Mocky.io Alternatives (September 2025)

Mockoon is the easiest and quickest way to run mock REST API servers. No remote deployment, no account required, free, open source and cross-platform.

WireMock is a tool for building mock APIs. API mocking enables you build stable, predictable development environments when the APIs you depend on are unreliable or don’t exist.

With Stoplight, you can create OpenAPI descriptions, documentation, and mock servers much faster than other API tools — with no specialized knowledge required — all in one centralized platform.

Leading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets

KrakenD is a high-performance Open Source API Gateway that enables you to build scalable and resilient microservices architectures.

Zuplo is the API management platform for developers. Build, deploy, and scale APIs faster with Zuplo.

Eliminate the need for back-end development, instantly generate RESTful APIs with PrestoAPI.

Our API Management platform is fast, scalable, modern. Including an open source API Gateway, Analytics, Dev Portal and Dashboard.

Apiary provides the leading API-First platform designed specifically to help companies accelerate and control the design, development, and documentation of APIs.

Simplify API development for users, teams, and enterprises with our open source and professional toolset. Find out how Swagger can help you and get started today.

Free IP Geolocation API, the most accurate data, use our API to quickly and easily integrate the location of visitors into your script or website.

ApexCharts is a a free and open-source modern charting library that helps developers to create beautiful and interactive visualizations for web pages.

Empower your UI/UX design team with top prototyping solutions. Create interactive web or app wireframes and prototypes without any coding skills.

Keygen is a powerful software licensing API for desktop apps, on-premise software and other software products written in C++, C#, Swift, Java, Kotlin, Node and more.

Swagger UI allows development team to visualize and interact with the API’s resources without having any of the implementation logic in place. Learn more.

Get your custom, branded URL Shortener up and running in minutes. Powering communications, commerce, marketing, advertising & more. URL Shortening API.

Quickly see all of your endpoints, your slow endpoints, and your endpoints with errors.

Rapid Application Development Environment, Generating Complete Applications Faster. RadSystems provides countless design options and components for generating modern applications and API. with Little or No Coding.

MockFlow is an intuitive web app to simplify your product design process. A quick way to create and collaborate on wireframes for web, mobile, and desktop apps.

SoapUI is the world's most widely-used automated testing tool for SOAP and REST APIs. Write, run, integrate, and automate advanced API Tests with ease. See why millions of users trust SoapUI for testing their APIs today!

API design tool from XapiHub, learn more on how you can streamline the api design process with a suite of tools today!

Wondershare Mockitt offers rapid design and prototyping with intuitive features, allowing designers to collaborate effectively and do what they do best. New features are released with Mockitt AI, including AI prototype, AI flowchart, AI mind map, AI chart, AI tables, and magic fill.

Easily unify the management, security, and governance of both synchronous and asynchronous ecosystems with the leading open source API Management platform.

Free IP Geolocation API - lookup any IP address

Free IP Geolocation API and Accurate IP Database provides country, city, zip code, ISP data in REST JSON and XML format from any IPv4 and IPv6 Address.

WeWeb is an no-code front-end builder that you can use to build on-top of any back-end. Try it out for free, and start building your web app today!

Automatically generate high-quality PDF documents from reusable Word templates and JSON or Excel data with DocuGenerate’s API and web app · Start Generating for Free

Discover Rapid's API Marketplace for easy API monetization and better API management. Learn about API testing tools and monetize your APIs effortlessly.

A powerful CMS, BaaS, and more. Power any project with Directus – a composable data platform to easily create and deploy data-rich apps.

Moqups is a streamlined and intuitive web app that helps you create and collaborate on wireframes, mockups, diagrams and prototypes — for any type of project.

Access current and historical foreign exchange rates with Fixer API. Get free, lightweight currency conversion for your applications. Click now.

Kong is the most widely adopted API gateway and service mesh, powering the world’s APIs for modern architectures. Accelerate development and productivity today!

Easily integrate electronic signatures into your apps and workflows with our secure, simple, and fast eSignature REST API. Create a free sandbox today.

Simplify API onboarding and consumption with an API Portal that’s purpose-built for API teams to create, secure, market, and monetize API products.

