Open Source Business Software

A curated collection of the best free and open source software for running a company, from the sales pipeline and the invoices to support, hiring and everything in between.

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
134,677
Forks
15,864
Last commit
24 hours ago

AppFlowy

AI workspace for notes, wikis and projects that keeps your data on your own machine or server, an alternative to Notion.

Alternative to:

Notion

AI workspace for docs, projects, and wikis you control

Stars
77,846

Affine

An all-in-one workspace merging documents, whiteboards and databases, built local-first for teams that want to own their knowledge base.

Alternative to:

Notion

Docs, whiteboards, and databases in one privacy-first workspace

Stars
73,918

Odoo

Suite of open source business apps covering CRM, accounting, inventory, manufacturing and more, usable alone or as a full ERP.

Alternative to:

Salesforce

All-in-one business platform covering ERP, CRM, and more

Stars
55,380

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
59,953

Plane

Open source project management covering work items, cycles, modules and roadmaps, for teams that want to self-host their tracker.

Alternative to:

Asana

Project management for teams and AI agents

Stars
61,571

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
49,444

Buzz

Self-hostable workspace where people and AI agents share the same channels, built on a Nostr relay with a signed event log.

Alternative to:

Slack

Team chat, project management, and AI agents in one place

Stars
36,523

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
51,120

Rocket.Chat

A self-hosted communications platform for organizations with strict data protection needs, covering messaging, voice, federation and customer conversations.

Alternative to:

Slack

Self-hosted team messaging with voice, video, and AI

Stars
46,343

Hyperswitch

Modular payments infrastructure that routes transactions across more than 120 processors, for teams that want to own their payment stack.

Alternative to:

Dodo Payments

Open source payment orchestrator for global transactions

Stars
45,421

Paperless-ngx

Document management system that turns scanned paper into a searchable archive, maintained by a community team as the successor to Paperless.

Alternative to:

DocuWare

Effortlessly organize your digital documents

Stars
47,170

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
39,560

ERPNext

Free open-source ERP covering accounting, orders, manufacturing, assets and projects for businesses that would otherwise buy each module separately.

Alternative to:

Microsoft Dynamics 365

Comprehensive business management, tailored for you

Stars
40,684

Chatwoot

Self-hosted support desk that unifies live chat, email and social messaging in one inbox, with an AI agent and help center.

Alternative to:

Zendesk

Omnichannel customer support with a built-in AI assistant

Stars
38,455

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
40,214

Mattermost

Self-hosted collaboration platform with chat, workflow automation, voice calling and screen sharing for teams that must control their own deployment.

Alternative to:

Slack

Secure collaboration platform for mission-critical work

Stars
39,454

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
36,975

Nextcloud

Self-hosted platform for files, contacts and calendars, giving organizations and individuals a place to store and share data on their own server.

Alternative to:

Dropbox

Secure cloud collaboration platform for organizations

Stars
37,321

Zulip

Team chat organized by topic inside each channel, built for distributed teams that mix live conversation with asynchronous catch-up.

Alternative to:

Slack

Organized team chat for distributed teams

Stars
26,125

Jitsi

A set of open source projects for running video conferences in the browser, self-hosted or on a free public instance.

Alternative to:

Microsoft Teams

Private, secure video calls with no account needed

Stars
30,157

Anki

A spaced repetition flashcard program that schedules each card for the moment you are about to forget it, across desktop, mobile and web.

Alternative to:

Brainscape

Spaced repetition flashcards that remember for you

Stars
32,347

Huly

Framework and application suite covering chat, project management, CRM, HRM and recruitment, self-hostable by teams wanting one workspace.

Alternative to:

Notion

All-in-one workspace for project, chat, and docs

Stars
28,002

Bagisto

Laravel and Vue.js eCommerce platform for single-vendor stores, B2B commerce and multi-vendor marketplaces on a customizable foundation.

Alternative to:

Shopify

Open source Laravel eCommerce platform for modern businesses

Stars
28,284

GitLab

Git repository management with code review, CI/CD, issue tracking and wikis, run on their own infrastructure by large organizations.

Alternative to:

Jira

AI-powered DevSecOps for faster, secure software delivery

Stars
24,546

Saleor

A GraphQL-native, API-only commerce backend for teams building custom storefronts across channels, currencies, warehouses and languages.

Alternative to:

Shopify

Flexible e-commerce platform for modern businesses

Stars
23,485

Listmonk

A self-hosted newsletter and mailing list manager that ships as one binary and stores everything in PostgreSQL.

Alternative to:

Mailchimp

Self-hosted newsletter and mailing list manager

Stars
24,011

Krayin

A Laravel and Vue CRM framework for small businesses and enterprises that want to own and extend customer lifecycle management.

Alternative to:

HubSpot

Self-hosted CRM for enhanced business relationships

Stars
24,071

Teable

A PostgreSQL-backed database that works like a spreadsheet, with AI chat and an app builder, for teams building internal tools.

Alternative to:

Coda

Flexible database meets intuitive spreadsheet interface

Stars
21,932

Super Productivity

Todo app with timeboxing and time tracking that imports tasks from calendars, Jira and GitHub, for people juggling several systems.

Alternative to:

Toggl Track

Task manager built for deep work, privacy, and focus

Stars
23,200

Docuseal

Open source document filling and signing platform for creating PDF forms and having them completed online on any device.

Alternative to:

Adobe Acrobat Sign

Legally binding document signing for individuals and teams

Stars
18,860

Wekan

Self-hosted kanban board for personal lists and team projects, for anyone who wants a visual board without handing over their data.

Alternative to:

Asana

Visual project management with complete data control

Stars
21,143

Billion Mail

Self-hosted mail server and email marketing platform for businesses that want to send newsletters and campaigns without a third-party provider.

Alternative to:

Mailgun

Open-source mail server with unlimited sending & AI tools

Stars
15,961

Documenso

Self-hostable document signing platform for anyone who wants to run the signing tool rather than trust a provider.

Alternative to:

Adobe Acrobat Sign

Secure, open-source document signing for everyone

Stars
15,589

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Open Source Business Software

A curated collection of the best free and open source software for running a company, from the sales pipeline and the invoices to support, hiring and everything in between.

Excalidraw

AppFlowy

Affine

Odoo

Twenty

Plane

Cal.com

Buzz

Tldraw

Rocket.Chat

Hyperswitch

Paperless-ngx

Postiz

ERPNext

Chatwoot

Novu

Mattermost

Medusa

Nextcloud

Zulip

Jitsi

Anki

Huly

Bagisto

GitLab

Saleor

Listmonk

Krayin

Teable

Super Productivity

Docuseal

Wekan

Billion Mail

Documenso

Excalidraw

AppFlowy

Affine

Odoo

Twenty

Plane

Cal.com

Buzz

Tldraw

Rocket.Chat

Hyperswitch

Paperless-ngx

Postiz

ERPNext

Chatwoot

Novu

Mattermost

Medusa

Nextcloud

Zulip

Jitsi

Anki

Huly

Bagisto

GitLab

Saleor

Listmonk

Krayin

Teable

Super Productivity

Docuseal

Wekan

Billion Mail

Documenso

OpenBB