Top Free API Management Tools - Page 4

How Many API Management Tools Products Does G2 Track?

Total Products under this Category: 150

Category Stats (Sep 2026)

  • Average Rating: 4.5/5 (↑0.02 vs Aug 2026) The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Gravitee.io (+0.9%) - Among all products in this category, Gravitee.io recorded the largest rating increase compared to last month

Last updated: September 01, 2026

How Does G2 Rank API Management Tools Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 11,600+ Authentic Reviews
  • 150+ Products
  • Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

G2 Grid® for API Management Tools

G2 Grid® for API Management Tools plotting products by satisfaction and market presence

Highlighted products: Postman, Celigo, MuleSoft Anypoint Platform, Kong Konnect, Workato, Apidog, Apigee Edge, and Amazon API Gateway.

Underlying data: [Grid® JSON](https://www.g2.com/categories/api-management/grids.json?focus%5B%5D=postman&focus%5B%5D=celigo&focus%5B%5D=mulesoft-anypoint-platform&focus%5B%5D=kong-inc-kong-konnect&focus%5B%5D=workato&focus%5B%5D=apidog&focus%5B%5D=apigee-edge&focus%5B%5D=amazon-api-gateway)

API7 Enterprise

1️⃣ About API7.ai, the original creator of Apache APISIX API7.ai, founded in 2019, is an open-source infrastructure company that empowers API management and analysis. It provides a wide range of products and solutions for microservices and real-time traffic processing, such as API Gateway, Kubernetes Ingress Controller, and Service Mesh. API7.ai donated APISIX to the Apache Software Foundation in 2019. Based on Apache APISIX, API7.ai built a full API lifecycle management solution, API7 Enterprise. API7.ai is committed to providing comprehensive and efficient API design, development, portal, and monetization solutions, serving a diverse range of global clients. 2️⃣ About API7 Enterprise (Enterprise version of Apache APISIX) API7 Enterprise extends the powerful foundation of Apache APISIX with enterprise-grade capabilities, ensuring a seamless migration path from the open-source project. API7 Enterprise boasts compliance with various industry standards, including GDPR, FIPS, and SOC 2 certification. It is equipped with advanced functionalities such as RBAC, multi-environment management, audit logging, traffic labeling, and SOAP protocol conversion. It facilitates full lifecycle management through integrated API design tools and platforms, ensuring efficient development and deployment. Moreover, API7 Enterprise incorporates a built-in API portal, enabling organizations to monetize their APIs effectively. 3️⃣ About Apache APISIX (Open-Source API Gateway) Apache APISIX is a dynamic, real-time, high-performance open-source API gateway that provides rich traffic management functions such as load balancing, dynamic upstream, canary release, circuit breaking, authentication, and observability. Being built based on NGINX and LuaJIT, Apache APISIX has ultra-high performance with a single-core QPS of up to 23,000 and an average delay of only 0.2 milliseconds. As an API gateway, Apache APISIX has a wide range of application scenarios. Apache APISIX is now the most active API gateway project on GitHub, addressing 1 Trillion+ API calls per day, which is still growing. At present, it has been tested and highly recognized by worldwide enterprises and organizations such as Zoom, Airwallex, Lotus Cars, vivo, and European Factory Platform.

Average Rating: 5.0/5.0

Total Reviews: 1

Who Is the Company Behind API7 Enterprise?

  • Seller: API7.ai
  • Year Founded: 2019
  • HQ Location: Singapore, SG
  • LinkedIn® Page: www.linkedin.com
    34 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Medium

What Do G2 Reviewers Say About API7 Enterprise?

AI-generated summary from verified user reviews

Pros
  • Users value the superior performance and scalability of API7 Enterprise, ensuring flawless operation even under heavy load.
  • Users value the robust customer support of API7 Enterprise, ensuring rapid resolution of technical issues and operational efficiency.
  • Users value the flexibility for custom plugins in API7 Enterprise, enhancing the platform's adaptability to evolving business needs.
  • Users value the flexibility of API7 Enterprise, allowing for custom solutions that adapt to evolving business requirements.
  • Users appreciate the implementation ease of API7 Enterprise, thanks to its user-friendly control plane and flexibility.

