REI3
The facts below are what the maker publishes about REI3, checked and dated. Our editors have not written about it yet.
Plans and prices
From REI3's own pricing page, checked 12 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | No user limit · unlimited storage, API calls, email handling, backend processing, frontend scripts and app developers |
| REI3 Professional (1–10 users) | €5.50 a month | 1–10 users · 3 additional limited users per licensed user · Per user & month |
| REI3 Professional (11–25 users) | — | 11–25 users · 3 additional limited users per licensed user |
| REI3 Professional (26–50 users) | €4.50 a month | 26–50 users · 3 additional limited users per licensed user · Per user & month |
| REI3 Professional (51–100 users) | — | 51–100 users · 3 additional limited users per licensed user |
| REI3 Professional (101+ users) | €3.50 a month | 101+ users · 3 additional limited users per licensed user · Per user & month |
| REI3 Professional | €3.50 a month | Concurrent-user licensing · 3 additional limited users per licensed user · per user & month; 101+ users |
The facts
Each one read from REI3's own pages, with the date it was checked.
What it does
- API integrations
- Yeschecked 22 Sep 2026
- Availability
- A public demo system is available for live testing without registration.checked 12 Oct 2026
- Built-in database
- Yeschecked 22 Sep 2026
- Deployment
- REI3 can be hosted on-premise or in the cloud, and its applications are accessed from devices with a modern browser.checked 12 Oct 2026
- Integrations
- Connectors include REST APIs, LDAP and Active Directory, OpenID Connect, SMTP, IMAP, and calendar data via ICS.checked 12 Oct 2026
- Mobile access
- REI3 supports mobile browsers and can be installed to the home screen on iOS and Android as a progressive web app.checked 12 Oct 2026
- Notable limitation
- The maker notes that REI3 is built on web technologies and that native applications can have benefits outside a browser.checked 12 Oct 2026
- Professional license limits
- Professional licensing is based on concurrent users, and each licensed user includes three limited users who cannot be administrators and can have only one application role.checked 12 Oct 2026
- Purpose
- REI3 is an open-source business application platform for deploying existing apps or building new applications to meet software requirements.checked 12 Oct 2026
- Security
- REI3 supports built-in end-to-end encryption with user key management, multi-factor authentication, and role and record-level access controls.checked 12 Oct 2026
- Support
- The free offering lists contact-form support with best-effort response, while Professional lists email support with a one-work-day response time.checked 12 Oct 2026
- User authentication
- Yeschecked 22 Sep 2026
- Visual builder
- Applications are built with a graphical Builder for defining data structures, user interfaces, and record access.checked 12 Oct 2026
- Who it is for
- The maker describes REI3 as particularly strong for internal software needs, including replacing spreadsheet or Access-based multi-user processes.checked 12 Oct 2026
- Workflow and data features
- The platform supports forms, workflows, schedulers, notifications, access policies, file and email processing, and CSV import/export.checked 12 Oct 2026
Where it runs
- App authenticity
- The official application repository's apps are checked and signed by REI3 developers; third-party app signatures can be verified before installation.checked 12 Oct 2026
- App types
- webchecked 22 Sep 2026
Money
- Free plan
- Yeschecked 22 Sep 2026
The company
- Headquarters
- Munich, Germanychecked 28 Sep 2026
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