Open Source Projects using Vitest

A curated collection of the 216 best open source software using Vitest. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.

Cline

Open-source AI coding agent with frontier models

Stars
61,772
Forks
6,419
Last commit
10 hours ago

Open-source AI coding agent offering direct access to frontier models with complete transparency. Features Plan Mode, MCP integration, and zero vendor lock-in.

Open Source Alternative to:

Claude Code

Novu

The open source Inbox component and notification platform

Stars
38,976
Forks
4,288
Last commit
10 hours ago

A powerful, open-source notification infrastructure for developers to manage and send multi-channel notifications with ease.

Open Source Alternative to:

Customer.io

Postiz

AI-powered social media management platform

Stars
30,365
Forks
5,528
Last commit
16 hours ago

Postiz offers an all-in-one solution for scheduling posts, creating content, and analyzing performance across multiple social networks.

Open Source Alternative to:

HootSuite

Dub

Link management for modern marketing teams

Stars
23,540
Forks
2,993
Last commit
10 hours ago

The link management platform for modern marketing teams to create marketing campaigns, link sharing features, and referral programs.

Open Source Alternative to:

Bitly

Cap

Open source screen recording with instant sharing

Stars
18,945
Forks
1,523
Last commit
10 hours ago

Cross-platform screen recording tool with instant sharing, local editing, AI features, and custom S3 storage. Open source alternative to Loom.

Open Source Alternative to:

Loom

Parlant

Build compliant customer-facing AI agents with control

Stars
18,070
Forks
1,528
Last commit
13 hours ago

Conversational AI engine that keeps agents business-aligned and compliant as you scale. Build adaptive agents through feedback-driven development.

Open Source Alternative to:

Voiceflow

Plasmic

Visual builder that integrates with your codebase for unlimited app development

Stars
6,794
Forks
676
Last commit
24 hours ago

Build web apps, internal tools, and customer portals fast with visual editing, drag-and-drop design, and seamless codebase integration. Deploy anywhere without limits.

Open Source Alternative to:

Webflow

OpenPanel

Privacy-first analytics with powerful insights

Stars
5,747
Forks
360
Last commit
12 hours ago

Open-source web and product analytics platform combining Mixpanel's power with Plausible's simplicity. Cookie-less tracking, real-time data, and full data ownership.

Open Source Alternative to:

Google Analytics

Baserow

Build databases and apps without coding

Stars
4,826
Forks
597
Last commit
13 hours ago

Open-source no-code platform for creating databases, applications, and workflows. Self-host or use cloud. GDPR, HIPAA, SOC 2 compliant with unlimited scalability.

Open Source Alternative to:

Airtable

Probo

Open source compliance automation platform

Stars
1,078
Forks
162
Last commit
10 hours ago

A platform that simplifies compliance management with risk-based assessments, open-source frameworks, and vendor-independent automation.

Open Source Alternative to:

Vanta

AgentOS

Build production-ready autonomous AI agents with adaptive intelligence

Stars
327
Forks
10
Last commit
11 hours ago

Open-source TypeScript framework for autonomous AI agents with cognitive memory, multimodal RAG, multi-agent orchestration, and 21 LLM integrations. Type-safe alternative to LangGraph and CrewAI.

OpenClaw

AI assistant that actually executes tasks across platforms

Stars
371,848
Forks
76,969
Last commit
10 hours ago

Personal AI assistant that clears inboxes, sends emails, manages calendars, and checks in for flights. Works through WhatsApp, Telegram, and other chat apps.

Open Source Alternative to:

Zo Computer

n8n

AI-powered workflow automation for technical teams

Stars
187,838
Forks
57,624
Last commit
10 hours ago

A flexible automation platform combining AI capabilities with business process automation, offering both code-based and no-code options for technical teams.

Open Source Alternative to:

Make

Open WebUI

Extensible, self-hosted AI interface for your workflow

Stars
137,071
Forks
19,536
Last commit
22 hours ago

A customizable interface for AI that works offline, supporting Ollama and OpenAI-compatible APIs while adapting to your specific workflow needs.

