REI3 in comparison

Is Mendix a good alternative to REI3? We chose to compare Mendix Basic and REI3 Professional as they offer similar functionality.
References: Mendix REI3
Mendix Basic REI3 Professional Details
Infrastructureon-premise, private cloud, public cloudon-premise, private cloud (self-hosted)
  • Mendix supports many infrastructure scenarios, with a strong focus on cloud. On-premise deployment is also available.
  • REI3 runs locally, in the cloud or from a USB stick. REI3 is not yet offered in a public cloud - private cloud hosting is available on request.
Operating systemsWindows Server, LinuxWindows Server, Linux
  • Mendix supports x64 on the backend.
  • REI3 supports x64 and arm64 processors and runs on almost any server, including Raspberry Pis.
Corporate identity / branding
company logo, color, link, welcome text
    Offline server
    • REI3 does not require any internet access. Updates and applications can also be installed offline.
    User experience
    Client accessbrowser, PWA or client appbrowser or PWA
    • Mendix offers multiple ways to deploy to clients, including mobile native wrappers that offer native-like user experience.
    Mobile devicesbrowser, apps for iOS & Androidbrowser or PWA, optimized user interfaces
    • REI3 can be installed on mobile devices as progressive web app (PWA). Cached applications help achieve very fast response times.
    Offline client
    • Mendix offers full offline-ready clients.
    Local file accesswith client appwith client app (Windows, Linux, MacOS)
    • REI3 includes a client app that can open and edit files locally with one click.
    Print function
      PDF generation
        ActiveDirectory / SSO
        • REI3 supports user import, role assignment and same-sign-on via LDAP/ActiveDirectory.
        Calendar sync
        unlimited calendars via ICS
        • Mendix offers many ways to work with calendar data, including options for writing back.
        Data & storage
        Record countunlimitedunlimited
          Database sizeunlimitedunlimited
            Change history
              Data im-/export
                Access controlapplications, pages, workflows, database objectsapplications, tables, attributes, records
                • Mendix offers access to rules to finely control access to database objects.
                • REI3 can assign roles via ActiveDirectory group memberships.
                SQL accesslocally yes, limited in public cloud
                • REI3 keeps data human readable and accessible for reporting.
                Backupsdaily automatic backups, manual also possibleas many/often as desired
                • REI3 also offers an integrated backup system for convenience.
                Database systemsMariaDB, MS SQL-Server, Azure SQL, MySQL, Oracle, SAP HANA, IBM DB2, PostgreSQLPostgreSQL
                • REI3 also offers an integrated database system for convenience.
                Low code development
                Predefined field types
                  Viewstables, cards, forms, charts, gantts, calendars, kanbans, pivots, maps and moretables, cards, forms, charts, gantts, calendars, kanbans
                    Data manipulationfunctions on the client and on the server sidefrontend & backend functions
                    • REI3 authors can directly access data. From working with translations, to email parsing and time calculations - data can be processed in the frontend and on the server side.
                    Automationtriggers, scheduled functionstriggers, scheduled functions
                      Application templateslarge number of applications ready to be used, can be connected to via APIsproduction ready applications to use and build on
                        Ownershipdatabase exports & export of applications (owned and sellable by the author)database exports & export of applications (signed, owned and sellable by the author)
                        • Mendix applications are the intellectual property of the developer. They can be sold on the Mendix Marketplace.
                        • REI3 applications are fully owned by the application author. They can be installed on other systems, sold and used as foundation for new applications.
                        Mail sendingunlimitedunlimited
                        • Mendix can basically do anything with email.
                        • REI3 was already used to build custom mail compaign solutions.
                        Mail receiving
                        • Mendix can fetch and parse emails.
                        • REI3 can fetch and parse emails; a ticket system with advanced mailing capabilities exists for REI3.
                        REST accessunlimitedunlimited
                        • REI3 can both serve as REST server as well as call external REST endpoints.
                        Transport encryption (TLS/SSL)
                          End-to-end encryption at rest
                          • Mendix modules for encrypting data end-to-end are available.
                          • REI3 includes an integrated user key management, to enable easy-to-use, but secure end-to-end encryption. Encrypted data stays protected even in case of theft.
                          Password policy
                            Open source code
                            • Mendix is built on open-source software, but is not itself open-source.
                            GDPR conformityattainableattainable
                            • GDPR conformity is not a simple product feature; it depends on many factors, for which a product can be well-suited for or not.
                            Costs and services
                            Software updates included
                              Email support
                                Premium support
                                • Mendix offers premium support with Premium licensing.
                                • REI3 offers premium support on request.
                                Vendor lock-inclosed-source, self-hosting with licenseopen-source, self-hosting for free
                                • Mendix apps are property of their developers, but licenses are required for continued use.
                                • REI3 is an open application platform; applications can be used and updates installed without paying for support services. The database is human readable and can be used without REI3.
                                Special conditions for educational and charity organizations
                                  Country of originUnited States of AmericaGermany
                                    Pricing10,00 € per user per app per month2,50 € - 5,00 € per user and month
                                    • Mendix offers lower prices for higher user counts.
                                    • REI3 user prices scale with count, more are cheaper.