Best Mock Servers in 2026

MockAPI lets users mock up APIs, generate custom data, and perform operations on it using RESTful interface.

Key MockAPI features:

Ease of Use Customizable Data Multiple Endpoints Time-saving

Create production-ready applications with zero code.

Key Modelence features:

Full-Stack JavaScript Framework Built-in Backend Services Simplified Deployment Rapid Prototyping and Development

Try for free freemium $9 / Monthly Sponsored

Unblock yourself from API dependencies, and build & integrate with APIs fast. Beeceptor helps you build a mock Rest API in a few seconds. .

Key Beeceptor features:

Ease of Use Free Tier Instant Mock Endpoints Customizable Responses

freemium $10 / Monthly (Per endpoint)

A window into your team's Dropbox activity and projects.

The Collaboration Platform for API Development.

Key Postman features:

User-Friendly Interface Collaboration Comprehensive Testing Tools Extensive API Documentation

Open Source

Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a dev‑friendly UI, built-in automation, and an extensible plugin ecosystem.

Key Insomnia REST features:

User-Friendly Interface Support for Multiple Protocols Environment Management Custom Plugins and Themes

Open Source

Mockoon is the easiest and quickest way to design and run mock REST APIs. No remote deployment, no account required, free and open-source.

Key Mockoon features:

User-Friendly Interface Quick Setup Open Source Cross-Platform Support

Open Source paid Free Trial $15 / Monthly (5 API mocks synchronized accross your devices, 1 mock deployed)

Don't waste your time. Mock your REST API and ship your application sooner. Choose one of ready-to-use response templates to simulate response from public APIs.

Key Mockservice.io features:

Ease of Use Quick Prototyping Integration Capabilities Customization

Generate a free mock API endpoint in seconds. No YAML, no Docker, no config. Fake REST API server for frontend developers.

Key MockServer.in features:

Quick and easy setup No coding required Frontend development enablement Customizable responses

freemium $12 / Monthly

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Test Socket.IO and WebSocket client and server events.

Key FinestCream features:

High Quality Ingredients Clinically Tested Range of Products Positive Customer Reviews

All-in-One workspace for API Design, Documentation, Debug, Mock, Test.

Key Apidog features:

User-Friendly Interface Comprehensive API Management Collaboration Features Integration Capabilities

freemium $9 / Monthly

The fastest way to setup you mock endpoint. Your mock API up in just a few clicks, auto generated the RESTfull endpoints you need.

paid Free Trial €3 / Monthly (10 resources)

Visual API testing for HTTP, GraphQL, gRPC, WebSocket, Kafka, and SSE. Workflow designer, load testing, mock server, CLI. AGPL.

Key RedfireForge features:

Protocols Workflow Designer Load Testing API Mock Server

Open Source