We do not have a download file for the latest version (2.3.1), but you can try downloading it from the developer's site
Download version 1.1 from Mac Informer
Version: 1.1
Date update: Mar 5, 2014
File name: leap_motion_installer_hotfix_public_mac_x64_1.1.3_9188_ah1421.dmg
Size: 85.5 MB