What Are Recent G2 Reviews of API7 Enterprise?

Enroute

Next-Gen Kubernetes Native API Gateway built on Envoy Proxy

Average Rating: 5.0/5.0

Total Reviews: 1

How Do G2 Users Rate Enroute?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 8.9/10)
  • Scalability: 10.0/10 (Category avg: 9.0/10)
  • API Testing: 10.0/10 (Category avg: 8.8/10)
  • Orchestration: 10.0/10 (Category avg: 8.7/10)

Who Is the Company Behind Enroute?

  • Seller: Saaras
  • Year Founded: 2018
  • HQ Location: San Francisco Bay Area, US
  • LinkedIn® Page: linkedin.com
    3 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Medium

What Are Recent G2 Reviews of Enroute?

Gloo Gateway

Gloo Gateway is a fast, Kubernetes-native API gateway packed with features IT operations teams need to deliver a full lifecycle security strategy for their cloud-native environments.

Average Rating: 4.5/5.0

Total Reviews: 1

How Do G2 Users Rate Gloo Gateway?

  • Scalability: 10.0/10 (Category avg: 9.0/10)
  • API Testing: 8.3/10 (Category avg: 8.8/10)
  • Orchestration: 10.0/10 (Category avg: 8.7/10)

Who Is the Company Behind Gloo Gateway?

  • Seller: Solo.io
  • Year Founded: 2017
  • HQ Location: Cambridge, Massachusetts, United States
  • LinkedIn® Page: www.linkedin.com
    267 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Medium

What Are Recent G2 Reviews of Gloo Gateway?

What Are G2 Users Discussing About Gloo Gateway?

IBM webMethods Managed File Transfer (MFT)

IBM webMethods MFT is a modern, enterprise-grade managed file transfer solution designed for secure, automated transferring of mission-critical files with hybrid iPaaS—eliminating the need for multiple integration tools. With broad protocol support, built-in encryption, real-time triggers and configurable auto-retry capabilities, it minimizes manual intervention, while encrypting data at rest and in transit, mitigating security risks. Its intuitive user interface allows quick file transfer configuration, reducing IT dependency and accelerating partner onboarding- simplifying workflows, providing end-to-end visibility with real-time insights, and ensuring SLA compliance and audit readiness.

Average Rating: 4.5/5.0

Total Reviews: 2

How Do G2 Users Rate IBM webMethods Managed File Transfer (MFT)?

  • Has the product been a good partner in doing business?: 7.5/10 (Category avg: 8.9/10)

Who Is the Company Behind IBM webMethods Managed File Transfer (MFT)?

  • Seller: IBM
  • Year Founded: 1911
  • HQ Location: Armonk, New York, United States
  • Twitter: @IBMSecurity
    74,660 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    328,202 employees on LinkedIn®
  • Ownership: SWX:IBM

Who Uses This Product?

  • Company Size: 100% Large

What Do G2 Reviewers Say About IBM webMethods Managed File Transfer (MFT)?

AI-generated summary from verified user reviews

Pros
  • Users value the robust security features of IBM webMethods MFT, ensuring safe and reliable file transfers.
  • Users value the robust API management in IBM webMethods MFT, enhancing secure and efficient file transfers.
  • Users value the automation capabilities of IBM webMethods MFT, greatly enhancing efficiency and reducing manual intervention in file transfers.
  • Users value the ease of management with IBM webMethods MFT, enhancing the efficiency of their file transfer processes.
  • Users value the advanced security features and seamless integration capabilities of IBM webMethods MFT for file transfers.
Cons
  • Users find the setup and configuration complex, particularly beginners, complicating their overall experience with IBM webMethods MFT.
  • Users find the difficult configuration of IBM webMethods MFT challenging, particularly for those new to the platform.
  • Users find the difficult learning curve of IBM webMethods MFT challenging, especially for beginners needing setup and troubleshooting help.
  • Users find inadequate logging problematic, complicating troubleshooting and making error identification a time-consuming process.
  • Users feel the product lacks customized features such as APIs, limiting its functionality and versatility.

