Page 3 | Best Application Development Software for JSON

Yii

Yii PHP framework

Yii is a fast, secure, and efficient PHP framework. Flexible yet pragmatic, works right out of the box, and has reasonable defaults. While Yii can virtually eliminate most repetitive coding tasks, you are responsible for the real creative work. This often starts with designing the whole system to be built, in terms of some database schema. The best way to do this is by using migrations. Yii gives you the maximum functionality by adding the least possible overhead. Sane defaults and built-in tools help you write solid and secure code. Write more code in less time with simple, yet powerful APIs and code generation. Yii is a generic web programming framework, meaning that it can be used for developing all kinds of web applications using PHP. Because of its component-based architecture and sophisticated caching support, it is especially suitable for developing large-scale applications such as portals, forums, content management systems (CMS), ecommerce projects, RESTful services, etc.

Starting Price: Free

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Phalcon

A full-stack PHP framework delivered as a C-extension. Its innovative architecture makes Phalcon the fastest PHP framework ever built. Developers do not need to know C to use Phalcon. Its functionality is exposed as PHP classes and interfaces under the Phalcon namespace, ready to be used. Zephir/C extensions are loaded together with PHP one time on the web server's daemon start process. Classes and functions provided by the extension are ready to use for any application. The code is compiled and isn't interpreted because it's already compiled to a specific platform and processor. Thanks to its low-level architecture and optimizations Phalcon provides the lowest overhead for MVC-based applications. Build single and multi-module applications with ease and pleasure. Using the file structure, scheme, and patterns you already know. Writing REST servers and applications has never been easier, with no boilerplate, and simple services that fit in one file.

Starting Price: Free

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Pop PHP Framework

Pop PHP is an open source, object-oriented PHP framework with humble beginnings dating back to 2009, where it started as a small library of components. The focus of Pop is to provide a robust set of lightweight tools to assist developers with rapid application development. With a relatively small learning curve, Pop aims to help developers in getting the features they need into their applications so they can be up and running quickly. The Pop PHP Framework contains a group of core components and an additional 30+ components that serve as a toolkit for rapid application development. The framework itself has a base set of core components as well as numerous other additional components to facilitate many of the common features needed for a PHP application. The goal is so that anyone from a novice developer to an advanced programmer can install and start using the Pop PHP Framework quickly and effectively.

Starting Price: Free

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fastn

No-code, AI-powered orchestration platform for developers to connect any data flow and create hundreds of app integrations. Use an AI agent to create APIs from human prompts, adding new integrations without coding. Connect all application requirements with one Universal API. Build, extend, reuse, and unify integrations and authentication. Compose high-performance, enterprise-ready APIs in minutes, with built-in observability and compliance. Integrate your app in just a few clicks. Instant data orchestration across all connected systems. Focus on growth, not infrastructure; manage, monitor, and observe. Poor performance, limited insights, and scalability problems lead to inefficiencies and downtime. Overwhelming API integration backlogs and complex connectors slow innovation and productivity. Data inconsistencies across systems require hours to chase down. Develop and integrate connectors with any data source, regardless of its age or format.

Starting Price: Free

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DepsHub

Everything you need to keep your team secure and up-to-date with automatic dependency updates, license checks, and security vulnerability scanning. We process library changelogs and release notes, analyze your codebase, and automatically update your dependencies, including any breaking changes. Secure tools for effective dependency management, whether you have a team of 2 or 200. See all your dependencies in one place. No more digging through repositories. Avoid legal trouble by making sure your dependencies are licensed correctly. Get notified when a dependency has a security vulnerability. Update your code only if it affects you. DepsHub helps you save time by providing a simple and easy way to monitor and update your dependencies. We support a wide range of languages and frameworks. Use the one you love and get started in minutes. Connect your favorite tools and create tickets, be notified of new issues, and more.

Starting Price: $28 per month

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Beeceptor

Beeceptor is a high-performance, no-code platform that eliminates development bottlenecks through instant API mocking and real-time traffic inspection. Don't wait for backend teams to deploy; spin up a named subdomain in seconds and start integrating immediately. Key Capabilities: - Multi-Protocol Support: Simulate REST, SOAP, GraphQL, and gRPC endpoints without writing server-side code. - AI-Powered Mocking: Use AI to generate realistic, contextually relevant test data or import OpenAPI/Swagger for CRUD-ready mocks. - Chaos Engineering: Test "unhappy paths" by simulating latencies, timeouts, and rate limits. - Local Tunneling & Proxying: Expose localhost via HTTPS and inspect live webhooks or mobile traffic in real-time. Decouple your frontend and mobile teams, stabilize CI/CD by removing third-party dependencies, and go from API design to functional mock in minutes. Beeceptor scales from solo devs to enterprise-grade integration testing.

