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Open Source Projects using JSON Schema

A curated collection of the 114 best open source software using JSON Schema. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.

Cross-platform terminal with AI built in
  • Stars


    22,105
  • Last commit


    14 days ago
  • License


    Apache-2.0
Enhance your terminal with AI, file previews, and web browsing. Available on MacOS, Linux, and Windows.

Open Source Alternative to:

Run coding agents from your phone, desktop, or terminal
  • Stars


    15,019
  • Last commit


    2 hours ago
  • License


    AGPL-3.0
Self-hosted orchestrator for coding agents like Claude Code, Codex, and Cursor, controlled from phone, desktop, web, or CLI.

Open Source Alternative to:

No-code web scraping, crawling, and extraction platform
  • Stars


    17,286
  • Last commit


    12 hours ago
  • License


    AGPL-3.0
Turn any website into structured data using a visual recorder, natural language prompts, or API. Includes proxy rotation, scheduling, and webhook integrations.

Open Source Alternative to:

Create, edit and share documents with real-time collaboration
  • Stars


    16,753
  • Last commit


    5 hours ago
  • License


    MIT
Transform document collaboration with real-time editing, version control, and secure sharing features that enhance team productivity and communication.

Open Source Alternative to:

Run long-running AI tasks without timeouts or servers
  • Stars


    16,117
  • Last commit


    3 hours ago
  • License


    Apache-2.0
Open source TypeScript platform for building and deploying AI agents and background workflows with retries, queues, observability, and elastic scaling.

Open Source Alternative to:

Ad-free music player that streams from multiple sources
  • Stars


    18,339
  • Last commit


    10 days ago
  • License


    AGPL-3.0
Open-source desktop music player for Windows, macOS, and Linux. Search artists and tracks across multiple sources, build playlists, and listen without ads or tracking.

Open Source Alternative to:

Open-source API documentation and testing platform
  • Stars


    15,987
  • Last commit


    2 hours ago
  • License


    MIT
Scalar is an open-source tool for building, customizing, and hosting interactive API documentation with OpenAPI support.

Open Source Alternative to:

Your open-source personal assistant for server automation
  • Stars


    17,460
  • Last commit


    2 days ago
  • License


    MIT
Leon is an AI-powered virtual assistant that lives on your server, automating tasks and managing your digital life with privacy and customization.

Open Source Alternative to:

Open-source ecommerce platform for WordPress
  • Stars


    10,473
  • Last commit


    3 hours ago
  • License


    GPL-2.0
Build and manage online stores with customizable features, extensions, and themes for businesses of all sizes.

Open Source Alternative to:

Build powerful AI agents with cutting-edge LLM technology
  • Stars


    14,880
  • Last commit


    1 day ago
  • License


    MIT
A comprehensive platform for creating AI agents with intuitive tools, extensive integrations, and enterprise-grade features powered by the latest language models.

Open Source Alternative to:

Build full-stack apps with TypeScript and real-time sync
  • Stars


    12,429
  • Last commit


    3 hours ago
  • License


    Unknown
Open-source reactive database that keeps your web and mobile apps in sync. Write everything in TypeScript with built-in auth, cron jobs, and AI integration.

Open Source Alternative to:

Build beautiful documentation sites with Next.js
  • Stars


    12,977
  • Last commit


    6 hours ago
  • License


    MIT
A flexible Next.js framework for creating stunning documentation sites with MDX support, built-in search, and customizable components.

Open Source Alternative to:

Open source messaging with privacy and community focus
  • Stars


    10,129
  • Last commit


    8 hours ago
  • License


    AGPL-3.0
Free, open-source instant messaging and VoIP platform with full Markdown support, voice/video calls, moderation tools, and self-hosting options for communities.

Open Source Alternative to:

Your all-in-one marketplace for digital creators and products
  • Stars


    9,617
  • Last commit


    3 hours ago
  • License


    MIT
A digital marketplace platform where creators can sell digital products, from courses to software, with built-in payment processing and content delivery.