Open Source Alternative to:

Claude

Excalidraw

Collaborative whiteboarding with a hand-drawn feel

Stars
123,210
Forks
13,646
Last commit
2 days ago

Excalidraw is a virtual whiteboard tool that allows teams to easily create and share sketches with a unique hand-drawn aesthetic.

Open Source Alternative to:

Miro

Supabase

Open-source Firebase alternative for modern app development

Stars
102,333
Forks
12,388
Last commit
10 hours ago

A powerful, scalable backend platform offering real-time databases, authentication, storage, and serverless functions for rapid development.

Open Source Alternative to:

Firebase

Immich

Self-hosted photo and video backup solution

Stars
100,563
Forks
5,591
Last commit
11 hours ago

Immich is an open-source, privacy-focused platform for managing and storing your personal photos and videos.

Open Source Alternative to:

Google Photos

LobeChat

Your personal AI assistant for enhanced productivity

Stars
77,075
Forks
15,171
Last commit
10 hours ago

LobeChat is an open-source AI chat platform that provides a customizable and feature-rich experience for interacting with AI assistants.

Open Source Alternative to:

Claude

OpenHands

Open-source platform for scalable cloud coding agents

Stars
73,520
Forks
9,288
Last commit
13 hours ago

Build and deploy autonomous coding agents at scale with model-agnostic, secure platform. Automate code reviews, testing, documentation, and complex refactoring tasks.

Open Source Alternative to:

Claude Code

Daytona

Lightning-fast AI code execution in secure sandboxes

Stars
72,440
Forks
5,569
Last commit
10 hours ago

Execute AI-generated code safely with 90ms sandbox creation, isolated environments, and enterprise-grade security. Perfect for AI agents and development workflows.

Open Source Alternative to:

Modal

Hoppscotch

Sleek, intuitive API development and testing platform

Stars
79,186
Forks
5,870
Last commit
10 hours ago

Lightweight, fast, and feature-rich API client for developers. Test, debug, and document APIs with ease in a clean, modern interface.

Open Source Alternative to:

Postman

Affine

Collaborative knowledge creation and management platform

Stars
68,381
Forks
4,847
Last commit
10 hours ago

All-in-one workspace for note-taking, whiteboarding, and task management with real-time collaboration and local-first architecture.

Open Source Alternative to:

Notion

Strapi

Craft and manage content with ease and flexibility

Stars
72,167
Forks
9,712
Last commit
14 hours ago

A powerful headless CMS that enables developers to build, deploy, and manage content-rich applications with customizable APIs and a user-friendly admin panel.

Open Source Alternative to:

Sanity

NocoDB

Transform databases into intuitive spreadsheets instantly

Stars
63,044
Forks
4,767
Last commit
13 hours ago

Convert any database into a no-code platform with spreadsheet interface. Connect PostgreSQL/MySQL or use hosted database. Scale to millions of rows effortlessly.

Open Source Alternative to:

Airtable

Cherry Studio

Multi-platform AI client with unified model management

Stars
45,661
Forks
4,336
Last commit
13 hours ago

Powerful AI assistant supporting iOS, macOS, and Windows. Switch between multiple LLM models seamlessly with local data storage and personalized knowledge base.

Open Source Alternative to:

Claude

Twenty

Streamline customer relationships with modern CRM

Stars
45,800
Forks
6,414
Last commit
10 hours ago

Open-source CRM platform for efficient customer data management, collaboration, and relationship nurturing

Open Source Alternative to:

HubSpot

Gitea

Self-hosted Git service for seamless collaboration

Stars
55,677
Forks
6,696
Last commit
15 hours ago

A lightweight, fast, and customizable Git service that simplifies code hosting and collaboration for teams of all sizes.