Starting Price: $10 per month

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Starcounter

Our ACID in-memory technology and application server enable you to build lightning-fast enterprise software. Without custom tooling or new syntax. Starcounter applications let you achieve 50 to 1000 times better performance without adding complexity. Applications are written in regular C#, LINQ, and SQL. Even the ACID transactions are written in regular C# code. Full Visual Studio support including IntelliSense, debugger, and performance profiler. All the things you like, minus the headache. Write regular C# syntax with MVVM pattern to leverage ACID in-memory technology and thin client UI for extreme performance. Starcounter technology adds business value from day one. We leverage technology that’s already developed and in production, processing millions of business transactions for high-demand customers. Starcounter combines ACID in-memory database and application server into a single platform unmatched in performance, simplicity, and price.

Starting Price: Free

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Lamatic.ai

A managed PaaS with a low-code visual builder, VectorDB, and integrations to apps and models for building, testing, and deploying high-performance AI apps on edge. Eliminate costly, error-prone work. Drag and drop models, apps, data, and agents to find what works best. Deploy in under 60 seconds and cut latency in half. Observe, test, and iterate seamlessly. Visibility and tools ensure accuracy and reliability. Make data-driven decisions with request, LLM, and usage reports. See real-time traces by node. Experiments make it easy to optimize everything always embeddings, prompts, models, and more. Everything you need to launch & iterate at scale. Community of bright-minded builders sharing insights, experience & feedback. Distilling the best tips, tricks & techniques for AI application development. An elegant platform to build agentic systems like a team of 100. An intuitive and simple frontend to collaborate and manage AI applications seamlessly.

Starting Price: $100 per month

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Testmo

Manage all your test cases, sessions & automation in Testmo. Powerful unified test management, lightning-fast UI, rich reports & integrations. Works with Jira, GitHub, GitLab & many more. The most productive test case management tool available, fully integrated. Easily manage test cases, record test results and track test runs with Testmo's flexible test case management. Fully customizable, integrated with your existing tools, and optimized for productivity. Exploratory testing, session management & note taking as first-class features in Testmo's test management platform. Manage your test sessions and ad-hoc tests for fast-release cycles and continuous delivery. Full test automation integration with your existing testing tools, CI pipelines, and build systems. Automatically submit results, track tests, and report failures. Works with any tool, language, and platform. All your test automation results are in one central place, regardless of the tools you use.

Starting Price: $99 per month

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Composio

Composio is a platform that enables AI agents to seamlessly interact with external tools and applications. It provides pre-built integrations with over 1,000 apps, allowing agents to execute tasks across services like Slack, Gmail, GitHub, and more. The platform handles complex processes such as authentication, tool execution, and sandboxed environments automatically. Composio supports dynamic tool selection, ensuring agents use the right tools based on user intent. It also enables secure, parallel execution of workflows in isolated environments. Developers can build agents that move beyond conversation to perform real-world actions. By simplifying integrations and execution, Composio helps turn AI agents into powerful, task-performing systems.

Starting Price: $49 per month

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Keepsake

Replicate

Keepsake is an open-source Python library designed to provide version control for machine learning experiments and models. It enables users to automatically track code, hyperparameters, training data, model weights, metrics, and Python dependencies, ensuring that all aspects of the machine learning workflow are recorded and reproducible. Keepsake integrates seamlessly with existing workflows by requiring minimal code additions, allowing users to continue training as usual while Keepsake saves code and weights to Amazon S3 or Google Cloud Storage. This facilitates the retrieval of code and weights from any checkpoint, aiding in re-training or model deployment. Keepsake supports various machine learning frameworks, including TensorFlow, PyTorch, scikit-learn, and XGBoost, by saving files and dictionaries in a straightforward manner. It also offers features such as experiment comparison, enabling users to analyze differences in parameters, metrics, and dependencies across experiments.

Starting Price: Free

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NextAuth.js

NextAuth.js is an open source authentication solution tailored for Next.js applications, offering seamless integration with popular services like Google, Facebook, Auth0, and Apple. It supports various authentication methods, including OAuth 1.0 & 2.0, email/passwordless sign-ins, and custom username/password systems. Designed for flexibility, NextAuth.js operates efficiently in serverless environments and supports multiple databases such as MySQL, PostgreSQL, MSSQL, and MongoDB, allowing developers to choose between database sessions or JSON Web Tokens (JWT). Security features include signed, prefixed, server-only cookies, HTTP POST with CSRF token validation, and encrypted JWTs using JWS/JWE/JWK standards. The platform facilitates easy setup, enabling developers to add authentication in minutes with minimal configuration. Comprehensive documentation and a supportive community further enhance its accessibility for developers seeking a robust authentication system.

