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Open Source Projects using JSON Schema

A curated collection of the 124 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.

Favicon of ACI.dev

ACI.dev

AI
Build reliable AI agents with unified tool integration

  • Stars

    4,912

  • Last commit

    5 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:

Favicon of Pipedream
Pipedream
Favicon of Jitsu

Jitsu

Open-source data integration for modern stacks

  • Stars

    5,107

  • Last commit

    8 hours 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:

Favicon of Supermetrics
Supermetrics
Favicon of Drupal

Drupal

Build powerful websites with the open-source CMS

  • Stars

    4,292

  • Last commit

    6 hours ago

  • License

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

Open Source Alternative to:

Favicon of WordPress
WordPress
Favicon of Erxes

Erxes

Open-source growth platform for customer-centric teams

  • Stars

    4,093

  • Last commit

    4 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:

Favicon of Salesforce
Salesforce
Favicon of Tracecat

Tracecat

AI
Open source security automation platform for builders

  • Stars

    3,835

  • 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:

Favicon of Splunk
Splunk
Favicon of Worklenz

Worklenz

Open source agency management tool for streamlined success

  • Stars

    3,245

  • Last commit

    4 hours 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:

Favicon of Linear
Linear
Favicon of Shopware

Shopware

Open source ecommerce platform for modern businesses

  • Stars

    3,448

  • Last commit

    4 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:

Favicon of Shopify
Shopify
Favicon of Svix

Svix

Webhook delivery platform with retries, security, and a portal

  • Stars

    3,450

  • Last commit

    6 hours ago

  • License

    MIT
Add customer-facing webhooks to your product without building the infrastructure. Handles retries, signatures, multi-tenancy, filtering, and monitoring at scale.

Open Source Alternative to:

Favicon of Zapier
Zapier
Favicon of Anthias

Anthias

Transform any TV into professional digital signage

  • Stars

    3,691

  • Last commit

    15 hours 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:

Favicon of Screenly
Screenly
Favicon of Dittofeed

Dittofeed

Open-source customer engagement platform for automation

  • Stars

    3,009

  • Last commit

    3 days ago

  • License

    MIT
Dittofeed offers low-code tools for message automation across multiple channels, including powerful segmentation and personalization features.

Open Source Alternative to:

Favicon of Mailchimp
Mailchimp
Favicon of Swirl Search

Swirl Search

AI
Get instant answers from your company knowledge

  • Stars

    3,048

  • Last commit

    19 days ago

  • License

    Apache-2.0
AI-powered search and RAG platform that connects to 100+ enterprise tools without data migration. Deploy securely on-premises with any LLM.

Open Source Alternative to:

Favicon of Algolia
Algolia
Favicon of Checkmk

Checkmk

AI
Complete IT infrastructure monitoring made simple

  • Stars

    2,557

  • Last commit

    4 hours ago

  • License

    GPL-2.0
Monitor your entire IT infrastructure with 2,000+ plugins, automated discovery, and scalable architecture. Open source and enterprise solutions available.

Open Source Alternative to:

Favicon of DataDog
DataDog
Favicon of Grida

Grida

Open canvas for designing and building web apps

  • Stars

    2,675

  • Last commit

    20 hours ago

  • License

    Apache-2.0
Design and build web applications on an open canvas with AI-powered tools, Figma integration, pixel drawing, and a modular SDK built for extensibility.

Open Source Alternative to:

Favicon of Figma
Figma
Favicon of Ballerine

Ballerine

AI agents that transform merchant risk decisions at scale

  • Stars

    2,442

  • Last commit

    7 days ago

  • License

    Unknown
Reduce fraud, accelerate underwriting, and maintain compliance with AI-driven merchant risk intelligence for PSPs, banks, and fintechs.

Open Source Alternative to:

Favicon of SumSub
SumSub
Favicon of Pretix

Pretix

Sell tickets for events, conferences, and exhibitions

  • Stars

    2,541

  • Last commit

    7 hours ago

  • License

    Unknown
Full-stack ticketing platform covering online shop, point of sale, access control, and hardware for events of any size or industry.

Open Source Alternative to:

Favicon of Eventbrite
Eventbrite
Favicon of Maple

Maple

OpenTelemetry observability with traces, logs, and metrics

  • Stars

    1,838

  • Last commit

    5 hours ago

  • License

    Unknown
Observability platform built on OpenTelemetry and ClickHouse. Collect, visualize, and query distributed traces, logs, and metrics, with an MCP server for AI agent diagnostics.

