Blazing fast Houdini documentation reader
A free and open-source desktop app that reads the documentation of the Houdini you have installed. Search it, browse it, and open it from Houdini with F1, in a fraction of a second.
Houdini's help is thorough, but not the handiest to navigate through. Each query waits on a sluggish local help server, and a search means a trip to the browser.
NodebookMD reads the same pages from your install, indexes them once, and displays them in a clean, fast interface. It's completely offline, making it faster and more secure.