Picasa

Picasa is software that helps you instantly find, edit and share all the pictures on your PC. Every time you open , it automatically locates all your pictures (even ones you forgot you had) and sorts them into visual albums organized by date with folder names you will recognize. You can drag and drop to arrange your albums and make labels to create new groups. Picasa makes sure your pictures are always organized. Also makes advanced editing simple by putting one-click fixes and powerful effects at your fingertips.Makes it a snap to share your pictures, you can email, print photos home, make gift CDs, instantly share via Hello, and even post pictures on your own blog. The latest version includes Web Albums (along with other improvements), but requires that you request an account from Google.

Is a photo organizer provided by Google .After the installation, Picasa will ask you to scan computer for finding all your images (you can set to scan just some folders like My Documents or My Pictures).
Is competing with other image managers like Adobe Photoshop.Anyway, Adobe is for professionals and other two are from home work and fun.
Main items are :
1. File
- make a new photo album ,import images from other sources ,rename .locate on disk etc.
2. Edit
- allow to cut,copy and paste ,clear or invert selections.
3. View
View small or large thumbnails in Picasa,display in 18 or 24-bit ,set the search options and administrate the image hidden folders .
4. Picture
Picture menu allow to rotate,set auto contrast and auto color ,hide or see the picture properties with this program (size,date etc.)
5. Create
- make a screensaver , make a picture collage ,publish to blogger or make a poster (interesting function).
6. Tools
Contain folder and upload manager functions ,configure pictures or screensavers,set the slideshow and printing options.
7. Help
Have quick link to answers for your possible issues revealed while using it
Allows to create photo albums and group pictures in folders. Graphic options are very well worked . You can send image to email directly from this free software .Can use Gmail account or Outlook Express.Can send to your blog ,export,print or order a printing on Internet (if you do not have a photo printer).
You can add a photo to an album or to a screensaver .
What actions can you perform with this tool to a picture ? Can set the lightness, crop, use auto color or auto contrast and use I am feeling lucky function (the qualities will be automatically done).
You can set :
- shadows
- color temperature
- highlights
- use neutral color picker

Photo Effects are :sepia ,sharpen,glow,saturation and many others .
The zoom function is very good and very easy to use (you have a small screen in the right,near down, were you can drag the picture opened with Picasa and set the zoom (in our out) by dragging the horizontal blue bar in the left (zoom out) or in the right side (zoom in).
You have online support from Google at the address picasa.google.com/support/