Top Open Source Projects using Next.js

A curated collection of the 166 best open source software using Next.js. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.

Dify

An open source platform for building LLM applications, combining visual workflows, RAG pipelines, agents and model management in one interface.

Alternative to:

Voiceflow

Build and deploy AI agents and RAG pipelines visually

Stars
154,658
Forks
24,446
Last commit
5 days ago

Excalidraw

An open source virtual whiteboard for hand-drawn style diagrams and wireframes, collaborative, end-to-end encrypted and embeddable as an npm package.

Alternative to:

Lucidchart

Collaborative whiteboard with a hand-drawn aesthetic

Stars

LobeChat

Open source workspace for hiring, scheduling and supervising a team of AI agents that keeps working while you are away.

Alternative to:

ChatGPT

Manage, build, and run AI agent teams around the clock

Stars
82,296

Orca

Desktop orchestrator that runs several terminal coding agents side by side, each in its own git worktree, tracked in one window.

Alternative to:

Cursor

Run multiple AI coding agents in parallel, side by side

Cline

Open source coding agent that works in VS Code, JetBrains IDEs, the terminal and a kanban board, with any model you choose.

Alternative to:

Cursor

Open-source AI coding agent for your editor and terminal

Stars
67,589

Mem0

A memory layer that lets AI assistants and agents remember user preferences and past sessions instead of restarting context every conversation.

Alternative to:

Supermemory

Persistent memory layer for AI agents and apps

Stars
64,804

LiteLLM

An open source gateway exposing more than a hundred LLM providers behind one OpenAI-compatible interface, for teams centralising model access.

Alternative to:

Cloudflare AI Gateway

LLM gateway for auth, load balancing, and spend tracking

Stars

Multica

A self-hostable workspace where AI coding agents are assigned issues like teammates, for engineering teams running several agent CLIs at once.

Alternative to:

Jira

Project management for teams mixing humans and AI agents

Twenty

A CRM whose objects, views and workflows are defined as code, aimed at technical teams that outgrow configurable SaaS tools.

Alternative to:

HubSpot

Build a custom CRM without the proprietary lock-in

Stars
56,365

Cal.com

A self-hosted scheduling platform for booking pages and meeting links, built for individuals who want no commercial dependencies.

Alternative to:

Acuity Scheduling

Self-host your own scheduling page, no vendor required

Stars

Tldraw

A React SDK for building infinite canvas apps, shipping a whiteboard out of the box and custom shapes when you need them.

Alternative to:

Miro

Free instant whiteboard with real-time collaboration

Stars
50,179

Open-Notebook

A self-hosted research notebook and Notebook LM alternative for people who want to pick their own AI models and keep sources private.

Alternative to:

NotebookLM

AI-powered research notebook with full privacy control

Stars

Jan

Desktop app for downloading and running open source LLMs locally, with optional cloud model access and an OpenAI compatible local server.

Alternative to:

ChatGPT

Run AI models locally or connect to cloud, privately

Stars
44,366

Payload

Next.js native headless CMS that installs into an existing app folder, giving developers a TypeScript backend and an extensible React admin.

Alternative to:

Contentful

Headless CMS for developers, built with Node.js

Stars
44,601

Dokploy

Self-hostable platform as a service that deploys applications and databases on your own VPS, with Docker Swarm and Traefik underneath.

Alternative to:

Vercel

Effortless deployment and management for any VPS

Stars
37,131

Postiz

Self-hostable social media scheduling tool with analytics, team collaboration and an API, covering platforms like X, Bluesky, Mastodon and Discord.

Alternative to:

Buffer

Schedule, analyze, and manage 30+ social media accounts

Stars
35,562

CopilotKit

SDK for developers building agent-native apps, adding chat, generative UI, shared state and human-in-the-loop across web, mobile and chat platforms.

Alternative to:

Voiceflow

Build AI copilots for your product in hours, not months

Stars

Continue

Coding agent for VS Code, JetBrains and the terminal, now shipped as a final version and no longer under active development.

