Apidog suits teams that design and test APIs, particularly those using specifications, automated request sequences, or Postman scripts.
Free plan Free trial From $9 a month, billed yearly WebWindowsMacLinuxBrowser extensionAPI+1
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Best Apis 2026
Facts read 20 Sep 2026 – 15 Oct 2026
This list covers API tools for building, exposing, monitoring, and testing application programming interfaces. It helps developers and teams compare gateways, portals, analytics, deployment choices, and testing support.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 Apidog | Apidog suits teams that design and test APIs, particularly those using specifications, automated request sequences, or Postman scripts. | 6.0 | $9 a month, billed yearly | Free plan | Web, Windows, Mac, Linux | 15 Oct 2026 |
| 02 Scalar | Scalar suits developers and teams creating API documentation, client libraries, or API registries. | 6.0 | $150 a month, billed yearly | Free plan | Web, Windows, Mac, Linux | 15 Oct 2026 |
| 03 Insomnia | Insomnia suits developers and teams that design, test or govern APIs and want collaboration or CI/CD workflows. | 5.8 | $12 a month | Free plan | Windows, Mac, Linux, Self-hosted | 30 Sep 2026 |
| 04 Amazon API Gateway | It suits teams building APIs for applications and backend services, especially those working with AWS services. | 5.7 | Free plan | Free plan | Android, iPhone & iPad, Web, API | 14 Oct 2026 |
| 05 Postman | Postman suits developers and teams that need API design, testing, documentation, or monitoring tools. | 5.7 | $9 a month, billed yearly | Free plan | Web, Windows, Mac, Linux | 29 Sep 2026 |
| 06 ReadyAPI | ReadyAPI suits teams handling API functional, security, performance, or virtualization work. | 5.5 | — | Free trial | Web, Windows, Mac, Linux | 15 Oct 2026 |
| 07 Google Cloud Endpoints | Google Cloud Endpoints suits teams seeking API lifecycle management, access policies, and usage analytics in a hybrid deployment. | 5.4 | $1.50 usage-based | Free plan | Web, Mac, Linux, API | 9 Oct 2026 |
| 08 SwaggerHub | SwaggerHub suits API teams and cross-functional contributors who need shared design, documentation, testing, or governance workflows. | 5.4 | $740 a year | Free plan | Web, Self-hosted | 29 Sep 2026 |
| 09 Kong Gateway | 5.3 | Free plan | Free plan | Web, Linux, API, Self-hosted | 29 Sep 2026 | |
| 10 Assertible | Assertible is aimed at QA professionals, developers and others responsible for operating a web service. | 5.2 | $25 a month | Free plan | Web, API | 9 Oct 2026 |
The page orders entries by newest releases first, using figures the makers publish. Nothing is scored.
02
Scalar
Scalar suits developers and teams creating API documentation, client libraries, or API registries.
WebWindowsMac+3 Record6.0 Visit
03
Insomnia
Insomnia suits developers and teams that design, test or govern APIs and want collaboration or CI/CD workflows.
WindowsMacLinux+1 Record5.8 Visit
04
Amazon API Gateway
It suits teams building APIs for applications and backend services, especially those working with AWS services.
AndroidiPhone & iPadWeb+1 Record5.7 Visit
05
Postman
Postman suits developers and teams that need API design, testing, documentation, or monitoring tools.
WebWindowsMac+2 Record5.7 Visit
6
ReadyAPI
WebWindowsMac+3 — Record5.5 Visit ReadyAPI suits teams handling API functional, security, performance, or virtualization work.
7
Google Cloud Endpoints
WebMacLinux+2 $1.50 usage-based Record5.4 Visit Google Cloud Endpoints suits teams seeking API lifecycle management, access policies, and usage analytics in a hybrid deployment.
8
SwaggerHub
WebSelf-hosted $740 a year Record5.4 Visit SwaggerHub suits API teams and cross-functional contributors who need shared design, documentation, testing, or governance workflows.
10
Assertible
WebAPI $25 a month Record5.2 Visit Assertible is aimed at QA professionals, developers and others responsible for operating a web service.
11
Checkly
WebLinuxAPI $24 a month Record5.2 Visit Checkly is intended for developers, SRE and platform teams, QA engineers, and engineering managers who need API and interface monitoring.
12
Redocly
WebBrowser extensionAPI $10 a month Record5.2 Visit Redocly suits developers, technical writers, product managers, and executives responsible for API documentation or governance.
15
KrakenD API Gateway
WindowsMacLinux+1 Free plan Record4.7 Visit It suits teams that need to compose API responses, manage traffic, and apply authentication controls in a self-hosted gateway.
16
Tyk API Management
WebLinuxAPI+1 Free plan Record4.7 Visit Tyk may suit teams that need API lifecycle management across cloud, hybrid, or self-managed deployments.
17
Stoplight Elements
WebSelf-hosted Free plan Record4.4 Visit Elements may suit developers who want to add interactive OpenAPI documentation to an existing site or HTML project.
18
Apache APISIX
LinuxAPISelf-hosted Free plan Record4.2 Visit APISIX suits teams that want to self-manage API, microservice, or LLM traffic on Linux, bare metal, or Kubernetes.
Before you choose
Start with the pricing model
A free plan can help you begin without a paid commitment. Published starting prices include $1, $2, $3, $9 per user per month on annual billing, $24 per month, and $25 per month; some other tools provide pricing on request.
Check whether a free trial fits your evaluation window. Listed trial periods include 14 days and 60 days.
Match the deployment option
Consider where the API tool needs to run: web, Linux, an API, self-hosted infrastructure, macOS, or Windows. A deployment choice should fit your existing environment and operating workflow.
Compare gateway and portal features
Review API gateway support, developer portal features, and API analytics before choosing. These functions affect how you publish interfaces, guide developers, and monitor traffic.
Check protocols and testing
Supported protocols can determine whether a tool fits your interfaces. API testing support matters when you need to check requests and responses during development or after deployment.
Review code access
When open-source code is available, review its licence and make sure the project suits your deployment plans.
Questions
Do API tools on this list have free plans?
The list includes free-plan offerings alongside paid and quote-based pricing.
Are free trials available?
Yes. Listed trials include 14-day and 60-day periods. Trial availability and length depend on the tool.
Which platforms can these API tools run on?
The list includes tools for web, Linux, API, self-hosted, macOS, and Windows environments. Check each tool for its supported option.
What API features should I compare?
Assess each tool's gateway, developer portal, analytics, deployment, protocol, and API testing capabilities.
Are open-source API tools included?
Open-source code appears in the list. Review the licence before modifying or deploying code.
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