These are portable versions: they can be run from a USB drive.

All files available for download are compressed in 7-zip format.
sources
Installer (DMG) file:
File size: 65 MB
ic1 ic1
Windows
File size: 31.5 MB
ic1 ic1
Linux
You're running Debian, Ubuntu or Archlinux ? ZeGrapher is available in your repository!

For 32 bit system architecture
File size: 480 kB
ic1 ic1

For 64 bit system architecture
File size: 480 kB
ic1 ic1
sources
Distributed under the GNU GPL version 3 license
ic1 ic1 GitHub