Starting Price: Free

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Auth.js

Auth.js is an open-source authentication library designed to integrate seamlessly with modern JavaScript frameworks, providing a flexible and secure authentication experience. It supports various authentication methods, including OAuth (e.g., Google, GitHub), credentials, and WebAuthn, allowing developers to choose the most suitable approach for their applications. Auth.js is compatible with multiple frameworks, such as Next.js, SvelteKit, Express, Qwik, and SolidStart, enabling developers to implement authentication across different platforms. The library offers built-in support for popular databases like Prisma, Drizzle ORM, Supabase, Firebase, and TypeORM, facilitating user data management. Security features include signed cookies, CSRF token validation, and encrypted JSON Web Tokens (JWTs), ensuring robust protection for user data. Auth.js is designed to operate efficiently in serverless environments and provides comprehensive documentation and examples.

Starting Price: Free

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Flowbite

Flowbite is an open-source library of interactive UI components built on top of Tailwind CSS, designed to expedite web development by providing a comprehensive set of pre-designed elements. It offers over 56 types of components, including buttons, alerts, breadcrumbs, pagination, and navbars, as well as interactive elements like dropdowns, modals, and tooltips, which are enhanced by custom JavaScript for added interactivity. Developers can integrate Flowbite into existing Tailwind CSS projects via npm or CDN, and it supports various frameworks such as React, Vue.js, Angular, and Next.js. The library also includes a Figma design system, enabling designers to prototype and design applications before development. For those seeking advanced features, Flowbite offers a Pro version with additional components and templates. The ecosystem is further enriched by Flowbite Blocks, providing over 450 website sections and advanced UI components built with Tailwind CSS.

Starting Price: $289 one-time payment

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Go SaaS Startup Kit

The SaaS Startup Kit is an open-source project offering a collection of Go (Golang) libraries and boilerplate code to facilitate the development of scalable software-as-a-service applications. It provides a responsive web application with user authentication, including sign-up and login functionalities, and supports create, read, update, and delete (CRUD) operations. The kit includes a RESTful API with JSON Web Token (JWT) authentication and auto-generated documentation using Swagger. For user interface design, it integrates Bootstrap, enabling the creation of responsive, mobile-first projects. Deployment is streamlined through serverless infrastructure on Amazon Web Services (AWS), with continuous integration and deployment pipelines configured via GitLab CI/CD. By offering these pre-built components and integrations, the SaaS Startup Kit aims to reduce repetitive tasks, allowing developers to focus on unique business logic and accelerate the launch of new software services.

Starting Price: Free

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NSwag

Rico Suter

NSwag is a comprehensive Swagger/OpenAPI 2.0 and 3.0 toolchain for .NET, .NET Core, ASP.NET Core, and TypeScript, written in C#. It enables developers to generate OpenAPI specifications from existing API controllers and create client code from these specifications. NSwag combines functionalities similar to Swashbuckle (for OpenAPI/Swagger generation) and AutoRest (for client generation) into a single toolchain, eliminating the need for both. Key features include the ability to generate Swagger 2.0 and OpenAPI 3.0 specifications from C# ASP.NET (Core) controllers, serve these specifications via ASP.NET (Core) middleware with integrated Swagger UI or ReDoc, and generate C# or TypeScript clients/proxies from the specifications. NSwag offers multiple usage methods, including a user-friendly Windows GUI (NSwagStudio), command-line interfaces compatible with Windows, Mac, and Linux, and integration into C# code via NuGet packages.

Starting Price: Free

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Kiota

Microsoft

Kiota is a client, plugin, and manifest generator for HTTP REST APIs described by OpenAPI. Available as a command-line tool and a Visual Studio Code (VS Code) extension, Kiota enables developers to search for API descriptions, filter and select specific endpoints, and generate models and a chained method API surface in various programming languages. This approach eliminates the need to depend on different API clients for each API and allows for precise generation of the required API surface area. Additionally, Kiota facilitates participation in the Microsoft Copilot ecosystem by enabling the generation of API plugins. The VS Code extension enhances the Kiota experience with a rich user interface, supporting features such as searching for API descriptions, filtering endpoints, and generating API clients. Users can select desired endpoints and generate clients, plugins, or other outputs, with completion notifications and easy access to generated outputs within the workspace.