What Are Recent G2 Reviews of IBM webMethods Managed File Transfer (MFT)?

API Marketplace

DigitalAPI Marketplace gives your teams and partners a single place to explore, test, onboard, and adopt APIs with speed and consistency. Once you catalog all your internal APIs into our unified developer portal, select the APIs you want to monetise, and you can expose them to external partners and customers with our external branded marketplace.

Average Rating: 5.0/5.0

Total Reviews: 1

How Do G2 Users Rate API Marketplace?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 8.9/10)

Who Is the Company Behind API Marketplace?

  • Seller: DigitalAPI
  • Year Founded: 2017
  • HQ Location: Austin, Texas, United States
  • LinkedIn® Page: in.linkedin.com
    123 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Large

What Do G2 Reviewers Say About API Marketplace?

AI-generated summary from verified user reviews

Pros
  • Users benefit from the in-depth usage analytics that enhance API discovery and adoption for their customers.
  • Users value the ease of API discovery and adoption provided by the API Marketplace, enhancing customer experience.
  • Users find the ease of API discovery in the Marketplace invaluable for enhancing customer experience and integration.
  • Users appreciate the easy API discovery features of API Marketplace, enhancing customer adoption and experience.
  • Users value the easy collaboration features of the API Marketplace, enhancing API discovery and usage analytics.
Cons
  • Users feel the API Marketplace could benefit from more features to enhance the basic portal experience.
  • Users feel the platform could benefit from additional features to enhance their experience and functionality.

What Are Recent G2 Reviews of API Marketplace?

AutoStub 2.0

AutoStub™ is an essential tool to fasten API development. It can significantly reduce your build time by quickly designing, prototyping, documenting and testing the APIs. AutoStub creates a functional mock that allows developers or prospective users to work with the API before it’s fully implemented. It allows developers to mock web services, helping developers of applications that depend on APIs to speed development and improve quality by facilitating functional testing. Key Features: 1. Simulate ReST and SOAP services 2. Input format - Swagger files for ReST, WSDL files for SOAP services 3. Support for GET, POST, PUT, DELETE methods in ReST 4. Create WSDL/Swagger 2.0 based mock services; generate dummy data for API testing 5. Get an endpoint URL that can be used on a third party SOAP client tool 6. Improves quality by facilitating functional testing 7. Can handle multiple test scenarios together

Who Is the Company Behind AutoStub 2.0?

Axonect

Axonect is a robust, full-stack, product suite that supports rapid service delivery, improves agility, accelerates partnerships, and transforms the enterprise landscape. Axonect products seamlessly connect northbound and southbound systems allowing enterprises to be agile, digital service providers while changing the footprint of the enterprise to meet evolving business needs.

Who Is the Company Behind Axonect?

BridgeStackAPI

BridgeStackAPI is a plug-and-play platform that makes it simple to control API usage per client without having to build and maintain a custom gateway from scratch. With it, you can create individual keys, define usage limits, restrict routes, configure access schedules, and monitor logs with greater clarity. It is ideal for companies that share API access with clients, partners, or internal systems and need more control, security, and traceability without relying on a single shared token or repeating this kind of development in every project.

Who Is the Company Behind BridgeStackAPI?

Etlworks Integrator

The Etlworks Integrator is a modern, cloud-first, any-to-any data integration platform that scales with the business. It can connect to business applications, databases, structured, semi-structured, and unstructured data of any type, shape, and size. You can create, test, and schedule very complex data integration and automation scenarios and data integration APIs in no time, right in the browser, using an intuitive drag-and-drop interface, scripting languages, and SQL. The Etlworks Integrator supports real-time change data capture (CDC) from all major databases, EDI transformations, and many other fundamental data integration tasks. Most importantly, it really works as advertised.