Address all the needs of API providers with the ‘Management Portal’ and API users with the ‘Developer Portal’. Start opening your APIs to finance ecosystem in seconds and easily implement your API Business Model.

DHTMLX UI libraries are pure JavaScript/HTML5 client-side widgets for high-speed web and mobile development. They are easily customizable and configurable via API.

Retool is the fastest way to build internal software. Use Retool's building blocks to build apps and workflow automations that connect to your databases and APIs, instantly.

The easiest way to add authentication and user management to your application. API-first & purpose-built for developers. Get started for free.

Publish always up-to-date API references, communicate changes to your users, improve discoverability and developer experience. Works with Swagger, OpenAPI, and AsyncAPI.

An API to convert HTML/CSS documents to PDF. PDFShift is the reliable, Up-to-date and high-fidelity conversion API with no maintenance costs.

An open-source Backend-as-a-Service stack for web & mobile applications, based on RESTful APIs.

Deliver the search results you want with Bing's Custom Search API. This easy-to-use and ad-free customized search tool gives you powerful ranking and more.

NinjaMock online wireframe and mockup tool. Create wireframes and mockups in minutes.

The world's only repository manager with FREE support for popular formats.

The number one platform for Agile and DevOps teams, ReadyAPI powers functional, security, performance, and virtualization of SOAP & REST APIs.

Go from app idea to production with 20% higher relevance and 74x faster response on the industry-leading vector database, Astra DB. Get started for free!

Open-Source, Full-Stack Microservice Solution.With out of the box, high performance, compatible with popular ecology, multi-language support Get started

From signing to filing, it's never been easier or more affordable to engage customers with API toolkits from the leader in online legal services.

Create a REST API from any database. Hook up any SQL or NoSQL database and the CData API Server instantly generates flexible, comprehensive, & fully documented APIs.

Easy-to-use app for accurate 2D and 3D floor plans for real estate & appraisals. Create listing floor plans in minutes with a smartphone app

Discourse is modern forum software for your community. Use it as a mailing list, discussion forum, long-form chat room, and more!

The easiest way to get access to current or historical news content from over 150,000 global news sources. Articles with all collected meta-data and extensive information extracted by AI can be retrieved in a JSON format.

Pterodactyl is an open-source game server management panel built with PHP, React, and Go. Designed with security in mind, Pterodactyl runs all game servers in isolated Docker containers while exposing a beautiful and intuitive UI to end users.

Amazon Corretto is a no-cost, multiplatform, production-ready distribution of the Open Java Development Kit (OpenJDK). Corretto comes with no-cost long-term support. Amazon runs Corretto internally on thousands of production services and Corretto is certified as compatible with the Java SE standard.

The Easiest Logo Maker. Create a professional logo online for your business, service or a project with an AI-powered logo generator. Fully customize your logo with unlimited changes. It's fun and free to try!

Balsamiq is the go-to low-fidelity wireframing tool for product managers, founders, devs, & UX teams worldwide. It's the fast, focused way to design, communicate, and share your ideas.

Fast, simple and efficient tool for running giveaways and sweepstakes in multiple social media channels. Try it for FREE!

Instant Web API will create your code in minutes. No coding required. Just run Instant Web API and let it do the work for you. Web API code generating software for MSSQL and PosgreSQL.

Baserow allows you to create databases and applications without code. Streamline your data management, collaborate in real-time, and scale with maximum flexibility. Self-host for unlimited rows and storage. Try for free today!

Open source Python framework for rapid development of applications that make use of innovative user interfaces, such as multi-touch apps.

Low-code visual way to build your app's backend workflows, APIs, scheduled jobs, cloud functions - powered by AI. Combines the best of no code and code.

WampServer est une plate-forme de développement Web sous Windows permettant de développer des applications Web dynamiques avec Apache2, PHP et de MySQL.

BTCPay Server is a self-hosted, open-source cryptocurrency payment processor. It's secure, private, censorship-resistant and free.

OctoPrint is the snappy web interface for your 3D printer that allows you to control and monitor all aspects of your printer and print jobs, right from your browser.

Create a logo for your brand completely for free. Easily generate thousands of logo ideas and choose the one you like - in only a few clicks.

Design tool like no other. Prototypes that feel real, with powers of code components, logic, states, and design systems. Join for free!

Make your APIs easy to use and your developers successful.

Web file access system for your Active Directory users and Windows file system. External access to internal folders. Web access to existsing SMB shares. Qucik WFH (work form home) solution.

Easily create web and mobile app prototypes and wireframes with Justinmind UI prototyping tool. It's FREE. Start prototyping now!

Wireframe Tool, MockFrame by 500apps helps create interactive wireframes, mockups, prototypes, and more. Get access to 50 apps for $14.99 per user.

Strapi is the next-gen headless CMS, open-source, javascript, enabling content-rich experiences to be created, managed and exposed to any digital device.

WordPress Page Builder plugin with intuitive drag and drop interface. Build any page fast and easy. Unlimited layouts for your website. Get it today!

Don’t damage your reputation with Google Analytics. Matomo is the ethical alternative where you won’t make privacy sacrifices or compromise your site.

Achieve Continuous Testing with Enterprise Test Data Generation Our System was designed to help QA teams generate the exact test data they need at a low cost GenRocket is the future of test data management and test data generation tools generators -

The free, multiplatform, feature-rich screenwriting program!

OpenSolar provides class-leading solar design accuracy, customer proposals and end-to-end tools to manage and grow your solar business, free.

An easy-to-use test management tool to manage all your manual and automated test cases and runs in a single place.

Build interactive web, iOS, Android, and other low or high-fidelity prototypes right into your web browser. Drag and drop ready-to-use, easily customizable templates, UI components, icons, and more, to prototype in minutes! No coding skills required.

The Jupyter Notebook is a web-based interactive computing platform. The notebook combines live code, equations, narrative text, visualizations, interactive dashboards and other media.

LaraPush is the best self hosted push notification tool that enables efficient and independent delivery and management of your push notifications. Unlike other services, LaraPush requires only a one-time payment, that's it!

FileZilla - The free FTP solution for both client and server. Filezilla is open source software distributed free of charge.

Easily generate license keys and validate them in your software apps. Additionally, you can offer trials, subscriptions, node-locked licenses, floating licenses, offline licenses and much more.

Grow your in-app subscription revenue with reliable purchase backend, real-time subscription analytics, and no-code monetization tests, all in one place.

Maqetta - Visual authoring of HTML5 user interfaces - in the browser

Automated AI-powered tools to generate Code & Api documentation from your source code files.

FreeRTOS is an open source, real-time operating system for microcontrollers and microprocessors that makes small, low-power devices easier to program, deploy, and secure.

Mokkup.ai is a free dashboard wireframing tool. Build stunning dashboards with a wide range of templates across industry-wide categories.

TinyMCE is the most advanced WYSIWYG HTML editor designed to simplify website content creation. The rich text editing platform that helped launched Atlassian, Medium, Evernote and more.

Free Audience Response System for live voting with your audience. Vote over the internet with any smartphone browser.

XMLSpy XML Editor is an advanced, time-saving tool for editing XML, JSON, and related technologies. See why it’s the choice of over 5 million developers with a free, 30-day trial.

Charles Web Debugging Proxy - Official Site

AWStats Official Web Site - Compile and generate advanced graphical web, ftp or mail statistics with a logfile analysis (For IIS, Apache,... distributed under GNU GPL).

Cuckoo Sandbox is the leading open source automated malware analysis system.

The Trusted Developer Experience platform for APIs. Achieve faster API onboarding via automatic SDKs, docs, code samples, and guided walkthroughs.

Instantly generate APIs from any database with built-in enterprise security controls that operates on-premises, air-gapped, or in the cloud.

H5P empowers everyone to create, share and reuse interactive content - all you need is a web browser and a web site that supports H5P.

HollaEx® provides the fastest and easiest white-label exchange software. Add your coins 💰 to your own exchange and self-host or use automated cloud service by HollaEx.

Super Simple WYSIWYG Editor on Bootstrap Summernote is a JavaScript library that helps you create WYSIWYG editors online.

Free lifetime account. Simple to learn, quick to master. Design interactive prototypes for Android, iOS, web and desktop in minutes.