Sciview is a plugin for the Fiji image analysis software. In order to use sciview, you need to install Fiji first.
Fiji can be downloaded from https://fiji.sc for Windows, macOS, and Linux. Download the application and unpack it to a folder of your choice, then start the application via:
on Winndows: double-clicking on
on macOS: double-click the Fiji icon
on Linux: run the ImageJ script
Fiji says hello: