I coded a simple program useful to store games offline and do some basic review with variations handling, position editing, possibility to add comments, markers, arrows...
It is not perfect (I'm not responsible of possible bugs if you try to add variations of variations of variations of variations... ) but it is functional and I think it might be of interest for the community.
You can download the software here (for windows):
and the source files here (you need python to run them):
The readme file contains detailed instructions on how to load a game copied from the aagenielsen.dk archive (just copy in a .txt file the list of moves as displayed in the game summary and load it in Fritjof).
Don't hesitate to send me any feedback, suggestion, or report issues. But keep in mind it is an amateur work
Hope you'll find this useful!