Open Source CRM: Compare What You Can Actually Run
A useful comparison starts with license, edition boundaries, deployment, operating effort and product scope rather than a feature table copied from vendor pages.
by Benjamin WagnerThe best open-source CRM is the one whose license, self-hosting path, operating effort and CRM scope match your team. “Source available,” “open core” and “open source” are not interchangeable, and a long feature checklist says little about what you can lawfully run or realistically maintain.
This guide uses a durable evaluation framework instead of ranking projects by changing prices, star counts or unsourced feature claims. Disclosure: Customermates publishes this comparison and is one of the products discussed below.
At a glance
- Start with
The license and edition boundary for the exact code you plan to run, not the repository label.
- Then verify
A maintained deployment path, the CRM model, interfaces, migration path and the operating work your team will own.
- Treat as unknown
Any capability that is absent from current official documentation or from a workflow you have tested yourself.
- Disclosure
Customermates publishes this guide. Its own claims are separated from the source map for other projects.
License
Edition
Deployment
Operations
Product fit
Start with the license, not the homepage
Before comparing features, identify:
- the license attached to the exact server and client code you need;
- directories or modules governed by a separate commercial license;
- obligations triggered by modifying or providing the software over a network;
- trademark restrictions that are separate from the software license; and
- whether the repository is the complete runnable edition or only part of it.
A public repository does not automatically grant open-source rights to every file. Read the license files in the version you plan to deploy and ask counsel when the obligations matter to your organization.
Seven criteria for comparing open-source CRM software
| Criterion | What to verify |
|---|---|
| License boundary | Which code is open source, which is commercial, and which obligations apply? |
| Deployment | Is there a maintained, documented path for the exact edition you need? |
| Operations | Who owns upgrades, backups, restoration, monitoring, TLS and incident response? |
| CRM model | Does it cover the contacts, organizations, opportunities, services and tasks you actually use? |
| Interfaces | Are REST, webhooks or agent interfaces available for your workflow? |
| Edition gap | Which cloud or enterprise capabilities disappear when self-hosting? |
| Migration | Is there a real import/export path, or must you design one through APIs or the database? |
Treat an unmeasured or undocumented capability as unknown, not as included.
A shortlist without a fake ranking
Open-source CRM searches surface projects with very different scopes. Customermates, SuiteCRM, EspoCRM and Twenty are useful starting points for a source-led shortlist. Odoo Community and CiviCRM can be relevant when a broader business-suite or membership context is part of the requirement. Verify the current official license, edition boundary, deployment documentation and maintenance state before deciding.
For side-by-side detail on two of them, see the EspoCRM alternative and Twenty alternative comparisons, which list licence, stack, pricing, channels and MCP support from each project's official pages.
Their intended breadth differs. Some focus on CRM, some sit inside a broader business suite, and some are shaped around nonprofit or membership workflows. That makes a universal “number one” less useful than a shortlist scored against your own requirements.
Official source map checked on 28 August 2026
| Project | Current official evidence to inspect | What this source supports |
|---|---|---|
| Customermates | AGPL core license, commercial and AGPL client-material boundary, and Compose deployment | Exact repository licenses and the tracked application plus PostgreSQL deployment |
| SuiteCRM | AGPL licensing and installation guide | The documentation states AGPLv3 and exposes a maintained administrator installation path |
| EspoCRM | Repository and license and Docker installation | A public source license and an official Docker deployment path |
| Twenty | License and Docker Compose guide | A public source license and an official Docker Compose self-hosting path |
This table is a source map, not a product ranking or a claim that the projects have equivalent editions. Open each license and deployment source at the version you are evaluating.
Where Customermates fits
Customermates is an open-core CRM for customer relationships and pipelines, made in Germany. First-party material outside ee/ is AGPL-3.0-only. Inside ee/, material is commercially licensed except for the client material identified as AGPL-3.0-only in Section 6 of ee/LICENSE.md.
The official self-hosted CRM deployment contains the application and PostgreSQL 16. The self-hosted edition has the Starter feature set.
| Customermates self-hosted capability | Status |
|---|---|
| Contacts, organizations, deals, services and tasks | Included |
| Custom fields, table and Kanban views | Included |
| REST, webhooks and MCP | Included |
| External AI clients through MCP | Included; customer supplies the client and provider |
| Unified inbox and messaging accounts | Not included |
| Cloud-only Mate assistant and hosted credits | Not included |
| Connected read-only calendar view | Not included |
| Record import and export as XLSX workbooks | Included, one record type at a time |
This makes Customermates a fit when you want a focused CRM, Docker/PostgreSQL deployment and an open MCP interface. It is not a fit when self-hosting must include the managed-cloud inbox, when you need custom object types, or when you need a PSA, invoicing or time-tracking suite.
