On Linux install via pip, e.g. on Ubuntu:
sudo apt install python-pip python-tk libboost-all-dev libsqlite3-dev pip install kombilo
To update, use pip install -U kombilo instead.
On Mac OS X, I would expect that this works as well, in principle, but might need some more fiddling. Update: Version 0.8.3 should run OK on Macs.
On Windows, you have the following two options:
The clean way is to install Python 2.7 from python.org yourself, and then install the Kombilo package by typing, on a command prompt:
c:\Python27\Scripts\pip.exe install kombilo
This installs an executable kombilo.exe in c:\Python27\Scripts\ and allows you to update later by downloading only Kombilo itself, rather than Kombilo+Python.
Alternatively, use the installer. It will install install Kombilo as a stand-alone package (but with Python integrated inside, so you do not save much space compared with the previous option), and install a desktop icon and/or a start menu entry, at your choice.
Link removed - use Kombilo 0.8.2 instead Windows installer. (Update on Nov 2: The installer has been "signed" to ensure its authenticity.) Tested on Windows 7 SP1, Windows 8.1, Windows 10. Since development is done on Linux, feedback is particularly welcome.