Starting Price: Free

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PhantomJS

PhantomJS is a headless web browser scriptable with JavaScript, running on Windows, macOS, Linux, and FreeBSD. Utilizing QtWebKit as its back-end, it offers fast and native support for various web standards, including DOM handling, CSS selectors, JSON, Canvas, and SVG. This makes it an optimal solution for tasks such as page automation, screen capture, headless website testing, and network monitoring. For example, a simple script can load a webpage and capture it as an image.

Starting Price: Free

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Phaser

Phaser is a fast, free, and fun open source HTML5 game framework that offers WebGL and Canvas rendering across desktop and mobile web browsers. It has been actively developed for over 10 years. Phaser is built on and around web standards and puts the browser first. Web export isn't an afterthought or checkbox on a feature list; it's our home. Phaser is fully open source, and you have unrestricted access to every last line of code in the core library. Phaser has more ready-made templates than any other game framework and is a great CLI tool. Games made with Phaser have been used as the cornerstone for marketing campaigns for years. They've been deployed everywhere, including as prominent features on sites for major Hollywood film blockbusters, massive brand promotional campaigns, educational content, interactive experiences, TV shows, news reports, charity fund-raising broadcasts, live events marketing, and so many more.

Starting Price: $9 per month

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Json Genie

Tuyware

Json Genie (Viewer & Editor) is an application developed by Tuyware, designed to provide a comprehensive solution for managing JSON files on mobile devices. By leveraging the default file-opening methods, it enables users to access JSON files from various sources available on their devices. It offers functionalities such as cloning arrays, objects, and values; adding new elements; editing existing ones; and creating files from scratch. Additionally, Json Genie supports opening multiple files simultaneously, facilitating efficient data comparison and editing.

Starting Price: Free

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Online JSON Editor

The Online JSON Editor is a tool designed to facilitate the viewing, editing, formatting, validating, and beautifying of JSON data. It offers a user-friendly interface that allows for quick modifications of complex JSON code and supports multiple methods for code input, including direct typing, copy-pasting, file uploads, and URL retrieval. Online JSON Editor provides various code views such as tree, form, code, and text, enabling users to interact with JSON data in their preferred format. Additional features include real-time formatting, minification without altering code integrity, undo and redo functionalities, error highlighting with descriptive messages, and compatibility across multiple devices.

Starting Price: Free

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JSONBuddy

JSONBuddy is a comprehensive JSON editor and validator designed to streamline the creation and management of JSON and JSON Schema files. It offers a range of features, including a text editor with syntax coloring, auto-completion, and code folding, as well as a grid-style editor that simplifies the process of building JSON structures. It ensures error-free JSON through built-in syntax checking and validation against JSON Schema standards, supporting Drafts 4, 6, 7, 2019-09, and 2020-12. Additionally, JSONBuddy provides functionalities for converting between JSON, XML, and CSV formats, importing CSV data to generate JSON, and generating HTML documentation from JSON Schemas. For large JSON files, it offers robust support, allowing users to open, navigate, and edit files with thousands or even millions of lines efficiently.

Starting Price: $39 one-time payment

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JSONedit

tomeko.net

JSONedit is a lightweight, portable JSON editor that offers text, tree, and list views for efficient data visualization and manipulation. It is a standalone executable of approximately 2 MB, requiring no installation and storing settings in a .ini file within its directory. Key features include syntax highlighting, tree reuse for maintaining node expansion states between sessions, drag-and-drop functionality for node movement, and tools for array manipulation such as cloning and CSV import. Users can reformat JSON data between compact and indented styles, search within text and tree views, and validate JSON syntax. JSONedit is freeware, allowing free use and distribution.

Starting Price: Free

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Smart JSON Editor

Smart JSON Editor is a powerful application tailored for app and web developers to create, edit, and manage JSON data structures efficiently. It offers a comprehensive suite of features, including a JSON tree tool for intuitive data visualization, value transformers for generating and modifying JSON values, and an embedded HTTP server for testing within applications. Users can import and export JSON files via various methods such as file uploads, pasteboard, and iCloud integration. The application supports the creation of smart objects (classes) that maintain key structures, facilitating the organization of associative arrays. Additionally, Smart JSON Editor provides advanced functionalities like JSON Path navigation, API request management with group and endpoint hierarchies, and token transformers for dynamic value composition in API headers and parameters. It also features search and filter capabilities, an iCloud library for asset storage, local server connections, etc.

