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RentalMan

RentalMan at a glance
VendorWynne Systems
HeadquartersIrvine, California, USA (offices in Houston, Toronto and Elland, UK)
OwnershipVolaris Group, an operating group of Constellation Software, since 2012 (previously owned by United Rentals from 2000)
DeploymentHosted or on-premises on an IBM i foundation, with browser and mobile access
Support statusActive; in market since 1991
Target marketNational and multinational equipment rental companies with large fleets and many branches
IndustriesHeavy equipment and construction rental, cranes, aerial and access, pump, power and climate, CAT dealer rental, durable medical equipment
PricingPricing on request (not published; checked August 2026)
Websitewynnesystems.com

What RentalMan is

RentalMan is an enterprise ERP for equipment rental, covering the asset from procurement through utilization, billing and depreciation to disposal. Wynne Systems has sold it since 1991, and it serves as the system of record inside several of the largest heavy equipment rental fleets in North America. This is deliberately not a small-business product.

Vendor, history, ownership

Wynne Systems was founded in January 1991 in Long Beach, California by a small group of programmers writing rental software, and now sits in Irvine with offices in Houston, Toronto and Elland in the United Kingdom. Ownership has changed twice. United Rentals acquired the company in 2000 and ran it as a subsidiary until 2012, when it sold Wynne to Volaris Group, an operating group of Constellation Software. Constellation is a long-hold acquirer that rarely resells, so the ownership question that dogs private-equity-backed vendors is comparatively settled here. In June 2015 Wynne spun out InTempo Software to serve local and regional rental companies, and since then Wynne itself has concentrated on national and multinational accounts. Both entities sell RentalMan, at different ends of the size spectrum, with support models built around customer scale.

Core functionality

  • Full asset lifecycle: procurement, transfer, utilization tracking, depreciation, disposal
  • Rental contract and reservation management with multi-currency and multi-language operation
  • Billing and revenue handling across branches and countries
  • Logistics and dispatch, extended by the Dispatching Solutions capabilities combined in 2018
  • Service, maintenance and parts
  • e-commerce, customer portals, mobile applications and reporting
  • Companion products RentalResult for construction-side and external rental, and EquipFlows for equipment management including durable medical equipment

Typical customers

Wynne states plainly that it focuses on larger national and international rental customers. In practice that means fleets in the thousands or tens of thousands of assets, spread across dozens or hundreds of branches, frequently in more than one country. Segments include heavy equipment and construction rental, cranes, aerial and access, pump, power, air and climate rental, CAT dealer rental operations and durable medical equipment. Regional operators get routed to InTempo instead.

Deployment and pricing

RentalMan runs hosted or on-premises on an IBM i foundation, with browser and mobile front ends over the top. Pricing is not published and will not be for deals of this size; expect a multi-year enterprise agreement scoped by fleet size, branch count, countries and users. Layered architectures are common at this end of the market, with RentalMan anchoring the rental operation while a corporate finance suite handles group consolidation. Our note on two-tier ERP covers that pattern if it is the shape you are considering.

Our take

If you run a large multi-branch rental fleet and your problem is utilization, depreciation accuracy and billing at volume, RentalMan belongs on a very short list of systems that have demonstrably done it at that scale for three decades. The Constellation ownership is a stability argument, not a growth-story argument, and buyers should read it that way. Who should not buy it: any independent yard under a few hundred assets, where implementation cost and IBM i skills sit wildly out of proportion to the problem. Buyers who want cloud-native architecture, a public API catalog and quarterly feature drops will find the platform conservative by design. Treat the shrinking pool of available IBM i talent as a real constraint over a ten-year horizon, not a footnote in the risk register.

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Frequently asked questions

Who owns RentalMan and Wynne Systems?

Wynne Systems, the maker of RentalMan, is owned by Volaris Group, an operating group of Constellation Software Inc. Volaris acquired the company in 2012 from United Rentals, which had owned it since 2000. Constellation buys vertical software businesses and holds them indefinitely rather than reselling, which is a materially different ownership profile from the private equity firms that own most competing rental platforms.

If both Wynne and InTempo sell RentalMan, which one should I talk to?

Size decides it. Wynne spun InTempo out in June 2015 precisely so each side could specialise: Wynne serves national and multinational rental companies, InTempo serves local and regional independents. Both sell RentalMan, but the implementation approach, support structure and commercial expectations differ substantially between them. A single-region operator with a modest fleet talking to Wynne will get an enterprise-shaped proposal that does not fit, and vice versa. Ask directly which entity handles a company of your size before the first demo, because the answer determines the entire engagement. Note also that InTempo carries additional product lines from the Solutions By Computer heritage, so the shortlist you get from each entity will not be identical.

Is RentalMan suitable for a small rental company?

Generally no. Wynne targets national and multinational fleets, and the implementation cost, project length and IBM i platform skills required do not scale down well. Smaller operators are better served by InTempo, Texada or a comparable mid-market product.