OK this is getting irritating. It seems that there is a trend for shoving lots of software in a single installer. First, Microsoft with Windows Live Installer and now Google with Google Updater. I just want to give a small message to the guys working on those installers ("STOP WHATEVER YOU ARE DOING").
Fortunately there is still some hope, www.filehippo.com to the resuce. Just go there and search for your favorite freeware and you'll get all the standalone installers you need.
Example: Windows Live Messenger Standalone