Open Source Alternative to:

GitHub

Cal.com

Customizable scheduling that works the way you do

Stars
42,507
Forks
13,229
Last commit
5 days ago

Fully customizable scheduling software for individuals, teams, and developers. Connect calendars, set availability, accept payments, and integrate with your favorite apps.

Open Source Alternative to:

Calendly

Ghost

Modern publishing platform for creators and businesses

Stars
52,792
Forks
11,549
Last commit
10 hours ago

Powerful, flexible content management system with built-in SEO, memberships, and monetization features for professional publishing.

Open Source Alternative to:

WordPress

Jan

Your AI-powered local assistant for seamless productivity

Stars
42,515
Forks
2,856
Last commit
12 hours ago

A powerful, open-source AI chat interface that runs locally, offering privacy, customization, and seamless integration with your workflow.

Open Source Alternative to:

Claude

OpenScreen

Create stunning screen recordings with zoom effects & annotations

Stars
36,161
Forks
2,466
Last commit
4 days ago

Free, open-source screen recording tool with professional zoom effects, annotations, and beautiful backgrounds. No account required, perfect for demos.

Open Source Alternative to:

Loom

Puter

Your personal cloud for files, apps, and games

Stars
41,270
Forks
3,751
Last commit
19 hours ago

Puter is a privacy-focused personal cloud platform that securely stores your files, apps, and games, accessible from anywhere.

Open Source Alternative to:

Google Drive

Mastodon

Decentralized social networking in your control

Stars
49,950
Forks
7,438
Last commit
11 hours ago

A free, open-source social media platform that puts users in charge of their data and connections

Open Source Alternative to:

Facebook

Tldraw

Free instant collaborative whiteboarding for all devices

Stars
47,030
Forks
3,211
Last commit
17 hours ago

Create, collaborate, and brainstorm instantly with this free virtual whiteboard. No signup needed. Works seamlessly on mobile, tablet, and desktop devices.

Open Source Alternative to:

Miro

Discourse

Cultivate vibrant online communities with ease

Stars
47,021
Forks
8,913
Last commit
10 hours ago

A powerful, customizable platform for building and managing online forums, fostering engaging discussions and collaborative spaces.

Open Source Alternative to:

Skool

Payload

Headless CMS for developers, built with Node.js

Stars
42,390
Forks
3,712
Last commit
10 hours ago

A powerful, flexible, and developer-friendly content management system that prioritizes customization and scalability.

Open Source Alternative to:

WordPress

Penpot

Design freedom meets open-source collaboration

Stars
47,538
Forks
2,943
Last commit
10 hours ago

Versatile design and prototyping platform for teams. Create, collaborate, and bring your ideas to life with powerful vector editing tools.

Open Source Alternative to:

Canva

Continue

AI-powered code assistant for amplified development

Stars
33,182
Forks
4,506
Last commit
10 hours ago

Open-source AI code assistant that connects models and context to build custom autocomplete and chat experiences inside your IDE.

Open Source Alternative to:

Claude Code

Dokploy

Effortless deployment and management for any VPS

Stars
33,983
Forks
2,458
Last commit
2 days ago

Streamline your deployment process with Dokploy. Manage applications and databases on any VPS using Docker and Traefik for improved performance and security.

Open Source Alternative to:

Vercel

CopilotKit

Build AI copilots for your product in hours, not months

Stars
31,400
Forks
4,058
Last commit
10 hours ago

Integrate production-ready AI copilots into any product quickly and easily with CopilotKit's open-source platform.

Open Source Alternative to:

LangChain

LosslessCut

Cut video & audio files in seconds without quality loss

Stars
40,423
Forks
1,955
Last commit
5 days ago

Fast lossless video and audio editor that trims, cuts, and merges files instantly without re-encoding. Save hours of processing time while maintaining perfect quality.

Open Source Alternative to:

CapCut

Tabby

AI-powered code completion for seamless development

Stars
33,513
Forks
1,744
Last commit
2 months ago

Self-hosted AI coding assistant that enhances productivity with context-aware suggestions and privacy-focused implementation.

