Getting Started with Apache NiFi
Also available as:

Downloading and Installing NiFi

NiFi can be downloaded from the HDF Release Notes. There are two packaging options available: a "tarball" that is tailored more to Linux and a zip file that is more applicable for Windows users. Mac OS X users may also use the tarball or can install via Homebrew.

To install via Homebrew, simply run the command brew install nifi.

For users who are not running OS X or do not have Homebrew installed, after downloading the version of NiFi that you would like to use simply extract the archive to the location that you wish to run the application from.