Awesome Open Source
Awesome Open Source


Heimer is a desktop application for creating mind maps and other suitable diagrams. It's written in Qt and targeted for Linux and Windows.

Here is a simple mind map of Heimer itself running on Ubuntu 18.04:

Heimer screenshot

A very short introduction video to Heimer 1.9.0


  • Adjustable grid
  • Automatic layout optimization
  • Easy-to-use UI
  • Export to PNG or SVG
  • Forever 100% free
  • Full undo/redo
  • Nice animations
  • Quickly add node text and edge labels
  • Save/load in XML-based .ALZ-files
  • Translations in English (default), Finnish, French, Italian, Dutch
  • Very fast
  • Zoom in/out/fit
  • Zoom with mouse wheel


Heimer's source code is licensed under GNU GPLv3. See COPYING for the complete license text.

All image files, except where otherwise noted, are licensed under CC BY-SA 3.0:


See for available packages.

On Linux distributions that support universal Snap packages you can install Heimer like this:

$ snap install heimer

For more information see and

Snap is the recommended way to install Heimer on Linux.

Building the project

Currently the build depends on Qt5 only (qt5-default, qttools5-dev-tools, qttools5-dev, libqt5svg5-dev packages on Ubuntu).

The "official" build system for Linux is CMake although qmake project files are also provided.

Building for Linux in a nutshell:

$ mkdir build && cd build

$ cmake ..

$ make -j4

Run unit tests:

$ ctest

Install locally:

$ sudo make install

Debian package (.deb) can be created like this:

$ cpack -G DEB

See Jenkinsfile on how to build other packages in Docker.


Get A Weekly Email With Trending Projects For These Topics
No Spam. Unsubscribe easily at any time.
c-plus-plus (17,339
editor (446
learning (332
qt (331
cplusplus (250
productivity (234
qt5 (202
diagram (89
note-taking (73
flowchart (41
linux-app (41
mindmap (39
optimizer (28

Find Open Source By Browsing 7,000 Topics Across 59 Categories