Open Source Alternative to:

Claude Code

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

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Cline

Open-source AI coding agent with frontier models

Stars
61,772
Forks
6,419
Last commit
10 hours ago

Open-source AI coding agent offering direct access to frontier models with complete transparency. Features Plan Mode, MCP integration, and zero vendor lock-in.

Open Source Alternative to:

Claude Code

Novu

The open source Inbox component and notification platform

Stars
38,976
Forks
4,288
Last commit
10 hours ago

A powerful, open-source notification infrastructure for developers to manage and send multi-channel notifications with ease.

Open Source Alternative to:

Customer.io

Postiz

AI-powered social media management platform

Stars
30,365
Forks
5,528
Last commit
16 hours ago

Postiz offers an all-in-one solution for scheduling posts, creating content, and analyzing performance across multiple social networks.

Open Source Alternative to:

HootSuite

Dub

Link management for modern marketing teams

Stars
23,540
Forks
2,993
Last commit
10 hours ago

The link management platform for modern marketing teams to create marketing campaigns, link sharing features, and referral programs.

Open Source Alternative to:

Bitly

Cap

Open source screen recording with instant sharing

Stars
18,945
Forks
1,523
Last commit
10 hours ago

Cross-platform screen recording tool with instant sharing, local editing, AI features, and custom S3 storage. Open source alternative to Loom.

Open Source Alternative to:

Loom

Parlant

Build compliant customer-facing AI agents with control

Stars
18,070
Forks
1,528
Last commit
13 hours ago

Conversational AI engine that keeps agents business-aligned and compliant as you scale. Build adaptive agents through feedback-driven development.

Open Source Alternative to:

Voiceflow

Plasmic

Visual builder that integrates with your codebase for unlimited app development

Stars
6,794
Forks
676
Last commit
24 hours ago

Build web apps, internal tools, and customer portals fast with visual editing, drag-and-drop design, and seamless codebase integration. Deploy anywhere without limits.

Open Source Alternative to:

Webflow

OpenPanel

Privacy-first analytics with powerful insights

Stars
5,747
Forks
360
Last commit
12 hours ago

Open-source web and product analytics platform combining Mixpanel's power with Plausible's simplicity. Cookie-less tracking, real-time data, and full data ownership.

Open Source Alternative to:

Google Analytics

Baserow

Build databases and apps without coding

Stars
4,826
Forks
597
Last commit
13 hours ago

Open-source no-code platform for creating databases, applications, and workflows. Self-host or use cloud. GDPR, HIPAA, SOC 2 compliant with unlimited scalability.

Open Source Alternative to:

Airtable

Probo

Open source compliance automation platform

Stars
1,078
Forks
162
Last commit
10 hours ago

A platform that simplifies compliance management with risk-based assessments, open-source frameworks, and vendor-independent automation.

Open Source Alternative to:

Vanta

AgentOS

Build production-ready autonomous AI agents with adaptive intelligence

Stars
327
Forks
10
Last commit
11 hours ago

Open-source TypeScript framework for autonomous AI agents with cognitive memory, multimodal RAG, multi-agent orchestration, and 21 LLM integrations. Type-safe alternative to LangGraph and CrewAI.

OpenClaw

AI assistant that actually executes tasks across platforms

Stars
371,848
Forks
76,969
Last commit
10 hours ago

Personal AI assistant that clears inboxes, sends emails, manages calendars, and checks in for flights. Works through WhatsApp, Telegram, and other chat apps.

Open Source Alternative to:

Zo Computer

n8n

AI-powered workflow automation for technical teams

Stars
187,838
Forks
57,624
Last commit
10 hours ago

A flexible automation platform combining AI capabilities with business process automation, offering both code-based and no-code options for technical teams.

Open Source Alternative to:

Make

Open WebUI

Extensible, self-hosted AI interface for your workflow

Stars
137,071
Forks
19,536
Last commit
22 hours ago

A customizable interface for AI that works offline, supporting Ollama and OpenAI-compatible APIs while adapting to your specific workflow needs.