Open Source Alternative to:

Visual database for workflow automation across apps
  • Stars


    15,573
  • Last commit


    10 months ago
  • License


    AGPL-3.0
AITable.ai offers a visual database platform that simplifies workflow automation and connects to over 6,000 apps through integrations like Zapier and Make.

Open Source Alternative to:

Open-source LLM tracing & evaluation for AI optimization
  • Stars


    11,190
  • Last commit


    2 hours ago
  • License


    Elastic-2.0
Open-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.

Open Source Alternative to:

Effortless screen recording for macOS
  • Stars


    19,335
  • Last commit


    2 years ago
  • License


    MIT
Capture, edit, and share your screen with ease. Create stunning GIFs and videos for tutorials, demos, and bug reports.

Open Source Alternative to:

Feature flags for rapid, risk-free software deployment
  • Stars


    13,758
  • Last commit


    7 hours ago
  • License


    AGPL-3.0
A powerful feature management platform enabling gradual rollouts, A/B testing, and seamless integration for continuous delivery.

Open Source Alternative to:

Build product integrations with 500+ APIs in hours
  • Stars


    11,591
  • Last commit


    2 hours ago
  • License


    Elastic-2.0
Complete integrations platform with 500+ pre-built APIs, code-first approach, unified data models, and enterprise-grade security. Free tier available.

Open Source Alternative to:

Free online accounting for small businesses and freelancers
  • Stars


    10,092
  • Last commit


    6 hours ago
  • License


    Unknown
Self-hostable accounting software covering invoicing, expense tracking, cash flow, and client portals. Free to use, available in 50+ languages.

Open Source Alternative to:

Goal-driven project management for all brains
  • Stars


    11,444
  • Last commit


    11 days ago
  • License


    AGPL-3.0
Open-source software designed to streamline tasks, boost productivity, and enhance collaboration for teams of all types, including those with ADHD and neurodiversity.

Open Source Alternative to:

Effortless CI/CD for modern cloud applications
  • Stars


    7,791
  • Last commit


    3 hours ago
  • License


    MIT
Durable orchestration platform for managing AI agents, scheduling background tasks, and running mission-critical workflows.

Open Source Alternative to:

Open-source A/B testing and feature flagging platform
  • Stars


    8,156
  • Last commit


    2 hours ago
  • License


    MIT
Powerful, developer-friendly experimentation tool for data-driven product decisions. Seamless integration, real-time insights, and flexible deployment.

Open Source Alternative to:

Effortless API mocking for seamless development
  • Stars


    8,378
  • Last commit


    2 days ago
  • License


    MIT
Create, run, and share mock REST APIs without coding. Boost productivity with an intuitive interface and powerful features.

Open Source Alternative to:

Auto-generated network diagrams that stay current
  • Stars


    5,425
  • Last commit


    15 hours ago
  • License


    AGPL-3.0
Discovers your network via SNMP, LLDP, and ARP, then builds and maintains L2/L3 topology diagrams, host inventories, and service dependency maps automatically.

Open Source Alternative to:

Build stateful backends with in-memory actors
  • Stars


    6,085
  • Last commit


    4 hours ago
  • License


    Apache-2.0
Open-source infrastructure for long-lived, in-memory processes called Actors. Combines state and compute with sub-millisecond latency, realtime capabilities, and horizontal scaling.

Open Source Alternative to:

Sync and transform data from any source to any destination
  • Stars


    6,495
  • Last commit


    6 hours ago
  • License


    MPL-2.0
CloudQuery is an open-source ELT platform that enables easy data integration from hundreds of cloud and security tools to any destination.

