1. Picasa
Free software download from Google that helps you: Locate and organize all the photos, Edit and add effects to your photos, Share your photos with others through email, prints, and on the web, and more!
2. Vizualizer Photo Resizer

VPR enables you to batch resize JPG images in a folder, and optional subfolders. It supports different aspect ratios, automatic color correction and grayscale conversion, as well as customizable image dimensions and JPG compression level. Excellent tool for a person or business that needs to edit files prior to uploading on the web.

3. XNView
This image editor can easily change DPI, image size, canvas size; adjust photo brightness, contrast, gamma, hue, and more.
4. PhotoFiltre
PhotoFiltre is a complete image editing and effects package that will amaze you. It comes with many features that rival some commercial packages, as well as additional add-on that can be downloaded from the web site.
5. The GIMP
GIMP is used to process digital graphics and photographs. Typical uses include creating graphics and logos, resizing and cropping photos, altering colors, combining multiple images, removing unwanted image features, and converting between different image formats
6. Scribus
Scribus brings award-winning professional page layout with a combination of "press-ready" output and new approaches to page layout. Underneath the modern and user friendly interface, Scribus supports professional publishing features, such as CMYK color, separations, ICC color management and versatile PDF creation..
7. NVU ("EN-view")
A complete Web Authoring System that rivals programs like FrontPage and Dreamweaver. Nvu (which stands for "new view") makes managing a web site a snap. Now anyone can create web pages and manage a website with no technical expertise or knowledge of HTML.
8. Alexa Traffic Viewer
AlexaTraffic Viewer is a simple interface that pulls the traffic graphs for a list of sites from Alexa.com, and allows you to view the Alexa graph display. You can configure the height/width of the graph, as well as the number of months to display.
9. Tux Paint
Tux Paint is an award-winning drawing program for children ages 3 to 12 (preschool and K-6). It combines an easy-to-use interface, fun sound effects, and an encouraging cartoon mascot who guides children as they use the program.
10. Ink Scape
Inkscape is an vector graphics editor, with capabilities similar to Illustrator, Freehand, CorelDraw, or Xara X using the W3C standard Scalable Vector Graphics (SVG) file format. Supported SVG features include shapes, paths, text, markers, clones, alpha blending, transforms, gradients, patterns, and grouping.
11. Blender
Blender is a free software 3D animation program. It can be used for modelling, UV unwrapping, texturing, rigging, skinning, animating, rendering, particle and other simulating, non-linear editing, compositing, and creating interactive 3D applications.
12. HTML SlideShow
Simple and Practical Makes your slide presentation interesting and professional looking. Lets you take your Digital Photos and quickly transform them into dazzling and powerful presentations to share with your friends and family over the web. If you're looking for a simple method to share some of the thousands of digital photos you've taken with you digital camera then look no further than HTML SlideShow Creator