Compare DOOR vs. Flex

All-in-one property management software that helps property managers and owners make more money, get organized, and grow. Simplify property management with easy-to-use, secure, and reliable software. With cutting-edge technology, world-class support, and free educational resources, DoorLoop empowers you to grow personally, professionally, and financially.

Join thousands of property managers who trust Buildium to take control of every aspect of their business and drive more revenue per door. It’s the #1 most recommended for a reason. Buildium is all-in-one property management software loaded with all the features you need to thrive—accounting, communications, leasing, top-rated mobile apps and more. You’ll be able to find new revenue streams from resident services, count on award-winning support, and tap into an ecosystem of proven integrations with Buildium Marketplace. No matter the portfolio, Buildium is purpose-built for your job. With packages starting at just $62 a month, and zero hidden fees, it’s no wonder Buildium is ranked by Forbes to be the “Best Real Estate Accounting Software for Property Managers.”

Alosant is a branded resident experience platform designed for master-planned communities, residential developers, HOAs, and community management teams. Through one connected app experience, Alosant helps communities manage communication, events, amenity reservations, interactive maps, resident profiles, payments, access control, and day-to-day operations. Built for communities of any size that need to engage residents, Alosant makes it easier for residents to stay informed, discover events and amenities, participate in community life, and connect with the places around them. For community teams, the platform supports more efficient operations, stronger engagement, and a more consistent resident experience across every stage of community living.

6Storage is a cloud-based self-storage management solution that streamlines operations for facility owners and operators. The platform automates rentals, invoicing, online payments, tenant communication, and gate access control, while offering detailed reporting and analytics. With customizable automation tools and multi-location support, 6Storage reduces manual workload and operational costs. Designed to be scalable and intuitive, it helps operators deliver a seamless tenant experience, improve efficiency, and grow revenue—all from one central dashboard.

Our web-based software is easy to use and features rich. This allows you to automate property management. You will find the following features: Accounting Integration, Online payments, Amenity Bookings, Service Requests, and more. Our web-based software can be used for HOAs, Condos, and other properties. This simple tool will simplify your maintenance and operations, both for property managers and tenants.

Save hours per day in double data entry and thousands per month on fuel costs because of our automations and routing optimization tools powered by Google Easily keep track of your one-time and recurring jobs with our job pool and drag-and-drop scheduling tools. Sign up new customers, see your schedule, complete appointments, track chemical usage, and much more from the convenience of your phone or tablet. Automate pre-service notifications, follow-up messages, collection notices, review requests, and other daily tasks. Post payments, resend emails, upload and send attachments, text, and much more from an easy-to-use customer account. Use our Recruiting, Street-Level Lead Tracking, Area Management, Video Training, and Leaderboards to manage your Door-to-Door efforts.

RealEstateAPI (REAPI) provides big data as a platform. We provide our customers with fast, flexible APIs that give them access to property information. Our 'Smart API System' delivers data and a data structure that makes development faster. Our APIs are used by a wide range of companies, from startups to publicly-traded companies, to create SaaS applications, train AI models and generate insights quickly. Our APIs are used by customers in the proptech, home services and fintech industries to access financial and physical details of 159M properties across the country. Our solutions allow companies to scale operations quickly while reducing risks and costs associated with data manipulation the old-school way.

Retool is a modern AI-native application development platform designed to help teams build internal software quickly and efficiently. It enables users to create agents, workflows, dashboards, and full-stack apps using natural language prompts and visual tools. Retool connects directly to databases, APIs, vector stores, and AI models to ensure applications work seamlessly with existing systems. The platform allows teams to transform raw data into actionable tools such as dashboards, admin panels, and monitoring systems. With drag-and-drop UI building, code-level customization, and AI-assisted generation, Retool supports multiple development styles. Built-in workflows automate complex processes while maintaining auditability and security. Retool fits naturally into standard engineering stacks with support for CI/CD and version control. Enterprise-grade permissions and hosting options ensure sensitive data stays protected. Used by thousands of companies worldwide, Retool helps teams ship AI-powered software faster. It bridges the gap between idea and production with speed and control.

Process Street is the Compliance Operations Platform built for teams that need to move fast without breaking standards. It combines document control, workflow automation, and AI-powered oversight in a single system so every policy is followed, every step is tracked, and every audit is effortless. Unlike legacy GRC tools or static SOP docs, Process Street turns compliance into a living system. Policies are documented in governed, version-controlled Pages. Those policies are executed through dynamic workflows with built-in task assignment, approvals, and forms. Every action is logged, monitored, and optimized in real time by Cora, our AI compliance agent. Used across industries like financial services, real estate, healthcare, and manufacturing, Process Street helps teams automate employee onboarding, streamline audits, manage policy updates, enforce vendor reviews, and run critical processes at scale. No code required. No micromanagement. Just proof that work gets done right, every time. Companies like Salesforce, Colliers, Drift, and Hartford Healthcare trust Process Street to eliminate busywork, improve operational visibility, and reduce compliance risk across the business. With native integrations, role-based access, audit trails, and ISO-aligned workflows, it is the platform that makes compliance a competitive advantage. From onboarding to audits, Process Street is how high-stakes teams enforce standards, automate execution, and prove compliance by default.

Rent Manager is a fully integrated property management, accounting, CRM, marketing, reporting, and facility-maintenance software suite that enables users to manage all types of properties. Users can completely customize the platform and reconfigure multiple aspects; including how reports and documents are generated, the appearance of the interface, and which information is displayed on a user-by-user basis. The double-entry accounting system allows users to track every aspect of their business’ finances—whether they manage a single community or hundreds of properties. Rent Manager helps reduce time spent on routine tasks by streamlining daily activities, letting users invest more time in growing their business. Using the rmAppSuite Pro mobile app, property managers can access their data in the field to conduct inspections, communicate with tenants, track violations, read meters, and more, directly from their smartphone. Rent Manager also provides more than 450 built-in reports designed to help users answer important questions about their operations—from the financial status of their portfolio to services issues, vacancies, rent roll, leasing, and more.