Starting Price: Free

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JSON Crack

ToDiagram

JSON Crack is an open source tool that transforms complex data formats, including JSON, YAML, CSV, XML, and TOML, into interactive, visually intuitive graphs, enhancing data comprehension and analysis. Users can input data directly, upload files, or provide URLs, and it automatically generates a visual tree graph. It supports data conversion between formats, such as JSON to CSV or XML to JSON, and includes features like JSON formatting, validation, and code generation for TypeScript interfaces, Golang structs, and JSON Schemas. Advanced tools are available for decoding JWTs, executing JQ queries, and performing JSON Path commands. Users can export visualizations as PNG, JPEG, or SVG files. All data processing occurs locally on the user's device, ensuring data privacy.

Starting Price: Free

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Activepieces

Activepieces is an AI-powered, open-source, no-code automation platform designed to help teams streamline workflows and integrate AI seamlessly into everyday tasks. With over 280 pre-built automations (MCPs), Activepieces allows users to connect to popular apps, trigger processes, and even create personalized AI agents with minimal effort. The platform includes features like human input for approvals, a robust automation builder, and AI-assisted code for more advanced workflows. It empowers decentralized teams by offering tools for collaboration, governance, and security, making it suitable for organizations of all sizes, from startups to enterprises.

Starting Price: $25/month

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Vrite

Vrite is an open source, collaborative developer content platform designed to create, manage, and deploy product documentation, technical blogs, and knowledge bases. It features a modern WYSIWYG editor with built-in Markdown support, keyboard shortcuts, IDE-level syntax highlighting, autocompletion, and customizable XML-like elements. Vrite is headless and open source, allowing integration with any front-end and automation of workflows via its API. It supports content variants for internalization and AB testing, and enables storage of metadata, including assigned members, tags, deadlines, and custom JSON, alongside your content. With bi-directional Git sync, you can quickly onboard and utilize a docs-as-code approach. The JavaScript SDK facilitates easy integration with popular frameworks and extension of Vrite's functionality. Built-in semantic search and Q&A, powered by the latest LLMs to help you find answers within your content.

Starting Price: $6 per month

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create-api.dev

Kong

Create-API.dev is an AI-powered OpenAPI specification builder by Kong that lets you generate high-quality API specs in seconds through a simple chat interface. By messaging the service, you provide your desired endpoints or rough outline, and an underlying Google LLM crafts complete, standards-compliant OpenAPI definitions that are ready to share, test, and ship. As a lightweight, web-based tool, it requires no installation. The generated specs can be exported in standard YAML or JSON formats for seamless integration with your existing API gateways and documentation pipelines. Create-API.dev operates under Google’s Generative AI Prohibited Use Policy and advises discretion before relying on or publishing any AI-generated content.

Starting Price: Free

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NoCodeAPI

NoCodeAPI is a serverless platform that lets you connect Google Sheets, Airtable, Google Analytics, Twitter, Telegram, Open Graph, MailChimp, and 50+ other apps via secure, encrypted API proxies without writing backend code. It provides a simple project-based interface where you input values, encrypt tokens, and generate lightweight endpoints ready for use in seconds. Each endpoint stores encrypted keys in the cloud, bypasses rate limits through intelligent caching, and doubles response speed with a processing layer, while built-in domain security and collaboration tools let you restrict usage to authorized domains and invite team members to share projects. With logging, mini-documentation, Redis-powered acceleration, and a marketplace of over 40 integrations, NoCodeAPI eliminates server maintenance, streamlines API workflows, and empowers front-end developers to access third-party data directly and securely.

Starting Price: $12 per month

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Void Editor

Void is an open source AI code editor and Cursor alternative built as a fork of VS Code, enabling developers to write code with advanced AI assistance while retaining full control over their data. It supports seamless integration with any large language model, such as DeepSeek, Llama, Qwen, Gemini, Claude, and Grok, connecting directly without routing through a private backend. Core features include tab‑triggered autocomplete, inline quick edit, and a versatile AI chat interface offering normal chat, a restricted gather mode for read/search-only tasks, and an agent mode that automates file and folder operations, terminal commands, and MCP tool access. Void delivers high‑performance operations, including fast apply on files with thousands of lines, alongside checkpoint management for model updates, native tool execution, and lint error detection. Developers can transfer all themes, keybindings, and settings from VS Code in one click and host models locally or via the cloud.

Starting Price: Free

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Best Application Development Software for JSON - Page 3

Compare the Top Application Development Software that integrates with JSON as of May 2026 - Page 3