Open source is not the same as self-hosted
The two terms are often searched together but answer different questions. Open source is about rights: what the licence lets you inspect, change and redistribute. Self-hosted is about operations: whose servers run the application and database. A project can be open source and still be used mainly as a cloud service, and a self-hosted product can be proprietary. This guide covers the licence and shortlist questions; the self-hosted CRM page covers the Customermates deployment itself, and the agentic CRM guide covers how AI clients work with it through MCP.
Self-hosting changes who operates the system
Open source gives you permissions defined by the license; self-hosting gives you infrastructure responsibility. Neither is an automatic promise of security, compliance, portability or low cost.
Your team must decide who will own:
- application and database updates;
- backups and tested restoration;
- network controls, TLS and secrets;
- monitoring and incident response;
- capacity and availability planning; and
- every connected provider and its data flow.
If you want Customermates-specific deployment detail, use the self-hosting guide. Do not copy a generic Docker runbook from a comparison article into production.
Cloud versus self-hosted CRM
Choose managed cloud when you want the vendor to operate the application and when cloud-only capabilities are essential. Choose self-hosting when the license, Starter feature boundary and operating responsibility fit your team.
For Customermates, the distinction is explicit: the core CRM, REST, webhooks and MCP can be self-hosted; the unified inbox, connected calendar view, hosted Mate capability and hosted credits cannot.
A practical evaluation checklist
Define the job
Write down the records, views, integrations and deployment constraints the CRM must support.
Inspect the legal boundary
Read the exact license and edition boundary for every finalist and version.
Run the official path
Follow the maintained deployment guide in an isolated environment.
Test operations
Verify authentication, permissions, backups, restoration and upgrades instead of inferring them from marketing copy.
Price the whole system
Estimate infrastructure, external services and operator time together.
Plan migration separately
Design and validate a migration procedure if the product has no dedicated import or export workflow.
Review the exact Customermates self-hosting boundary or inspect the repository before adding it to your shortlist.
Frequently asked questions
What does open-source CRM mean?
It means the CRM code is offered under an open-source license that grants defined rights to use, inspect, modify and redistribute it subject to that license. Check the exact files and edition: a repository may also contain separately licensed code.
Is every open-source CRM free to operate?
No. A license may not charge a software subscription, but infrastructure, backups, upgrades, monitoring, security work and external providers still cost money and operator time.
Does open source guarantee data control or GDPR compliance?
No. Self-hosting can give you control over the application and database location, but compliance and data flows depend on configuration, connected providers, contracts, policies and operations.
Is all Customermates code AGPL-3.0?
No. First-party material outside ee/ is AGPL-3.0-only. Inside ee/, the
client material identified in Section 6 of ee/LICENSE.md is also
AGPL-3.0-only; the remaining first-party material uses the commercial license.
Review both license files for the exact boundary.
Can I import or export CRM records in self-hosted Customermates?
Yes. Records move in and out as XLSX workbooks, one record type at a time, scoped to the user's read access and the current view, with row limits in both directions. CSV is not accepted, so save CSV files as .xlsx first. For anything beyond that, such as attachments or a complete account transfer, design a migration through the REST API.
Related pages
Self-Hosted CRM
Run the Customermates CRM application and PostgreSQL on your infrastructure with Docker Compose. AGPL core, MCP, REST and webhooks are included.
Self-Hosting Customermates with Docker Compose
Run Customermates on your own server with Docker Compose: install, .env values, email, sign-up, updates, backups and restore, and what differs from Cloud.
Free CRM Software in 2026: Models, Limits & Shortlist
Compare permanent free CRM plans, open-source self-hosting, and free trials with a current evaluation framework and official provider sources.
White Label CRM: Options, Requirements, and Trade-offs
Compare turnkey, reseller, custom-build, and licence-compliant self-hosted CRM approaches across branding, tenancy, operations, and contracts.
Customermates
Evaluate Customermates as an open-source CRM
Try the managed cloud CRM or review the self-hosted edition with its AGPL core, Docker and PostgreSQL. Self-hosting uses the Starter feature set and includes neither the hosted inbox nor Mate.
Free for 7 days • Self-hosting: Starter feature set, no hosted inbox and no Mate