Best Open Source CRM Software in 2026 (Free & Self-Hosted)

A CRM holds your most valuable business asset — your customer relationships — so handing it to a vendor that charges per seat and owns your data is a bigger deal than most SaaS. Open source CRM flips that: run it on your own server, pay nothing per user, customize it to your exact sales process, and keep every contact and deal under your control.

This guide ranks the best open source CRM software in 2026 — free, self-hostable alternatives to Salesforce, HubSpot and Pipedrive. We compare them by features, community size (live GitHub stars), and the use case each one fits best.

TL;DR — the short answer

• Best modern CRM (Salesforce alternative) → Twenty — sleek, developer-friendly, fast-growing.
• Best all-in-one (CRM + ERP) → ERPNext — CRM plus accounting, HR and operations.
• Best classic full-featured CRM → SuiteCRM — the mature, battle-tested standard.
• Best lightweight CRM → EspoCRM — fast, clean, easy to self-host.
• Best personal CRM → Monica — remember everything about the people in your life.

Key takeaways

Why an open source CRM?

• No per-seat pricing. Add unlimited users without your bill scaling — the biggest cost saving over Salesforce/HubSpot.
• You own your data. Customer records, deals and pipelines live on your infrastructure, not a vendor's cloud.
• Full customization. Reshape fields, workflows and automations to match how your team actually sells — and extend the code if you need to.
• No lock-in. Export, migrate, or self-host forever; nothing is held hostage behind a subscription.

The trade-off is the usual one: you (or your team) host and maintain it. For data-sensitive businesses and anyone tired of per-seat pricing, that's a trade worth making.

How we evaluated

• Adoption — GitHub stars, pulled live from our directory (a proxy for community and longevity).
• Maintenance — recency of the last commit; everything here was updated in 2026.
• Feature fit — does it cover contacts, deals, pipelines, automation, and the extras your use case needs?
• Best-for — the scenario each CRM nails, from startups to enterprises to personal use.

Quick comparison

The best open source CRM software, ranked

1. Twenty — the modern Salesforce alternative

Best for: teams that want a sleek, modern CRM that feels like a 2026 SaaS product. Skip if: you need decades of enterprise features and plugins today (SuiteCRM is more mature).

Twenty is the fastest-rising open source CRM — a modern, beautifully designed alternative to Salesforce built for the way teams work now. Customizable objects, a clean pipeline UI, and a developer-friendly architecture make it the standout new entrant, reflected in its rapid climb to 46K stars.

• Key features: customizable data model · kanban & table views · pipelines · keyboard-first UX · API & webhooks
• Pros: genuinely modern UI · rapid development & momentum · developer-friendly
• Cons: younger than legacy CRMs — fewer prebuilt integrations (for now)
• Stars: 46K · Language: TypeScript · Last updated: 2026-05
• 🔗 Details & alternatives →

2. ERPNext — CRM plus full operations

Best for: businesses that want CRM alongside accounting, inventory, HR and projects. Skip if: you only need a focused sales CRM (this is a full ERP).

ERPNext is a complete open source ERP with a capable CRM module built in. If you want one system for sales and the rest of your operations — invoicing, inventory, HR, manufacturing — ERPNext replaces a whole stack of SaaS tools with a single self-hosted platform.

• Key features: CRM + accounting + inventory + HR + projects · workflows · reporting · self-hostable
• Pros: one platform for the whole business · mature and comprehensive · strong community
• Cons: heavier than a standalone CRM; more to learn and configure
• Stars: 33K · Language: Python · Last updated: 2026-04
• 🔗 Details & alternatives →

3. Chatwoot — support-driven customer engagement

Best for: teams whose "CRM" is really about customer conversations and support. Skip if: you need classic sales-pipeline management (Twenty/SuiteCRM fit better).

Chatwoot is an open source customer engagement platform — live chat, shared inbox, email, and omnichannel support with contact management built in. For support-led businesses, it's the open alternative to Intercom or Zendesk, keeping customer conversations and data on your own servers.

• Key features: live chat · shared inbox · omnichannel (email/social/WhatsApp) · contact management · automations
• Pros: excellent for support-driven relationships · omnichannel · self-hostable
• Cons: support-focused — not a full sales-pipeline CRM
• Stars: 29K · Language: Ruby · Last updated: 2026-04
• 🔗 Details & alternatives →

4. Monica — the personal CRM

Best for: managing personal relationships, not sales — friends, family, contacts. Skip if: you need a business sales CRM.

Monica is a personal CRM: a private place to remember the details of the people in your life — birthdays, conversations, how you met, what matters to them. It's a delightfully different take on "CRM," self-hosted so your personal relationship data stays entirely yours.

• Key features: contact journaling · reminders · relationship notes · activity logging · self-hostable
• Pros: unique and genuinely useful for personal life · private by design · pleasant UX
• Cons: not built for business sales/pipeline use
• Stars: 25K · Language: PHP · Last updated: 2026-04
• 🔗 Details & alternatives →

5. Krayin (Laravel CRM) — a modern SMB CRM

Best for: small and medium businesses, especially Laravel/PHP shops. Skip if: you're not on the PHP/Laravel stack and want something else.

Krayin is a free, open source CRM built on Laravel, aimed at small and medium businesses. Leads, contacts, a clean pipeline and an extensible codebase make it a solid choice for teams that want a modern CRM they can customize in a familiar framework.