Who Is the Company Behind Etlworks Integrator?

  • Seller: Etlworks
  • Year Founded: 2016
  • HQ Location: Pittsburgh, US
  • Twitter: @etlworks
    480 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    2 employees on LinkedIn®

Leen Unified API

Leen's Unified API streamlines the integration process by combining multiple APIs into a single, standardized interface. This approach simplifies development by providing consistent access to various services, abstracting away complexity, standardizing interactions, normalizing data formats, centrally handling security, and offering scalability. Developers benefit from maintaining just one integration while accessing centralized documentation and support resources. By leveraging Leen's Unified API, product and security teams can focus on their core roadmaps, rather than getting bogged down with integrations and data pipelines.

Who Is the Company Behind Leen Unified API?

  • Seller: Leen
  • Year Founded: 2023
  • HQ Location: San Francisco, US
  • LinkedIn® Page: www.linkedin.com
    14 employees on LinkedIn®

RequestRocket

RequestRocket's is a hyper scalable universal API authentication and authorization service. RequestRocket empowers organisations to centralise the management of access to third party systems, while offering the ability to down-scope permissions with fine grained access controls for any platform API. Our API's enable on demand configuration of authentication proxies across 6 continents allowing for low latency and high availability security improvements that comply with data sovereignty requirements.

Average Rating: 5.0/5.0

Total Reviews: 1

How Do G2 Users Rate RequestRocket?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 8.9/10)

Who Is the Company Behind RequestRocket?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of RequestRocket?

SyncTree

SyncTree strives to be a "Super Connecting Platform" that can easily connect any services you want. With SyncTree, which consists of SyncTree STUDIO, a solution for building backend business logic with block coding, and Block Store, a platform for buying and selling pre-made backend function blocks like App Store, you can organically utilize data and connect services to achieve unlimited service expansion. Based on aPaaS, Block Store provides APIs from various services such as ChatGPT, DALLE, YouTube, etc. in the form of 'backend function blocks', which you can subscribe to and then combine as you want quickly in SyncTree STUDIO to build your business logic. SyncTree is for everyone, whether you're an individual or a business, and you can subscribe and use it according to your needs, from the free version to the PRO version.

Who Is the Company Behind SyncTree?

  • Seller: Ntuple
  • Year Founded: 2013
  • HQ Location: Seoul, KR
  • LinkedIn® Page: www.linkedin.com
    14 employees on LinkedIn®

Unified.cc by 500apps

Unified.cc is designed to allow developers to connect multiple APIs via a single API interface. By utilizing this platform, businesses can reduce the overall cost of API development and management. It assists teams with integration and other maintenance tasks. It offers a unified platform for all APIs, enabling developers to find and use the APIs they require. Businesses can use the API platform to connect with new customers and partners, as well as develop new products and services. Feature: - API Led Connectivity - Easy Deployment - Advanced Security - API Gateway - API Manager - Unlimited Projects Get access to 50 apps with Unified.cc for $14.99 per user

Who Is the Company Behind Unified.cc by 500apps?

  • Seller: 500apps
  • Year Founded: 2019
  • HQ Location: New York, California
  • Twitter: @SitePing500apps
    26 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    1 employees on LinkedIn®

Wooffer

Wooffer is a server monitoring platform designed to allow developers and business owners to have real-time insights into server status. Wooffer is your loyal guard watching out for any potential issues and sending alerts for server overloading in Slack. Wooffer users can resolve crashes before they impact your users ensuring seamless user experience. Wooffer gives: -API visualization to understand how your routes are working. - Log Management to keep track of your server activities. - Real-time usage analytics to monitor your infrastructure usage. - Bug tracking and alert services for when your server is nearing a crash! - Resource usage analytics

Who Is the Company Behind Wooffer?