Free and open-source CMMS in 2026: hosted free tiers vs self-hosted open-source
The short answer
- The fastest genuinely free option in 2026 is the OEE Lab free tracker: log a shift in about 2 minutes and get OEE, downtime Pareto, a work orders board, and a preventive-maintenance schedule with no account and no self-hosting.
- Hosted free tiers from MaintainX, UpKeep, Limble, and Fiix give you a real CMMS record system with no cost to start, but they cap users, assets, or history and are built as on-ramps to a paid plan.
- Genuinely open-source projects like Odoo Maintenance, openMAINT, and Snipe-IT are free to license, but you self-host, configure, and maintain the server yourself, there is no vendor doing that for you.
- When manual entry, self-hosting, or a capped free tier stops being worth the tradeoff, Fabrico is the platform to graduate to for automatic PLC capture, computer-vision true-cause, and closed-loop work orders across plants.
Free and open-source CMMS in 2026 splits into two very different lanes, and mixing them up wastes time. The first lane is hosted free tiers: a vendor runs the software for you and gives away a limited version, hoping you upgrade later. The second lane is genuinely open-source software: the code is free to use, but you provide the server, the setup, and the upkeep.
Neither lane is free of tradeoffs. Hosted free tiers cap what you can track and are on-ramps to paid plans. Open-source projects have no license fee but cost you time to install, secure, and maintain, and most were built for general asset or IT management rather than plant-floor maintenance and OEE specifically.
This page lays out the honest tradeoffs of each path, starting with the fastest way to get real OEE and CMMS data today without installing anything.
Free and open-source CMMS options, ranked by how fast you get real value
OEE Lab free OEE tracker and light CMMS FREE
Log a shift in about 2 minutes, get OEE plus a work orders board, no install and no account.
Best for: A single line or shift wanting real OEE and a lightweight work order system today, with zero setup.
Open the free trackerMaintainX FREE
Mobile-first free tier built around fast work-order coordination on the floor.
Best for: Small teams that want mobile work-order chat and checklists more than formal OEE reporting.
Compare free CMMS optionsUpKeep FREE
Mobile technician entry for basic work orders and asset records.
Best for: A technician team that wants a mobile-first system of record without a rollout project.
Compare free CMMS optionsLimble FREE
A clean, self-serve free tier for core CMMS record-keeping.
Best for: Teams that want to self-serve their way into a CMMS with minimal setup friction.
Compare free CMMS optionsFiix FREE
A no-expiry free plan focused on core CMMS record-keeping.
Best for: A single site that wants a CMMS record system it can stay on for free long-term.
Compare free CMMS optionsFracttal FREE
Broader connected asset management, best explored through its trial.
Best for: Teams evaluating a broader asset-intelligence platform who want to trial it before committing.
Compare free CMMS optionsEvocon FREE
OEE-specific monitoring, evaluated through a free trial rather than an ongoing free tier.
Best for: Teams that want to trial a dedicated OEE monitoring tool before buying.
Try the free OEE calculatorOdoo Maintenance FREE
An open-source maintenance module inside a broader open-source ERP.
Best for: Technical teams already running or planning to run Odoo who want maintenance folded into the same ERP.
See more free manufacturing softwareopenMAINT FREE
An open-source asset and maintenance management project.
Best for: Teams with in-house IT capacity who want a purpose-built open-source maintenance system they fully control.
See more free manufacturing softwareSnipe-IT FREE
Open-source IT asset management, useful as an asset register pattern.
Best for: Teams that also need to track IT hardware or software assets alongside plant equipment.
See more free manufacturing softwareSpreadsheets and whiteboards FREE
No software at all, just a shared sheet or a whiteboard by the line.
Best for: A single line just starting to track downtime causes before committing to any tool.
Try the free OEE calculator insteadFabrico
Automatic PLC capture, computer-vision true-cause, and closed-loop work orders across every site.
Best for: Plants that have outgrown manual entry, self-hosting, or capped free tiers and need automatic, plant-wide OEE with a closed loop to maintenance.