• Key features: lead & contact management · sales pipeline · email · workflows · Laravel-based extensibility
• Pros: modern UI · easy to extend for PHP developers · SMB-focused
• Cons: smaller ecosystem than the biggest players
• Stars: 22K · Language: PHP · Last updated: 2026-04
• 🔗 Details & alternatives →

6. IDURAR — ERP/CRM with invoicing

Best for: small businesses wanting CRM plus invoicing and accounting in one. Skip if: you want a pure sales CRM without the ERP side.

IDURAR is an open source ERP/CRM focused on invoicing, accounting and customer management for small businesses. It's a lightweight, modern take on running the money-and-customers side of a business from a single self-hosted app.

• Key features: CRM · invoicing & quotes · accounting · customer management · modern stack
• Pros: combines CRM with invoicing/accounting · clean modern UI · easy to self-host
• Cons: smaller feature set than full ERPs like ERPNext
• Stars: 8K · Language: JavaScript · Last updated: 2026-04
• 🔗 Details & alternatives →

7. Dolibarr — SMB ERP/CRM suite

Best for: small businesses wanting a modular ERP/CRM they can grow into. Skip if: you want the most modern UI (Dolibarr is functional over flashy).

Dolibarr is a long-established, modular ERP/CRM suite for small and medium businesses. Turn on just the modules you need — CRM, invoicing, inventory, HR — and expand over time. Its maturity and modularity make it a dependable, no-lock-in choice.

• Key features: modular CRM/ERP · invoicing · inventory · projects · large module ecosystem
• Pros: very mature and stable · pick-your-modules flexibility · big community
• Cons: interface feels more utilitarian than modern CRMs
• Stars: 7K · Language: PHP · Last updated: 2026-04
• 🔗 Details & alternatives →

8. SuiteCRM — the classic full-featured CRM

Best for: businesses that want a mature, comprehensive CRM with a proven track record. Skip if: you prefer a lightweight, modern-feeling app (try Twenty or EspoCRM).

SuiteCRM is the veteran open source CRM — a full-featured, enterprise-capable platform covering leads, opportunities, quotes, campaigns and reporting. Consistently recommended as the open source CRM for businesses that need depth and a mature ecosystem.

• Key features: leads & opportunities · quotes & contracts · campaigns · reporting · workflow automation
• Pros: comprehensive and battle-tested · strong community · enterprise-ready
• Cons: the UI shows its age compared to newer entrants
• Stars: 5K · Language: PHP · Last updated: 2026-04
• 🔗 Details & alternatives →

9. EspoCRM — lightweight and fast

Best for: teams that want a clean, fast CRM without ERP bloat. Skip if: you need built-in accounting/operations (ERPNext/Dolibarr).

EspoCRM is a lightweight, fast open source CRM with a clean interface and a flexible, customizable data model. It hits a sweet spot: more polished than the old guard, more focused than the ERPs — easy to self-host and pleasant to use day to day.

• Key features: contacts & accounts · sales pipeline · custom entities · workflows · portal · self-hostable
• Pros: fast and clean · highly customizable · easy to deploy
• Cons: smaller integration marketplace than the largest CRMs
• Stars: 3K · Language: PHP · Last updated: 2026-04
• 🔗 Details & alternatives →

How to choose

Match the CRM to your situation:

• You want a modern, sales-focused CRM → Twenty leads the pack, with EspoCRM as a lightweight runner-up.
• You want CRM as part of running the whole business → ERPNext (comprehensive) or Dolibarr/IDURAR (lighter).
• Your relationships are support conversations → Chatwoot.
• You need maximum maturity and features → SuiteCRM.
• It's personal, not business → Monica.

Start by writing down your must-have workflow (leads → deals → close, or support inbox, or full operations), then pick the one that models it most naturally.

Frequently asked questions

What is the best open source CRM in 2026? For most teams wanting a modern sales CRM, Twenty is the standout. For a mature, full-featured classic, SuiteCRM. For CRM plus full business operations, ERPNext. The best choice depends on whether you want a focused sales tool, an all-in-one ERP, or something support-led.

Is there a free open source alternative to Salesforce? Yes — Twenty is explicitly built as a modern Salesforce alternative, and SuiteCRM, EspoCRM and ERPNext all cover core Salesforce use cases. All are free to self-host with no per-seat pricing.

Are open source CRMs really free? Yes. Every CRM here is free to download and self-host. Some offer paid cloud-hosted plans or enterprise support, but the core software is free and you pay no per-user license.

Can a small business self-host a CRM easily? Yes. Lightweight options like EspoCRM, Twenty and Krayin are straightforward to deploy with Docker. You'll need a small server and someone comfortable with basic maintenance and backups.

What's the difference between an open source CRM and an ERP? A CRM focuses on customer relationships — leads, contacts, deals, pipelines. An ERP (like ERPNext or Dolibarr) covers the whole business including accounting, inventory and HR, with CRM as one module. Choose a CRM for sales focus; an ERP if you want to run operations too.

The bottom line

An open source CRM gives you your customer data back, kills per-seat pricing, and lets you shape the tool around your process. Start with Twenty for a modern sales CRM, ERPNext if you want CRM plus operations, or SuiteCRM for a mature, feature-complete classic. All are free, self-hostable, and yours to control.

Browse open source alternatives to popular software, or explore the full directory of open source projects.