CRM Picks

Best Open Source CRM (2026)

By WeekCRM editorial team · · Editorial policy & disclosures

The best open source CRMs in 2026 — self-hostable, source-available, and built for teams that need data sovereignty, deep customization, or simply don't want to pay per seat forever.

#1

SuiteCRM

CRM · Free open-source software; managed hosting from £50/mo; Quick Start setup from £2,520; Standard Support £1,200/yr

Open-source CRM with no per-user license fee. Run it on your own server for free, or pay for managed hosting from £50 per month, setup and support.

Visit SuiteCRM →
#2

Vtiger CRM

CRM · Free for up to 10 users (One Pilot); Growth $12/user/mo, Professional $30, Enterprise $42, AI $50 (annual)

CRM with sales, marketing and help desk modules and an open-source core, sold as cloud plans. For small and mid-size businesses that want one customer record across teams.

Visit Vtiger CRM →
#3

SugarAI

CRM · Sugar Sell Standard+ $68/user/mo, Advanced+ $98/user/mo, Premier+ $155/user/mo (annual); Connect+ add-on +$20/user/mo

B2B CRM suite for sales, marketing and service with AI that flags opportunities and deal risks. Aimed at sales teams that run ERP-connected accounts.

Visit SugarAI →
#4

Odoo Helpdesk

Help Desk · One App Free (one app, unlimited users); Standard $24.90, Custom $49 per user/mo (yearly)

Odoo Helpdesk is the ticketing app in Odoo, with kanban boards, SLA rules, email, web form and live chat intake, a knowledge base and support contracts linked to Odoo's sales and timesheet apps.

Visit Odoo Helpdesk →
#5

Zammad

Help Desk · Hosted: Starter €7, Professional €16, Plus €25 per agent/mo (annual); self-hosted support from €2,999/year

Open-source help desk (AGPLv3) that puts email, chat, phone, SMS, WhatsApp and social tickets in one queue. Self-hosted or hosted in Germany, for IT and support teams.

Visit Zammad →
#6

osTicket

Help Desk · Free (open source, self-hosted); hosted via SupportSystem: Basic $12, Standard $16, Premium $24 per agent/mo; 30-day trial

osTicket is an open-source support ticketing system with email, web form and API intake, ticket filters, help topics, SLAs and a customer portal. Hosted plans are sold through SupportSystem.

Visit osTicket →

How we picked

Open source CRMs solve three problems the proprietary market doesn't: data sovereignty (you host the data), per-seat economics that flatten (no $50/user/mo at 100 users), and deep customization for workflows that off-the-shelf tools can't model. Every pick below except SugarAI ships a real OSS license, an active community, and a path to production that doesn't require rebuilding the product. SugarAI is a commercial option included for teams that outgrow the rest.

What to consider

  • Best general-purpose open source CRM → SuiteCRM. It has been actively maintained for over a decade, ships modules for sales/marketing/service, and has a real partner ecosystem.
  • Best open source CRM with the broadest feature set → Vtiger. CRM, helpdesk, project management, and inventory in one self-hostable suite. Free Vtiger Open Source edition or paid cloud.
  • Best for teams that want a commercial path forward → SugarAI, formerly SugarCRM. It is a commercial B2B suite, not open source: Sugar Sell runs $68, $98 or $155 per user per month (annual) on Standard+, Advanced+ and Premier+. The AI flags opportunities and deal risks, and the platform integrates with 180+ ERP systems. Worth it for B2B sales teams with ERP-connected accounts; skip it if you want a flat low seat price or a free tier.
  • Best open source CRM bundled with ERP → Odoo. Modular open source platform — CRM is one of dozens of installable apps. The right answer if you're also running inventory, accounting, or HR off the same database.
  • Best open source helpdesk → Zammad. Modern UI, multi-channel (email, Twitter, Telegram, chat), strong API. Replaces Zendesk for teams willing to host.
  • Best lightweight open source ticketing → osTicket. Has been the default "free helpdesk" since the early 2000s. Less polish, zero cost, runs on any LAMP stack.

Self-host vs managed

Most open source CRMs offer a paid managed cloud (SuiteCRM via SuiteASSURED, Vtiger Cloud, Odoo Online). The license is still open source — you can lift and shift if the vendor turns hostile. For teams without ops capacity, the managed plan is usually a better value than the per-seat-forever pricing of proprietary CRMs once you cross 50 users.

Pricing snapshot

Open source CRMs cluster into two tiers: truly free if you self-host (SuiteCRM, osTicket, Zammad community, Odoo Community) and managed/commercial editions ($25–$155/user/mo, with SugarAI's Premier+ at the top). The economics flip somewhere around 25–50 users — below that, paying for HubSpot or Pipedrive is usually cheaper than running your own. Above it, OSS starts to dominate on cost.

What you give up

Polish and rep adoption. Open source CRMs lag the proprietary leaders by 3–5 years on UX, mobile, and AI. If your bottleneck is "reps refuse to log in," OSS will not solve that — pick HubSpot or Attio. OSS solves the cost, control, and customization problem; it doesn't solve the adoption problem.

Trial advice

Self-hosting is real work. Spin up the OSS edition on a $20/mo VPS, import 500 contacts, and try to run two weeks of real pipeline through it. If your team uses it, scale up. If you find yourself fighting the install, take that as the signal — buy the managed cloud or pick a proprietary product.