The phrase preventive maintenance software programs covers three genuinely different products sold to three different sites, and choosing badly here is expensive in a way that is hard to reverse. The scheduler keeps a plan. The CMMS runs a maintenance department. The enterprise asset platform runs a portfolio of them. Sites routinely buy the second when they needed the first, then use a tenth of it and conclude that maintenance software does not work.
The scheduler: one site, one person owning the plan
Assets, intervals, due dates, checklists and the history of what was done. No dispatch board, no parts, no labour costing. It suits the site where planned work is the whole problem and the person doing the planning is also doing several other jobs. Its limit is that it does not manage a crew, and a site that needs to manage a crew will feel that within weeks.
The CMMS: a maintenance department with a queue
Everything the scheduler does, plus work orders assigned to people, requests coming in from elsewhere in the building, and usually parts and labour against the job. It is the right answer when reactive work is a real volume and somebody has to decide every morning who does what. It is priced per user, so the bill follows the crew rather than the plan.
The enterprise asset platform: many sites, one standard
Bought when a portfolio needs the same asset hierarchy, the same coding and the same reporting across plants or buildings, and when finance wants capital and maintenance spend joined. It is a project rather than a purchase, and for a single site it is a very expensive way to hold a list of intervals.
Questions people ask about preventive maintenance software programs
Which shape does a single building or plant need?
Usually the scheduler, unless reactive work and a crew queue are a daily problem. The honest test is whether anybody spends the morning deciding who does what; if not, you are buying a dispatch board you will not use.
Can we start with a scheduler and move up?
Yes, and it is a reasonable path if the export is good. Check during the trial that assets, intervals and completed visits all come out in ordinary formats, because that export is what makes the move possible later.
Is free preventive maintenance software any good?
Free tiers are usually real and usually limited by asset count or users. They are a genuine way to learn what you need, provided you check what happens to your data if you stop at the free tier.