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.

Papermark

A document sharing app with tracking analytics and custom domains, for teams that want to host their own DocSend replacement.

Alternative to:

DocSend

Open-source document sharing with powerful analytics

Stars
9,120
Forks
1,387
Last commit
14 days ago

OpenStatus

Status pages and uptime monitoring in one open source platform, for teams that would rather not wire two tools together.

Alternative to:

UptimeRobot

Status page and uptime monitoring for growing teams

Stars
9,072

Hanko

Authentication and user management server with passkeys, passwords, MFA and SAML SSO, built to avoid vendor lock-in.

Alternative to:

Auth0

Passkeys, SSO, and MFA without vendor lock-in

Stars
9,019

Mage

Self-hosted environment for building data pipelines locally in Python, SQL or R through a notebook-style interface.

Alternative to:

Fivetran

Magical data pipeline tool for seamless transformations

Stars
8,819

NHost

Open source Firebase alternative built on PostgreSQL, Hasura GraphQL, auth, storage and serverless functions for full-stack teams.

Alternative to:

AWS Amplify

Serverless backend platform for modern app development

Stars
9,287

Highlight

Fullstack monitoring for web teams, pairing session replay with error tracking, logs and traces behind a few lines of setup.

Alternative to:

Datadog

Real-time observability for modern web applications

Stars
9,372

Hatchet

Task orchestration for background jobs, AI agents and durable workflows, built on Postgres for teams that want to self-host.

Alternative to:

AWS Step Functions

Distributed task queue for background jobs and workflows

Stars

Builder

Visual editing for existing sites and apps, turning Figma files and your own components into code teams can publish.

Alternative to:

Contentful

Visual development platform for modern web experiences

Stars
8,823

GrowthBook

Feature flags, experimentation and product analytics on your own data warehouse, for teams that will not build the platform themselves.

Alternative to:

Amplitude

Open-source A/B testing and feature flagging platform

Stars
8,302

Hexclave

User infrastructure for product teams, bundling authentication, teams, payments, emails and analytics behind one shared user model.

Alternative to:

Auth0

Modular auth, payments, emails, and analytics for your product

Stars
6,854

Fonoster

A programmable telecommunications stack for developers who want voice applications and PBX features running on infrastructure they control themselves.

Alternative to:

Twilio

Open-source cloud communications platform for developers

Stars
8,099

Plasmic

A visual builder that plugs into an existing React codebase, letting marketers and developers assemble pages and apps without hitting a low-code ceiling.

Alternative to:

Contentful

Visual app builder that integrates with your existing codebase

Stars

Helicone

An AI gateway and observability platform that logs LLM requests, tracks cost and latency, and routes across providers for AI engineers.

Alternative to:

LangSmith

Build reliable AI apps with comprehensive observability

Stars
6,133

Mike

An open source legal AI platform for document review, drafting and case law research, aimed at firms that self-host.

Alternative to:

Hebbia

Open-source legal AI that law firms control and extend

Lingo.dev

Localization tooling for developers, translating strings and content files through a CLI, CI pipelines, an MCP server or a compiler.

Alternative to:

Crowdin

Automated translations that scale with your code and commits

Stars
5,401

Your Next Store (YNS)

A Next.js e-commerce template wired to Stripe, written for developers who let AI coding tools do much of the building.

Alternative to:

Shopify

Launch Your Store in Minutes, No Code Needed

Stars
5,486

Kan

An open source kanban board for teams that want Trello-style project management running on infrastructure they control.

Alternative to:

Asana

Open source kanban boards with unlimited everything

Stars
5,588

Rivet

A library for stateful backends where each agent, session, document or tenant runs as a long-lived actor with in-memory state.

Alternative to:

Azure Durable Functions

Build stateful backends with in-memory actors

Stars

UnKey

A source-available developer platform for API infrastructure, covering key issuance, rate limiting, gateways, permissions and usage analytics.

Alternative to:

Amazon API Gateway

Secure, scalable API key management for developers

Stars

Flagsmith

A feature flag, remote config and A/B testing platform for teams that want release control on their own infrastructure.

Alternative to:

LaunchDarkly

Feature flags and remote config for rapid deployment

Stars
6,539

ACI.dev

A tool-calling platform that connects AI agents to hundreds of services with managed authentication, permissions and dynamic tool discovery.

Alternative to:

Composio

Build reliable AI agents with unified tool integration

Stars
4,889

Inngest

A durable execution platform replacing queues, state management and scheduling so developers write reliable background jobs and workflows as code.

Alternative to:

AWS Step Functions

Effortless event-driven workflows for modern applications

Stars

Agenta

Open-source workspace where teams build agents by chatting with them, connect them to apps, and run them in the background.

Alternative to:

Lindy

Build, automate, and improve AI agents with your team

Stars
4,709

useSend

Open-source email sending platform built on Amazon SES, covering transactional mail, marketing campaigns, contacts and delivery analytics from a single dashboard.

Alternative to:

Mailgun

Pay per email sent, not for contact storage

Stars
4,659

Pipeshub

Open-source workplace AI platform that connects company knowledge across business systems and answers questions with citations, respecting each person's permissions.

Alternative to:

Coveo

Enterprise workplace AI with data you own and control

Stars

Jitsu

MIT-licensed event data platform that collects behavioral events and delivers them to warehouses and SaaS tools, a self-hostable Segment alternative.

Alternative to:

Fivetran

Open-source data integration for modern stacks

Stars
5,063

Erxes

Source-available experience operating system that unifies marketing, sales, operations and support in one self-hosted, plugin-based platform for growing businesses.

Alternative to:

HubSpot

Open-source growth platform for customer-centric teams

Stars
4,074

Rallly

Self-hostable group scheduling tool where participants vote on proposed dates, replacing the email back-and-forth of finding a meeting time.

Alternative to:

Doodle

Effortless group scheduling for seamless collaboration

Stars
5,248

Tracecat

Open source security automation platform combining agents, workflows, lookup tables and case management for security teams that prefer writing Python.

Alternative to:

Cortex XSOAR

Open source security automation platform for builders

Stars

Bknd

Lightweight backend giving you database, authentication, media and workflows behind a visual admin, deployable standalone or embedded in your framework.

Alternative to:

AWS Amplify

Feature-rich backend that runs anywhere you need it

Stars
3,756

Spliit

A free shared-expense tracker for friends, roommates and travelers who want to settle up without paying for an account.

Alternative to:

Splitwise

Effortlessly split expenses with friends and roommates

Stars
2,915

Autumn

A billing layer over Stripe that lets developers ship subscriptions, credits and usage-based pricing through three function calls instead of webhooks.

Alternative to:

Stripe Billing

Stripe payments, usage tracking, and paywalls in 3 functions

Stars

Dittofeed

Omni-channel customer engagement platform for developers who want automated user journeys, broadcasts and message templates they can self-host.

Alternative to:

Segment

Open-source customer engagement platform for automation

Stars
2,926

Open Mercato

Next.js foundation framework with ready-made CRM and ERP modules plus an AI harness that tells coding agents where code belongs.

Alternative to:

Salesforce

AI-native CRM/ERP foundation with 80% already built

Stars

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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.

Papermark

OpenStatus

Hanko

Mage

NHost

Highlight

Hatchet

Builder

GrowthBook

Hexclave

Fonoster

Plasmic

Helicone

Mike

Lingo.dev

Your Next Store (YNS)

Kan

Rivet

UnKey

Flagsmith

ACI.dev

Inngest

Agenta

useSend

Pipeshub

Jitsu

Erxes

Rallly

Tracecat

Bknd

Spliit

Autumn

Dittofeed

Open Mercato

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