Open Source Alternative to:

Favicon of DataDog
DataDog
Favicon of dstack

dstack

AI
GPU orchestration across clouds, Kubernetes, and on-prem

  • Stars

    2,283

  • Last commit

    8 hours ago

  • License

    MPL-2.0
Unified control plane for AI compute that provisions and schedules GPU workloads across any cloud, Kubernetes cluster, or bare-metal server.

Open Source Alternative to:

Favicon of Kubernetes
Kubernetes
Favicon of Bugsink

Bugsink

Self-hosted error tracking for full control and scalability

  • Stars

    2,128

  • Last commit

    3 days ago

  • License

    Unknown
Bugsink offers real-time error tracking with self-hosting capabilities, allowing easy installation and connection to any app using Sentry-compatible SDKs.

Open Source Alternative to:

Favicon of DataDog
DataDog
Favicon of Firecamp

Firecamp

Unified API development ecosystem for modern teams

  • Stars

    2,615

  • Last commit

    8 months ago

  • License

    AGPL-3.0
All-in-one platform for API testing, documentation, and collaboration, simplifying the entire API development lifecycle.

Open Source Alternative to:

Favicon of Postman
Postman
Favicon of Vrite

Vrite

Collaborative content creation for technical teams

  • Stars

    2,004

  • Last commit

    4 days ago

  • License

    AGPL-3.0
A powerful platform for technical writing, offering real-time collaboration, version control, and seamless integrations.

Open Source Alternative to:

Favicon of Mintlify
Mintlify
Favicon of Azimutt

Azimutt

Next-Gen ERD: Design, Explore, Document and Analyze your database.

  • Stars

    2,190

  • Last commit

    2 months ago

  • License

    MIT
Azimutt is a powerful tool for seamlessly exploring, documenting, and optimizing large and complex databases.

Open Source Alternative to:

Favicon of DrawSQL
DrawSQL
Favicon of Kodus

Kodus

AI
AI code review that learns your team's standards

  • Stars

    1,486

  • Last commit

    3 hours ago

  • License

    AGPL-3.0
Open source AI code reviewer that analyzes pull requests for quality, security, and performance while respecting your existing rules and model preferences.

Open Source Alternative to:

Favicon of CodeRabbit
CodeRabbit
Favicon of Pullfrog

Pullfrog

AI
AI agent workflows built natively into GitHub

  • Stars

    1,314

  • Last commit

    2 days ago

  • License

    MIT
An open-source GitHub bot that runs AI agents to review PRs, triage issues, fix CI failures, and ship code using any LLM provider.

Open Source Alternative to:

Favicon of CodeRabbit
CodeRabbit
Favicon of WunderGraph

WunderGraph

Unify APIs, databases, and services effortlessly

  • Stars

    1,277

  • Last commit

    8 hours ago

  • License

    Apache-2.0
A powerful backend framework that simplifies API integration, enhances security, and boosts developer productivity for modern web applications.

Open Source Alternative to:

Favicon of Apollo GraphQL
Apollo GraphQL
Favicon of Terrateam

Terrateam

GitOps orchestration for infrastructure as code

  • Stars

    1,300

  • Last commit

    7 hours ago

  • License

    MPL-2.0
Automate infrastructure changes with secure GitOps workflows. Plan, validate, and deploy Terraform, OpenTofu, and Pulumi directly from pull requests.

Open Source Alternative to:

Favicon of Spacelift
Spacelift
Favicon of Meteroid

Meteroid

Flexible billing infrastructure for modern SaaS

  • Stars

    1,332

  • Last commit

    6 days ago

  • License

    AGPL-3.0
Open-source pricing and billing platform that helps SaaS companies launch, test, and scale complex billing models with ease. Features metering, invoicing, and real-time data.

