Note that these packages are from February. For the latest features, install from the Git repository.
Installation:
Download the appropriate package for your operating system and double click it. If using OSX, I recommend moving Lightningbeam into your Applications folder.
Mac users:
Lightningbeam.zip (Snow Leopard/Lion)
Lightningbeam.zip (Leopard)
Linux users:
Lightningbeam.deb (Ubuntu/Mint/Debian)
Lightningbeam.rpm (Fedora/OpenSUSE
Lightningbeam.tgz (Slackware/Zenwalk)
Windows users:
Lightningbeam.msi