The Best API Mocking Tools in 2026
We researched API mocking tools through official websites, including pricing pages, plan tables, and product documentation. Rankings reflect each product’s core endpoint-simulation job, value for money, and verified features for configuring responses, matching requests, importing definitions, and supporting development workflows around API mocking.
Our top picks
-
Top ranked
Beeceptor#1 of 269.4/10A broad API mocking platform with protocol coverage, contract testing, and hosted or self-hosted deployment.
Free plan · 10-day trial
-
Runner-up
MockServer#2 of 269.1/10A free, open-source choice for teams that need broad, self-hosted API control.
Free plan
-
Top-ranked free plan
WireMock#3 of 269.0/10A flexible mocking platform spanning hosted, local, CI/CD, Kubernetes, and self-managed use.
Free plan
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
The full ranking 26 tools, best first
-
Best forTeams needing broad hosted API mocking
A broad API mocking platform with protocol coverage, contract testing, and hosted or self-hosted deployment.
Free plan · 10-day trial Our Beeceptor verdict → Visit BeeceptorFor vendors Sponsor this spot · #1 · $149/mo →9.4/10★★★★★Visit Beeceptor -
Best forSelf-hosted teams needing deep controls
A free, open-source choice for teams that need broad, self-hosted API control.
9.1/10★★★★★Visit MockServer -
Best forTeams needing mature collaborative mocking
A flexible mocking platform spanning hosted, local, CI/CD, Kubernetes, and self-managed use.
9.0/10★★★★☆Visit WireMock -
Best forOpen-source contract-testing teams
A wide protocol and deployment toolkit for open-source contract-testing teams.
8.9/10★★★★☆Visit Microcks -
Best forEnterprise service-virtualization programs
A broad enterprise tool for stateful API, database, messaging, and legacy-service simulation.
8.8/10★★★★☆Visit Parasoft -
Best forTeams wanting a polished local-to-cloud workflow
A broad API mocking toolkit with a capable free plan and paid cloud collaboration.
8.6/10★★★★☆Visit Mockoon -
Best forFrontend teams mocking across browser and Node
A flexible JavaScript mock layer for frontend development, testing, and demos.
- OpenAPI import
- Local deployment
- Dynamic responses
8.5/10★★★★☆Visit site -
Best forTeams replaying captured real traffic
A flexible choice for capturing, editing, and replaying real HTTP and HTTPS traffic.
8.3/10★★★★☆Visit Hoverfly -
Best forOpenAPI contract validation and mock servers
A focused choice for OpenAPI mocking, contract validation, and CI workflows.
8.2/10★★★★☆Visit Prism -
Best forDevelopers needing flexible specification-based mocks
A flexible open-source choice for specification-based API mocking and dynamic responses.
- OpenAPI import
- Mock data generation
- Local deployment
8.1/10★★★★☆Visit Imposter -
Best forOpenAPI-driven teams needing PR environments
A flexible HTTP mock server for schema validation, failure testing, and pull-request environments.
- OpenAPI import
- Mock data generation
- Local deployment
8.0/10★★★★☆Visit Mockzilla -
Best forSmall teams wanting hosted mocks plus local CLI
A flexible API mocking service combining hosted endpoints, local serving, and dynamic responses.
- OpenAPI import
- Mock data generation
- Local deployment
7.9/10★★★★☆Visit Mockfly -
Best forHosted multi-protocol specification mocks
A flexible hosted mock API workspace with broad protocol support and a $29 Team tier.
- OpenAPI import
- Mock data generation
- Dynamic responses
7.8/10★★★★☆Visit moqapi.dev -
Best forHosted REST API prototypes
A focused hosted workspace for building realistic REST API prototypes before backend work is ready.
- OpenAPI import
- Mock data generation
- Dynamic responses
7.7/10★★★★☆Visit MockAPI -
Best forNode and TypeScript test developers
A flexible choice for detailed HTTP mocking in Node and TypeScript test suites.
- Local deployment
- Dynamic responses
7.6/10★★★★☆Visit Mockttp -
Best forExpress-based OpenAPI mock services
A focused, open-source choice for Express-based OpenAPI mock services.
- OpenAPI import
- Local deployment
- Dynamic responses
7.5/10★★★★☆Visit OpenAPI Server -
Best forLightweight OpenAPI schema mock servers
A focused, self-hosted choice for generating HTTP mocks from OpenAPI 3.x.
- OpenAPI import
- Mock data generation
- Local deployment
7.4/10★★★★☆Visit OpenAPI Mock -
Best forBrowser-only frontend API simulations
A focused open-source library for simulating REST and GraphQL APIs in the browser.