Open Source Alternative to:

Claude

Excalidraw

Collaborative whiteboarding with a hand-drawn feel

Stars
123,210
Forks
13,646
Last commit
2 days ago

Excalidraw is a virtual whiteboard tool that allows teams to easily create and share sketches with a unique hand-drawn aesthetic.

Open Source Alternative to:

Miro

Supabase

Open-source Firebase alternative for modern app development

Stars
102,333
Forks
12,388
Last commit
10 hours ago

A powerful, scalable backend platform offering real-time databases, authentication, storage, and serverless functions for rapid development.

Open Source Alternative to:

Firebase

Immich

Self-hosted photo and video backup solution

Stars
100,563
Forks
5,591
Last commit
11 hours ago

Immich is an open-source, privacy-focused platform for managing and storing your personal photos and videos.

Open Source Alternative to:

Google Photos

LobeChat

Your personal AI assistant for enhanced productivity

Stars
77,075
Forks
15,171
Last commit
10 hours ago

LobeChat is an open-source AI chat platform that provides a customizable and feature-rich experience for interacting with AI assistants.

Open Source Alternative to:

Claude

OpenHands

Open-source platform for scalable cloud coding agents

Stars
73,520
Forks
9,288
Last commit
13 hours ago

Build and deploy autonomous coding agents at scale with model-agnostic, secure platform. Automate code reviews, testing, documentation, and complex refactoring tasks.

Open Source Alternative to:

Claude Code

Daytona

Lightning-fast AI code execution in secure sandboxes

Stars
72,440
Forks
5,569
Last commit
10 hours ago

Execute AI-generated code safely with 90ms sandbox creation, isolated environments, and enterprise-grade security. Perfect for AI agents and development workflows.

Open Source Alternative to:

Modal

Hoppscotch

Sleek, intuitive API development and testing platform

Stars
79,186
Forks
5,870
Last commit
10 hours ago

Lightweight, fast, and feature-rich API client for developers. Test, debug, and document APIs with ease in a clean, modern interface.

Open Source Alternative to:

Postman

Affine

Collaborative knowledge creation and management platform

Stars
68,381
Forks
4,847
Last commit
10 hours ago

All-in-one workspace for note-taking, whiteboarding, and task management with real-time collaboration and local-first architecture.

Open Source Alternative to:

Notion

Strapi

Craft and manage content with ease and flexibility

Stars
72,167
Forks
9,712
Last commit
14 hours ago

A powerful headless CMS that enables developers to build, deploy, and manage content-rich applications with customizable APIs and a user-friendly admin panel.

Open Source Alternative to:

Sanity

NocoDB

Transform databases into intuitive spreadsheets instantly

Stars
63,044
Forks
4,767
Last commit
13 hours ago

Convert any database into a no-code platform with spreadsheet interface. Connect PostgreSQL/MySQL or use hosted database. Scale to millions of rows effortlessly.

Open Source Alternative to:

Airtable

Cherry Studio

Multi-platform AI client with unified model management

Stars
45,661
Forks
4,336
Last commit
13 hours ago

Powerful AI assistant supporting iOS, macOS, and Windows. Switch between multiple LLM models seamlessly with local data storage and personalized knowledge base.

Open Source Alternative to:

Claude

Twenty

Streamline customer relationships with modern CRM

Stars
45,800
Forks
6,414
Last commit
10 hours ago

Open-source CRM platform for efficient customer data management, collaboration, and relationship nurturing

Open Source Alternative to:

HubSpot

Gitea

Self-hosted Git service for seamless collaboration

Stars
55,677
Forks
6,696
Last commit
15 hours ago

A lightweight, fast, and customizable Git service that simplifies code hosting and collaboration for teams of all sizes.

