REI3 icon
REI3 icon

REI3

 9 likes

REI3 is an open low-code application platform. Free for individuals and organizations, anyone can use REI3 to rapidly build multi-user applications.

REI3 screenshot 1

License model

  • FreeOpen Source

Application type

Country of Origin

  • DE flagGermany
  • European Union flagEU

Platforms

  • Windows  Windows Server 2016 or higher
  • Linux  PostgreSQL 13 or higher
  • Online
  • Self-Hosted  Windows, Linux or Docker - ARM64 or X64 processor
5 / 5 Avg rating (4)
9likes
3comments

Features

Suggest and vote on features

Properties

  1.  Privacy focused
  2.  Lightweight
  3.  Clean design

Features

  1.  Multiple languages
  2.  Import CSV Data
  3.  Portable
  4.  Drag and Drop
  5.  End-to-End Encryption
  6.  Dark Mode
  7.  Shared Folders
  8.  Reminders
  9.  Subtasks
  10.  No registration required
  11.  Two-factor Authentication
  12.  No Tracking
  13.  Works Offline
  14.  Gantt-charts
  15.  Calendar Integration
  16.  Recurring Tasks
  17.  Kanban Board
  18.  Technical versatility
  19.  Data export/import
  20.  Workflow Automation

 Tags

REI3 News & Activities

Highlights All activities

Recent News

  • Fla published news article about REI3
    about 2 months ago
    REI3.10 launches with major updates image
Show more news

Recent activities

  • PredatorQ liked REI3
    about 2 months ago
  • REI3_Gabriel updated REI3
    about 2 months ago
  • sarkisderderian liked REI3
    7 months ago
  • ojaatka added Lightweight as a feature to REI3
    10 months ago
  • ojaatka reviewed REI3  
    10 months ago

    Very well thought-out and flexible. A real game changer

  • ojaatka liked REI3
    10 months ago
Show all activities

REI3 information

  • Developed by

    DE flagLean Softworks
  • Licensing

    Open Source (MIT) and Free product.
  • Written in

  • Rating

    Average rating of 5
  • Alternatives

    16 alternatives listed
  • Supported Languages

    • English
    • German

AlternativeTo Categories

Office & ProductivitySecurity & PrivacyDevelopmentFile Sharing

GitHub repository

  •  423 Stars
  •  60 Forks
  •  10 Open Issues
  •   Updated Apr 15, 2025 
View on GitHub

Our users have written 3 comments and reviews about REI3, and it has gotten 9 likes

REI3 was added to AlternativeTo by Gabriel on Mar 17, 2021 and this page was last updated Feb 26, 2025.

Comments and Reviews

   
 Post comment/review
Top Positive Comment
Guest
Jun 30, 2023
1

Open Source, selfhosted

ojaatka
Jul 7, 2024
0

Very well thought-out and flexible. A real game changer

fleupold
Jun 17, 2023
1

It's perfect for database-related apps. The structure is very well thought-through, and all kinds of relations and queries are possible.

What is REI3?

Free yourself from walled gardens and cloud-only SaaS offerings. REI3 enables powerful low code applications, selfhosted in the cloud or on-premise. Create and then use, share or even sell your REI3 applications.

A wide range of publicly shared applications are also available, installed with a single click. Track employee time, manage tasks, control assets, manage requests, safely store passwords and more with ready-to-use REI3 applications.

REI3 comes with a large amount of features for small or more complex software requirements:

  • Turnkey solution with integrated database and backups for smaller teams.
  • Optimized for different screen sizes, installable on mobile devices as well.
  • Many input & presentation options, including forms, calendars, charts, color inputs, file managers, Gantts and much more.
  • Powerful access management with control over individual records if needed.
  • Front- & backend functions to control data, apply business logic or adjust forms dynamically.
  • Functions for modern end-to-end encryption (E2EE).
  • Freely configurable REST APIs.
  • CSV imports and exports.
  • Email processing for incoming and email generation for outgoing messages.
  • PDF generation from data inside your applications.

REI3 is a free and open source low-code platform with community as well as enterprise support options, where desired.

Official Links