Open Source Alternative to:

Favicon of Stripe Billing
Stripe Billing
Favicon of LyteNyte Grid

LyteNyte Grid

Lightning-fast React data grid for enterprise scale

  • Stars

    1,028

  • Last commit

    2 months ago

  • License

    Unknown
High-performance React data table with server-side loading, tree data, pivoting, and advanced features. Handles billions of rows with minimal bundle size.
Favicon of AgentOS

AgentOS

AI
TypeScript framework for building autonomous AI agents

  • Stars

    678

  • Last commit

    3 hours ago

  • License

    Apache-2.0
Open-source TypeScript runtime for autonomous AI agents with cognitive memory, multi-agent orchestration, runtime tool generation, and support for 21 LLM providers.
Favicon of Keyshade

Keyshade

Secure secret management with public key encryption

  • Stars

    769

  • Last commit

    6 months ago

  • License

    MPL-2.0
Secure secret management platform with public key encryption, automated rotation, versioning, and real-time collaboration tools for development teams.

Open Source Alternative to:

Favicon of 1Password
1Password
Favicon of Bacalhau

Bacalhau

Revolutionizing data processing with Compute Over Data

  • Stars

    874

  • Last commit

    3 days ago

  • License

    Apache-2.0
Bacalhau is an open-source platform for fast, cost-effective, and secure distributed computing, seamlessly integrating with Docker and WebAssembly workflows.
Favicon of Cossistant

Cossistant

AI
AI-native support infrastructure for modern SaaS

  • Stars

    733

  • Last commit

    27 days ago

  • License

    AGPL-3.0
Open-source support platform combining AI and human agents. React components with shadcn/ui design philosophy, styled with Tailwind CSS for NextJS apps.

Open Source Alternative to:

Favicon of LiveChat
LiveChat
Favicon of Argos

Argos

Visual regression testing for seamless UI development

  • Stars

    640

  • Last commit

    7 hours ago

  • License

    MIT
Automate visual testing, catch UI bugs early, and collaborate effortlessly with your team to maintain pixel-perfect interfaces.

Open Source Alternative to:

Favicon of Chromatic
Chromatic
Favicon of Nordcraft

Nordcraft

Craft AAA web apps that delight your users

  • Stars

    491

  • Last commit

    3 hours ago

  • License

    Apache-2.0
Visual web development engine combining design and development tools. Build immersive, interactive web experiences with component-based framework, real-time collaboration, and powerful visual editor.

Open Source Alternative to:

Favicon of Framer
Framer
Favicon of Hive

Hive

Open-source GraphQL federation platform

  • Stars

    484

  • Last commit

    7 hours ago

  • License

    MIT
A fully open-source schema registry, analytics, and gateway for GraphQL federation and APIs

Open Source Alternative to:

Favicon of Apollo GraphQL
Apollo GraphQL
Favicon of Midori Browser

Midori Browser

Fast, secure, and privacy-focused web browsing

  • Stars

    407

  • Last commit

    19 hours ago

  • License

    MPL-2.0
Midori Browser is a lightweight, fast, and secure browser that protects users' privacy, available for Windows, Linux, and Android.

Open Source Alternative to:

Favicon of Firefox
Firefox
Favicon of Storyden

Storyden

Build lasting communities with modern forum technology

  • Stars

    339

  • Last commit

    4 hours ago

  • License

    MPL-2.0
Create permanent, discoverable communities with modern forum features. Combines discussion, curation, and wiki functionality in one platform.

Open Source Alternative to:

Favicon of Skool
Skool
Favicon of Impler

Impler

Seamless data import for your applications

  • Stars

    295

  • Last commit

    1 month ago

  • License

    MIT
Open-source solution for effortless data importing, mapping, and validation in web applications
Favicon of Darkwrite

Darkwrite

Distraction-free note-taking with powerful features

  • Stars

    314

  • Last commit

    5 hours ago

  • License

    AGPL-3.0
A customizable, offline-first note editor that lets you format text, create lists, add images, and export to HTML - all while maintaining your privacy.

Open Source Alternative to:

Favicon of Notion
Notion
Favicon of Typerelay

Typerelay

Turn short shortcuts into your everyday words

  • Stars

    42

  • Last commit

    2 days ago

  • License

    AGPL-3.0
Text expander that replaces typed abbreviations with saved replies, signatures, and snippets across macOS, Windows, and Linux.

Open Source Alternative to:

Favicon of PhraseExpress
PhraseExpress
Favicon of Spanlens

Spanlens

AI
LLM observability: cost, latency, and traces in one place

  • Stars

    13

  • Last commit

    3 days ago

  • License

    MIT
Drop-in observability platform for OpenAI, Anthropic, and Gemini that logs every request, tracks costs, traces agent workflows, and flags anomalies and PII.

Open Source Alternative to:

Favicon of LangSmith
LangSmith
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