Open Source CMMS in 2026Real cost, alternatives, free cloud option
To be clear: FreeMaint is not open source — it is a proprietary SaaS with a free Core tier. This page compares it against open source CMMS options.
Looking for free open source CMMS? Before committing to OpenMaint or GLPI, read the real cost.
Open source CMMS needs server, sysadmin, updates and security — often $1,000-3,000/year of hidden costs. FreeMaint offers an alternative: Core tier free (unlimited users/work orders/assets, no IT) or paid tiers Starter/Business/Enterprise for advanced features (Vendors, Workflows) — and FreeMee AI is included on every plan. Proprietary on-premise version (new deployments currently paused) for those wanting hosting control.
Open Source CMMS Software: What It Really Costs
| Criterion | Open Source CMMS | FreeMaint Cloud |
|---|---|---|
| License/subscription cost | $0 (AGPL/GPL) | $0 (Core) — $299/mo (Enterprise) |
| Server cost | ~$150/mo | Included ($0) |
| Sysadmin | 4-8 hrs/mo (~$300) | Included ($0) |
| Updates | Manual | Automatic |
| Setup time | 2-5 days | 2 minutes |
| Self-hosting | Yes (by design) | On-Premise option (paused) |
| Annual TCO (10-tech team) | ~$5,400/yr | $0 (Core) — $1,188 (Business $99/mo) |
Which CMMS Open Source Projects Are Worth Evaluating?
OpenMaint is the most complete of the open source options: assets, work orders, preventive schedules and inventory, built on the CMDBuild framework. That framework is also the commitment — it is configured rather than set up, so budget for someone who will learn it properly.
GLPI came from IT asset management and grew maintenance capability through plugins. If you are already running it for IT inventory, extending it costs little. If you are not, you are adopting an IT tool and adapting it to a plant floor.
Odoo Maintenance makes sense when the rest of Odoo is already in place, since the maintenance module inherits the ERP's data model. On its own it is a large dependency for one function.
All three are genuinely capable, and the licence genuinely costs nothing. The cost sits in the infrastructure and the hours: a server, backups, upgrades, and someone accountable when an upgrade breaks on a Friday. That is the comparison the table above makes — hosted versus self-run, not free versus paid.
FAQ: Open Source CMMS vs Free Cloud
What is the best open source CMMS in 2026?
The main open source CMMS options in 2026 are OpenMaint, GLPI Plugins (Maintenance), Snipe-IT (asset-only), and CMMSManager. All require a server, IT staff for installation, and regular technical maintenance. FreeMaint is a proprietary cloud alternative with a free Core tier (unlimited users/work orders/assets) and 3 paid tiers — not open source but zero IT setup and operational in 2 minutes.
Why choose a free cloud CMMS over open source?
Open source CMMS has hidden TCO: server (~$150/mo), system admin (4-8 hrs/mo, ~$300), manual updates, security, backups. FreeMaint cloud absorbs all that: the Core tier is free (unlimited users/work orders/assets), paid tiers Starter $29 / Business $99 / Enterprise $299/mo unlock advanced features. For a team without dedicated IT, total "free open source CMMS" cost quickly exceeds $1,000/year, while FreeMaint starts at $0 and tops out at $1,188/year on Business — still cheaper than open source TCO.
Will FreeMaint ever be open source?
Not in current plans. FreeMaint stays a proprietary cloud SaaS with a free Core tier (unlimited users/work orders/assets) and 3 paid tiers ($29/$99/$299/mo). Reason: keeping the code proprietary lets us guarantee quality, security, and rapid evolution for all users. For organizations needing self-hosting due to data sovereignty (regulated sectors), a proprietary on-premise version exists, but new deployments are currently paused (waitlist only).
Can I self-host FreeMaint like an open source CMMS?
Not right now — on-premise deployments are currently paused — we are not taking on new self-hosted installations, and would rather say so than sell one we could not support well. It is a pause, not a closure: if you have a hard requirement (air-gapped network, data-sovereignty mandate) we will add you to the waitlist. The cloud version is the same software, hosted in the EU (France). The On-Premise version exists but new installations are paused. You install FreeMaint on your own server (Docker), keep data 100% in-house, and benefit from updates via Watchtower. Ideal for regulated sectors (healthcare HIPAA, defense, ISO 27001/GMP) that cannot use a cloud SaaS.
What is the difference between free CMMS and open source CMMS?
Free cloud CMMS = ready-to-use SaaS in 2 minutes, no server or IT. Open source CMMS = downloadable source code, install/maintain on your infrastructure. Free cloud CMMS deploys faster but depends on the vendor. Open source offers control but needs technical skills. FreeMaint offers both: free cloud SaaS + paid proprietary on-premise.
Is OpenMaint really free?
OpenMaint is open source (AGPL license), so free in theory. In practice, you must budget the server (~$150/mo OVH/Hetzner), sysadmin (~$300/mo internal or contractor), and configuration hours. Many organizations switch to FreeMaint after evaluating OpenMaint's total cost.
What are the disadvantages of open source CMMS?
Three major drawbacks: (1) hidden infrastructure and maintenance costs, often $1,000-3,000/year, (2) no official support, dependence on community forums for bugs, (3) manual updates that can break integrations. FreeMaint cloud solves all three while staying free.