Masterplan is an application that helps you to build D&D 4E campaigns.
You can outline your plot structure, build encounters and maps, detail your campaign world, and create custom creatures and NPCs.
To install Masterplan, get the Masterplan.zip file from the latest release, which can be found here:
https://github.com/andyaiken/masterplan/releases/latest
Extract all the files in this zip into their own folder, and run Masterplan.exe.
Prerequisites You'll need to have Visual Studio installed (community edition is fine), and the Microsoft Visual Studio Installer Projects extension loaded.
To build Masterplan, open Masterplan.sln in Visual Studio and build the Masterplan project (F6).
Bear in mind that every time you build Masterplan in Visual Studio, the library files are copied from ./Libraries into the output folder, so any changes you make to these libraries won't be retained.
The other project in the solution is called Setup, which creates an installer.
If you find a bug, or you think of a feature that should be in Masterplan, please add something to the GitHub Issues tab (https://github.com/andyaiken/masterplan/issues).
If you're a coder, feel free to submit pull requests to the main repo.