"The Keep" is amazing. It has allowed me to finally get myself organized as a DM. I have put my PDF files of campaign materials I created, into it, along with HTML copies of the core rulebooks, so that I can have access to them all, with just a few clicks, opening them within the program itself, no external launcher needed. My game notes are entered during the game, so they are up-to-date. The program saves everything to disk, auto-magically, so I can just close it when I am done (notes can be backed up, and exported/imported between PC's, allowing back-up's). It is truly amazing.
The "Fractal Mapper" is powerful... It is not too difficult to learn, but it has a curve, and it will take you some time. The free-hand drawing capabilities are challenging: I created hand-drawn maps, 30 years ago, which I have photographed, and Xeroxed. To convert them to the "Fractal Mapper", is challenging to get them to look the same. It would be much, much easier to let the program create new coastlines for me, but the maps are too familiar to me, and to my players, so I have to struggle with this part.
Scaling of the maps is a bit challenging. It can be used for world-sized maps, or close-in maps, of, say, a hamlet. It's all possible, but there are some subtle nuances which need to be learned. Probably the neatest thing, though, is to tell it to take your 2D map, and make it into a spinning globe graphic -- truly astounding to see your world spinning on the screen!
These programs are a home-run, completely out of the park! They have some add-on's, including a PC record sheet application which allows you to design a custom PC Record Sheet, but that is rather complex to set up a record sheet with. Tried, but it was more labor than I wanted to invest in it. It also features random name generators, and other random generators -- may prove useful to you, or not. They are, however, icing on the cake! If your budget will allow the bundle purchase, go for it. They are extremely useful, and reasonably priced for what you get. Cheers!