Most were dead ends due to different logging on to account glitches. One site wants your serial number for what I assume is a product you already purchased.
You set up an account and it doesn't work. This just happened to me with Noise ash and a free VST sweetcase electric piano. I tried 3 times but the download link they send you always say's you exceeded your limit on the first try. I emailed support and have not heard back for a week.
The OSL Chorus and the Youlean meter are the only ones I managed a download for. Didn't try them all however.