Open Source Alternative to:

Intercept, modify, and debug HTTP(S) requests effortlessly
  • Stars


    6,749
  • Last commit


    10 hours ago
  • License


    AGPL-3.0
A powerful browser extension and desktop app for developers to manipulate network requests, debug APIs, and improve web app testing

Open Source Alternative to:

Open-source BI for modern data teams
  • Stars


    6,080
  • Last commit


    3 hours ago
  • License


    MIT
Self-serve analytics platform that transforms dbt models into interactive dashboards, enabling data-driven decisions across organizations.

Open Source Alternative to:

Continuous web-based localization for global reach
  • Stars


    6,038
  • Last commit


    5 hours ago
  • License


    GPL-3.0
Web-based continuous localization platform with version control integration, quality checks, and clean interface. Used by 2,500+ projects in 165+ countries.

Open Source Alternative to:

Lightweight self-hosted bookkeeping with AI receipt scanning
  • Stars


    5,461
  • Last commit


    2 hours ago
  • License


    MIT
A privacy-first personal finance app with two-level accounts, multi-currency support, AI receipt recognition, and broad data import from formats like GnuCash and Firefly III.

Open Source Alternative to:

Full observability for AI agents in production
  • Stars


    4,601
  • Last commit


    11 hours ago
  • License


    MIT
Open-source platform for monitoring AI agents: captures traces, surfaces failure patterns, alerts on issues, and helps you verify fixes with automated evals.

Open Source Alternative to:

Build reliable AI agents with unified tool integration
  • Stars


    4,884
  • Last commit


    3 months ago
  • License


    Apache-2.0
Platform for connecting AI agents to 500+ tools with built-in multi-tenant auth management and granular permissions using either function calling or a unified MCP server

Open Source Alternative to:

Build reliable LLM apps with integrated workflows
  • Stars


    4,530
  • Last commit


    3 hours ago
  • License


    MIT
Open-source LLMOps platform providing prompt management, evaluation, and observability tools for building robust AI applications with team collaboration.

Open Source Alternative to:

Enterprise workplace AI with data you own and control
  • Stars


    3,681
  • Last commit


    4 hours ago
  • License


    Apache-2.0
Self-hostable enterprise AI platform that unifies business data across apps, powers a knowledge graph for cited answers, and lets teams build AI agents across their stack.

Open Source Alternative to:

Open-source data integration for modern stacks
  • Stars


    5,043
  • Last commit


    1 day ago
  • License


    MIT
Collect, transform, and sync data across your entire infrastructure with a flexible, code-based approach to data integration.

Open Source Alternative to:

Build powerful websites with the open-source CMS
  • Stars


    4,277
  • Last commit


    4 hours ago
  • License


    GPL-2.0
A flexible and extensible content management system for creating dynamic websites and digital experiences

Open Source Alternative to:

Open-source growth platform for customer-centric teams
  • Stars


    4,073
  • Last commit


    3 hours ago
  • License


    AGPL-3.0
All-in-one solution for marketing, sales, and customer service. Boost engagement, streamline workflows, and drive growth.

Open Source Alternative to:

Open source security automation platform for builders
  • Stars


    3,779
  • Last commit


    3 hours ago
  • License


    AGPL-3.0
Tracecat is a scalable, self-hostable platform for automating security workflows and playbooks without limits.

Open Source Alternative to:

Open source ecommerce platform for modern businesses
  • Stars


    3,406
  • Last commit


    3 hours ago
  • License


    MIT
A flexible and customizable ecommerce solution that enables businesses to build responsive online stores with advanced features and automation capabilities.

Open Source Alternative to:

Open source agency management tool for streamlined success
  • Stars


    3,151
  • Last commit


    2 days ago
  • License


    AGPL-3.0
Worklenz is a comprehensive project management platform that helps agencies organize tasks, track resources, and boost productivity.

Open Source Alternative to:

Transform any TV into professional digital signage
  • Stars


    3,654
  • Last commit


    1 day ago
  • License


    Unknown
Free open-source digital signage software that turns Raspberry Pi or old PCs into powerful display solutions. Manage images, videos, and web content easily.

Open Source Alternative to:

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