Alternative to:

Cursor

Open-source coding agent for your IDE and terminal

Stars
35,812

Novu

Open-source communication infrastructure that sends product notifications and connects agents to Inbox, email, SMS, push, chat and messaging channels.

Alternative to:

OneSignal

Multi-channel notification infrastructure for apps

Stars
39,876

PostHog

Product analytics suite bundling events, session replays, feature flags, experiments, surveys and error tracking into one platform for product teams.

Alternative to:

Google Analytics

Unlock Product Insights with Open-Source Analytics

Stars

Langfuse

LLM engineering platform where teams trace, evaluate, debug and version-control the prompts and runs behind an AI application.

Alternative to:

LangSmith

Open source LLM engineering platform for AI-powered applications

Stars
34,268

Meetily

Meeting assistant that records, transcribes and summarizes conversations on your own machine, so no audio ever leaves your infrastructure.

Alternative to:

Granola

Local AI meeting transcription with zero data leaving your device

Stars
30,423

Medusa

Commerce platform with a customization framework for developers building B2B, DTC, marketplace or point of sale storefronts.

Alternative to:

Shopify

Open-source e-commerce for modern developers

Stars
36,164

FastGPT

AI agent building platform with knowledge bases and visual workflow orchestration, for teams shipping retrieval backed assistants without writing glue code.

Alternative to:

Voiceflow

Build powerful AI knowledge bases with ease

Stars
29,591

Onyx

Self-hosted AI platform that connects company data to chat, search and agents, for teams wanting an LLM interface they control.

Alternative to:

ChatGPT

Unified AI-powered enterprise search across company data

Stars
31,948

Kilo

Open source AI coding agent for VS Code, JetBrains and the terminal, with 500 plus models billed at provider rates.

Alternative to:

Cursor

AI coding agent for VS Code, JetBrains, CLI, and Cloud

Stars
27,201

Khoj

Personal AI app that searches your documents and the web, running on your own machine or scaling to a team deployment.

Alternative to:

ChatGPT

AI second brain for research, automation, and personal agents

Stars
37,161

Better Auth

Framework-agnostic authentication and authorization library for TypeScript, for developers who need more than a login form without paying a vendor.

Alternative to:

Auth0

Framework-agnostic authentication for TypeScript applications

Stars

Refine

React meta-framework for CRUD-heavy applications, giving teams building admin panels, dashboards and internal tools a headless foundation.

Alternative to:

Retool

Build data-rich React apps with ease and flexibility

Stars
35,639

Tabby

Self-hosted AI coding assistant that runs on consumer GPUs, an on-premises alternative for teams that cannot send code to a cloud.

Alternative to:

Cursor

AI-powered code completion for seamless development

Stars
33,869

Karakeep

A self-hosted bookmarking app for links, notes, images and PDFs, with automatic AI tagging, full page archival and mobile clients.

Alternative to:

Raindrop.io

Save links, notes, and images. AI tags them for you.

Stars
28,873

Chroma

An embeddings database for AI applications, with an API of four functions and an in-memory mode that needs no server.

Alternative to:

Pinecone

Open-source vector database for AI search and retrieval

Stars
29,239

OpenWork

A desktop app and MCP server for sharing AI skills, plugins and connected services across your agents, teammates and machines.

Alternative to:

OpenAI Codex

Multi-model AI workspace with org-wide skill sharing

Ente

End-to-end encrypted cloud platform behind photo, document and two-factor apps, for anyone who would rather not trust a provider.

Alternative to:

Apple iCloud Photos

Secure, private photo storage and sharing solution

Stars
28,696

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Top Open Source Projects using Next.js

A curated collection of the 166 best open source software using Next.js. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.

Dify

Excalidraw

LobeChat

Orca

Cline

Mem0

LiteLLM

Multica

Twenty

Cal.com

Tldraw

Open-Notebook

Jan

Payload

Dokploy

Postiz

CopilotKit

Continue

Novu

PostHog

Langfuse

Meetily

Medusa

FastGPT

Onyx

Kilo

Khoj

Better Auth

Refine

Tabby

Karakeep

Chroma

OpenWork

Ente

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