Open Source Alternative to:

GitHub

Cal.com

Customizable scheduling that works the way you do

Stars
42,507
Forks
13,229
Last commit
5 days ago

Fully customizable scheduling software for individuals, teams, and developers. Connect calendars, set availability, accept payments, and integrate with your favorite apps.

Open Source Alternative to:

Calendly

Ghost

Modern publishing platform for creators and businesses

Stars
52,792
Forks
11,549
Last commit
10 hours ago

Powerful, flexible content management system with built-in SEO, memberships, and monetization features for professional publishing.

Open Source Alternative to:

WordPress

Jan

Your AI-powered local assistant for seamless productivity

Stars
42,515
Forks
2,856
Last commit
12 hours ago

A powerful, open-source AI chat interface that runs locally, offering privacy, customization, and seamless integration with your workflow.

Open Source Alternative to:

Claude

OpenScreen

Create stunning screen recordings with zoom effects & annotations

Stars
36,161
Forks
2,466
Last commit
4 days ago

Free, open-source screen recording tool with professional zoom effects, annotations, and beautiful backgrounds. No account required, perfect for demos.

Open Source Alternative to:

Loom

Puter

Your personal cloud for files, apps, and games

Stars
41,270
Forks
3,751
Last commit
19 hours ago

Puter is a privacy-focused personal cloud platform that securely stores your files, apps, and games, accessible from anywhere.

Open Source Alternative to:

Google Drive

Mastodon

Decentralized social networking in your control

Stars
49,950
Forks
7,438
Last commit
11 hours ago

A free, open-source social media platform that puts users in charge of their data and connections

Open Source Alternative to:

Facebook

Tldraw

Free instant collaborative whiteboarding for all devices

Stars
47,030
Forks
3,211
Last commit
17 hours ago

Create, collaborate, and brainstorm instantly with this free virtual whiteboard. No signup needed. Works seamlessly on mobile, tablet, and desktop devices.

Open Source Alternative to:

Miro

Discourse

Cultivate vibrant online communities with ease

Stars
47,021
Forks
8,913
Last commit
10 hours ago

A powerful, customizable platform for building and managing online forums, fostering engaging discussions and collaborative spaces.

Open Source Alternative to:

Skool

Payload

Headless CMS for developers, built with Node.js

Stars
42,390
Forks
3,712
Last commit
10 hours ago

A powerful, flexible, and developer-friendly content management system that prioritizes customization and scalability.

Open Source Alternative to:

WordPress

Penpot

Design freedom meets open-source collaboration

Stars
47,538
Forks
2,943
Last commit
10 hours ago

Versatile design and prototyping platform for teams. Create, collaborate, and bring your ideas to life with powerful vector editing tools.

Open Source Alternative to:

Canva

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AI-powered code assistant for amplified development

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33,182
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4,506
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10 hours ago

Open-source AI code assistant that connects models and context to build custom autocomplete and chat experiences inside your IDE.

Open Source Alternative to:

Claude Code

Dokploy

Effortless deployment and management for any VPS

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33,983
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2,458
Last commit
2 days ago

Streamline your deployment process with Dokploy. Manage applications and databases on any VPS using Docker and Traefik for improved performance and security.

Open Source Alternative to:

Vercel

CopilotKit

Build AI copilots for your product in hours, not months

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31,400
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4,058
Last commit
10 hours ago

Integrate production-ready AI copilots into any product quickly and easily with CopilotKit's open-source platform.

Open Source Alternative to:

LangChain

LosslessCut

Cut video & audio files in seconds without quality loss

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40,423
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1,955
Last commit
5 days ago

Fast lossless video and audio editor that trims, cuts, and merges files instantly without re-encoding. Save hours of processing time while maintaining perfect quality.

Open Source Alternative to:

CapCut

Tabby

AI-powered code completion for seamless development

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33,513
Forks
1,744
Last commit
2 months ago

Self-hosted AI coding assistant that enhances productivity with context-aware suggestions and privacy-focused implementation.

Open Source Alternative to:

Claude Code