Upload & Sell: Off
Not familiar with Picassa, but I've been using Irfanview for over 9 years and can vouch for this gem. It can also use PS filters which is cool (for those special effects that only plugins can perform). The basics are pretty good too (auto-adjust color, and also image enhancement capabilities). Launches very quickly as well; it's my main image viewer because of that.
I will add that I paid $15 for this gem since I used it at work at that time, but it is 100% free for personal use. I've had email contact with Irfan Skiljan and he has helped me with certain things in the past. The current version is so much better then the version I first it those many years ago. Also, even now, I get an email from them when an update becomes available. How's that for support.