REI3
The Open Low-Code Platform·rei3.de
REI3 is an open-source, low-code platform for building multi-user business applications without extensive coding. Users can create data stores, build forms, set up workflows, manage access control, call APIs, and schedule notifications through a graphical application builder. It can be self-hosted on-premise or run in the cloud, and existing ready-made REI3 applications (e.g. for time tracking, request handling, password sharing) are available to deploy directly. The platform is free to use, with optional enterprise support and services.
What it's for
Features 24
- Backend functions based on PostgreSQL PL/pgSQL
- Bulk record updates
- Central application repository for sharing/updating apps
- Clustering for scaling across multiple servers
- CSV import/export
- Dynamic form states and field focus controls
- Email sending and receiving (SMTP/IMAP)
- End-to-end encryption with key management
- File management with versioning and hard-links
- Flexible responsive form layouts
- Frontend functions (JavaScript-based logic)
- Full-text search and large text indexing
- Global search across applications
- Graphical application builder (Builder)
- ICS calendar subscription/download
- Integrated automated backups
- LDAP/Active Directory integration and same-sign-in
- Lists, calendars, Gantt plans, Kanban boards, and charts (via Echarts)
- Multi-factor authentication
- OpenID Connect (OAuth2) single sign-on
- Relational data modeling (1:1, 1:n, n:1, n:m)
- REST API server and client
- Role-based and policy-based access control
- Sub forms and floating/inline forms
Pricing
REI3 itself is free and open source for private or commercial use. Enterprise features and professional services are available if needed, but no pricing is published for these.
Enterprise features and services available separately if needed; no price disclosed for these.
Free to use for private or commercial use with no stated usage limits