Picasa is one of the best location to upload photos and share and there is also desktop app to upload it. We have covered many tools to download photos from Picasa like Picasa Album Downloader, Google Album etc. Here is another freeware desktop app which can download Picasa albums to your PC- Picasa Grabber. Once downloaded, you can view them offline, from your computer.
The interface is very simple and easy to use. You just need to specify the RSS URL of your web albums. You can get the RSS feed by logging into your account and your album will have an unique URL.
You need to specify the download folder and then you can start the download process. The app is completely portable and can be used from an USB drive as well.
Picasa Grabber is probably the simplest of Picasa album downloaders.