams. Inigo is a GraphQL booster — A GraphQL lifecycle management for any GraphQL implementation.

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.

Beijing, China

Rightbrain is the platform for managing AI tools. Build and observe AI tools centrally, deploy anywhere via API or MCP.

United States

PixLab is the leading independent, software-as-a-service platform for Machine Vision and Media Processing APIs. We help developers implement intelligent apps with our Web & Offline SDKs. Our APIs features set, includes but not limited to, Passports & ID Cards Scanning, Content Moderation, Facial Recognition, Optical Character Recognition, and many other API endpoints.

Brooklyn, New York, United States

Wallkit is a company that provides a complete subscriptions solution, including paywall and subscriptions SaaS suite. They also offer a paywall and subscriptions plugin for WordPress. Wallkit focuses on known user management and offers an API documentation for developers. They have received funding and have a company profile on Crunchbase. Wallkit has been reviewed positively and has a case study on how VentureBeat sells subscriptions and events. They also provide insights into their company, tech stack, and competitors. Piers Fawkes is associated with Wallkit and PSFK. Additionally, Wallkit offers a guide on how to choose a paywall strategy.

United States

Catapush is a simple, reliable and scalable delivery API for mission-critical push notifications for applications. Ideal for corporation sending data-driven operational notifications including targeted e-commerce and personalized one-to-one messages. Thanks to delivery confirmation and real time status tracking of each message sent it is possible to build intelligent messaging logic in your app Catapush provides a real time dedicated in-app messaging channel always attempted first. Detailed delivery info and real time status (sent,delivered,read) about each message sent is provided via callback to backend system. The solution support text personalization with variable for massive sending and 2Way communication. SMS fallback for universal reach and additional reliability is provided too. Catapush solved the problem related to the fact that basic push doesn’t work for reliable communication running a business process from a mobile app. Companies requiring reliable & traceable communications had to develop proprietary systems e.g. Whatsapp. Catapush empowers developers and companies, who already have a mobile app and active subscriber base, to send reliable, traceable and cost effective transactional push notifications and in-app messages adding important features to basic push

Montreal, Quebec, Canada

Hookdeck is a fast and reliable event gateway for receiving, processing, and delivering asynchronous messages. It centralizes and streamlines communication between services – external providers (e.g. Shopify), internal endpoints (e.g. APIs), and any combination thereof. Configure Hookdeck platform resources and features such as event routing, filters and transformations. And let Hookdeck automatically retry failed events for painless error recovery. Our developer tooling enables teams to build, deploy, operate, and observe their event-driven applications with confidence.

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.

New York, New York, United States

Zapier for Notifications. Engagespot helps developers build multi-channel product notifications with a single API. With Engagespot, you can - * Integrate multiple notification channels such as Email, In-App, SMS, Push, WhatsApp, Slack etc to your product in minutes. * Built in template editor to manage your app's notification content across different channels. * Unified logging and monitoring to give you complete track of notification delivery and performance across different channels. * Powerful notification preference manage APIs to help your users set their notification preferences from your app. * Notification batching APIs to combine similar frequent notifications into one to avoid spamming your users. In short, Engagespot can help you build a powerful notification system similar to that of Facebook, or Instagram in your app without any effort!

Los Angeles, California, United States

Authorization and access control infrastructure for developers. Add industry-leading authorization and access control to your application in less than 20 lines of code. Warrant handles the complexity of managing authorization so engineering teams can focus on building their core products.