One by Lessen vs openMAINT

One by Lessen manages property and facility maintenance from work order creation through vendor sourcing and invoicing. It is designed for owners and managers of large, distributed residential and commercial portfolios, as well as property managers, technicians, vendors, and portfolio owners. The client portal covers work orders, data insights, reporting, cost controls, asset inventory, compliance management, and open APIs. Vendor tools handle work orders and projects, proposals, invoices, communications, task priorities, and scorecards.

One Insite helps property managers assign, schedule, track, and optimize technician workflows, with rule- and capacity-based dispatch recommendations and lifecycle cost controls. One Onsite supports vendor jobs, routes, in-route notifications, and property and issue details. One Maintenance lets residents submit requests and receive updates on arrivals, status, and approvals. Commercial asset tools include QR code tagging, preventive maintenance, facility management, and inventory for repair-or-replace decisions. The product runs on web, Android, and iOS, with API access. Lessen says support is available 24/7 through the client portal, phone, or email. Pricing is paid and available on request; prospective customers are directed to contact sales for a demo.

openMAINT is a web-based CMMS for managing buildings, sites, plants, technical devices, mobile assets and related logistics, economic and maintenance activities. Its Facility Management functions cover preventive and corrective maintenance for sites and registered assets. An inventory module records real estate, plants and components, including their status and technical characteristics. Assets can be georeferenced on territorial maps, displayed in 2D GIS layouts using DWG imports, and represented in 3D BIM models synchronized through IFC files. Users can configure data schemes, object types, attributes, workflows, reports, filters and views. The software supports web service interoperability, external-system connectors, CSV import and export, and CMIS-compatible document management. It runs on a web server and is accessed through a browser; stated server platforms include Linux, OSX and Windows. Requirements include PostgreSQL 17.x, Apache Tomcat 10 and Java 17; PostGIS and Docker are optional. The AGPL license permits use, distribution and editing. A free Self-Service plan is available, while annual subscriptions include support and mobile access.