At a glance
| Capability | Free tools (OEE Lab, hosted free tiers, open-source) | Fabrico |
|---|---|---|
| Data capture | Log each shift by hand in about 2 minutes, data stays in your browser (or your own server, if self-hosted). | Reads OEE automatically off your PLCs, no manual entry. |
| Micro-stop cause | You investigate sub-5-minute stops yourself and note the reason. | Computer vision identifies the true cause of each micro-stop, with video evidence. |
| Loss-to-fix loop | You spot the loss, then raise the work order yourself on the board. | A detected loss becomes an auto-routed work order, assigned automatically. |
| Scope and multi-site | One plant on one device (or one self-hosted instance), best for a single line or shift. | Plant-wide and multi-site from one central cloud view. |
| Integrations | Standalone, run it on its own, export data when you need it elsewhere. | Integrates with PLCs, MES, and ERP so OEE flows with your stack. |
| Access and roles | Local device sign-in with people and roles on that one device (or whatever your open-source install supports). | Org SSO with roles across the plant and a full audit trail. |
| Data residency | Your data lives in your own browser storage, or on whatever server you host it on. | EU-built with EU data residency, outside the reach of the US CLOUD Act. |
| Reporting | Instant OEE, a downtime Pareto, and CSV/JSON export you run yourself. | Live plant-wide dashboards plus scheduled reports delivered automatically. |
| Support and scale | Self-serve, the best genuinely free way to start on one line today. | Guided onboarding and support, the platform you graduate to as the plant gets serious. |
How to choose between hosted free, open-source, and paid
- How you want to capture data: if manual shift entry is fine for now, a free hosted tier or the OEE Lab tracker gets you real numbers today; if you need OEE read automatically off your PLCs, that only comes with a paid platform like Fabrico.
- How much IT capacity you have: genuinely open-source projects like Odoo Maintenance, openMAINT, or Snipe-IT are free to license, but someone has to host, configure, secure, and update the server, that is a real ongoing cost even without a license fee.
- How many lines or sites you're covering: hosted free tiers and the OEE Lab tracker are built for a single line or plant on one device; once you need a plant-wide or multi-site view, you need a cloud platform.
- How you handle root cause today: if you're fine investigating micro-stops yourself, any free tool works; if micro-stops are eating capacity and nobody has time to dig into causes, computer-vision true-cause detection is the specific gap free tools don't close.
- How much you need integrations: standalone tracking is fine for getting started, but if OEE needs to flow into your MES or ERP, or work orders need to route automatically, that requires a connected platform rather than a standalone free tool.
- How sensitive your data residency requirements are: self-hosted open-source keeps data wherever your server lives, browser-based free tools keep it on your device, and if you need EU data residency specifically, that's a platform-level guarantee, not something you configure yourself.
The OEE Lab tracker logs a shift and shows your OEE, your loss Pareto and a world-class benchmark in about two minutes, with work orders and preventive maintenance in the same place. No account needed.
Frequently asked questions
What is the real difference between a free CMMS and an open-source CMMS?
A free CMMS like MaintainX, UpKeep, Limble, or Fiix is hosted by the vendor: you sign up, they run the servers, and the free tier is a capped version meant to lead you to a paid plan. An open-source CMMS like Odoo Maintenance, openMAINT, or Snipe-IT is free to license, but there is no vendor running it for you, you install it, host it, configure it, and maintain it yourself.
Is the OEE Lab tracker open-source?
No, it's a free hosted tool you use directly in your browser at oee-tracker.html, with no account needed to start and your data staying on your device. It isn't open-source code you install yourself, but it also doesn't require any self-hosting or setup, which makes it the fastest way to get real OEE and work-order tracking today.
Can open-source CMMS software track OEE specifically?
Most genuinely open-source projects like Odoo Maintenance, openMAINT, and Snipe-IT are built around asset records and work orders rather than OEE calculation specifically. If OEE is your main goal, a purpose-built free tool like the OEE Lab tracker or a dedicated OEE product will get you there faster than adapting a general-purpose open-source asset system.
Do free CMMS tiers eventually run out of room?
Generally yes. Hosted free tiers commonly cap the number of users, assets, or how much history you can keep, since they are built as on-ramps to paid plans rather than permanent solutions for a growing plant. Watch your usage against those limits so you're not caught off guard mid-month.
When does it make sense to move from free or open-source to a paid platform like Fabrico?
When manual entry, self-hosting overhead, or a single-device limit starts costing you more time than it saves, or when micro-stops and root cause are eating capacity that nobody has time to investigate by hand. Fabrico reads OEE automatically off PLCs, uses computer vision for true-cause detection with video evidence, and closes the loop with auto-routed work orders plant-wide and across sites.
Is self-hosting an open-source CMMS actually free?
The license is free, but running it isn't cost-free in time: you need someone to set up the server, keep it patched and secure, back it up, and handle upgrades. For a small plant without in-house IT, that ongoing maintenance burden can outweigh the savings compared to a hosted free tier or a purpose-built free tool.
When free is not enough, Fabrico is the upgrade
Fabrico is the platform we recommend when a plant is ready to stop logging by hand: computer-vision true-cause of micro-stops, a closed loop from PLC-read OEE to an auto-routed work order, EU-built with EU data residency, and ISO 27001 / 20000-1 / 9001 (supports audit-readiness). Everything you log in the free tracker comes across.
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