- Mock data generation
- Local deployment
- Dynamic responses
7.3/10★★★★☆Visit Mirage JS -
Best forSimple JavaScript REST data mocks
A capable, free local REST mock for JavaScript projects that do not need platform features.
- Mock data generation
- Local deployment
- Dynamic responses
7.2/10★★★★☆Visit json-server -
Best forTeams needing a simple paid hosted mock API
A focused hosted and local mocking tool with useful response controls and a paid-only model.
- Mock data generation
- Local deployment
- Dynamic responses
7.1/10★★★★☆Visit Mocki -
Best forMinimal browser request interception
A focused open-source choice for intercepting browser API requests in tests.
- Dynamic responses
6.9/10★★★☆☆Visit Pretender.js -
Best forSelf-hosted HTTP and WebSocket mocks
A self-hosted, open-source mock server with dynamic responses and Socket.IO support.
- Local deployment
- Dynamic responses
6.8/10★★★☆☆Visit API-Mocked -
Best forLocal HTTP tests needing scripted responses
A focused open-source choice for scripted local HTTP client tests.
- Local deployment
- Dynamic responses
6.7/10★★★☆☆Visit MockWebServer -
Best forVS Code users building local mocks
A local, open-source mock server for VS Code workflows and YAML-based API scenarios.
- Local deployment
6.6/10★★★☆☆Visit MockPilot -
Best forOpenAPI contract validation and mock servers
A focused choice for OpenAPI mocking, contract validation, and CI workflows.
6.3/10★★★☆☆Visit Prism -
Best forImage and video processing rather than API mocking
A capable media-processing API, but not a focused API mocking tool.
6.0/10★★★☆☆Visit Knockout API
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Dynamic responses | Score |
|---|---|---|---|---|---|
| 1 | Beeceptor | Yes | $10/mo | 9.4 | |
| 2 | MockServer | Yes | Free | 9.1 | |
| 3 | WireMock | Yes | 9.0 | ||
| 4 | Microcks | Yes | Free | 8.9 | |
| 5 | Parasoft Virtualize | Yes | 8.8 | ||
| 6 | Mockoon | Yes | $100/mo | 8.6 | |
| 7 | Mock Service Worker | Yes | Free | Yes | 8.5 |
| 8 | Hoverfly | No | $10/mo | 8.3 | |
| 9 | Prism | Yes | Free | 8.2 | |
| 10 | Imposter | Free | Yes | 8.1 | |
| 11 | Mockzilla | Yes | $10/mo | Yes | 8.0 |
| 12 | Mockfly | Yes | €15/mo | Yes | 7.9 |
| 13 | moqapi.dev | Yes | $29/mo | Yes | 7.8 |
| 14 | MockAPI | Yes | Yes | 7.7 | |
| 15 | Mockttp | Free | Yes | 7.6 | |
| 16 | OpenAPI Server | Free | Yes | 7.5 | |
| 17 | OpenAPI Mock | Free | Yes | 7.4 | |
| 18 | Mirage JS | Free | Yes | 7.3 | |
| 19 | json-server | Free | Yes | 7.2 | |
| 20 | Mocki | No | $15/mo | Yes | 7.1 |
| 21 | Pretender.js | Free | Yes | 6.9 | |
| 22 | API-Mocked | Free | Yes | 6.8 | |
| 23 | MockWebServer | Free | Yes | 6.7 | |
| 24 | MockPilot | Free | 6.6 | ||
| 25 | Stoplight Prism | Yes | Free | 6.3 | |
| 26 | Knockout API | Yes | $10/mo | 6.0 |
Head-to-head All 27 comparisons →
- Beeceptor vs MockServer
- Beeceptor vs WireMock
- Beeceptor vs Microcks
- Beeceptor vs Parasoft Virtualize
- Beeceptor vs Mockoon
- Beeceptor vs Mock Service Worker
- Beeceptor vs Hoverfly
- MockServer vs WireMock
- MockServer vs Microcks
Explore other topics All topics →
- AI Tools 303 directories · 8,269 tools ranked AI Writing Tools · AI Video Generators · Text-to-Speech Software
- Web Hosting & Domains 275 directories · 6,107 tools ranked Shared Web Hosting · Managed Cloud Hosting · Dedicated Server Hosting
- Productivity 157 directories · 4,948 tools ranked Note-Taking Apps · Calendar Apps · Project Management Software
- Marketing 135 directories · 3,977 tools ranked SEO Tools · Influencer Marketing Platforms · Email Marketing Software
- Sales & CRM 152 directories · 4,161 tools ranked Real Estate CRM Software · CRM Software · Proposal Software
- Customer Service 55 directories · 1,547 tools ranked Chatbot Builders · Knowledge Base Software · Call Center Software
How we rank API mocking tools
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update