Free pgm software for windows

BackgroundManager is a little application used for changing the Windows Desktop Wallpaper at certain time periods.
Main features:
- recurrence patterns are possible from minutes to months or each WindowsStart
- supported pictureformats : BMP,DIB,RLE,JPG,JPEG,JIF,PNG,PCT,TIF,EPS,TGA,WMF,EMF,PCX,PGM,GIF
- support pictures directly from the WWW
- set automatically the best alignment-configuration for each picture
- stretch pictures to fit desktop - no distortion any more
- Picturelist-Editor with many functions (search, add directories)
- Thumbnail-Preview
- many resize and alignment configurations
- random wallpaper picture
- multiple picturelists
- provides "Add to Picturelist" and "Set as Wallpaper" commands at the contextmenu of supported picturefiles
- provides most usefull commands from a systemtray icon

Picture Merge Genius is a simple and easy-to-use program for merging your photos, images and pictures. The software can combine multiple pictures into one in different ways, In the new picture you can also set the size and position of the source files.
Picture Merge Genius is useful for computer painters, ebay seller, photographer, designers and family entertainment.
Picture Merge Genius support more than 40 picture file format(JPEG, BMP, TIFF, PCX, PNG, TGA, PBM, PGM, PPM, GIF, VDA, ICB, VST, PIX, WMF, FAX, PSD, PDD, PSP, CUT and PCD etc.).

Profile Picture Genius is a free picture cutting and resizing program, which allows you to create a custom profile avatar for your favorite social forum or instant messenger tools (MySpace, MSN,Skype, Flickr, YouTube, Blogger, phpBB Forum, vBulletin Forum, IPB Forum , for example).
Profile Picture Genius support more than 40 picture file formats: BMP, JPEG, PNG, TIFF, PCX, TGA, PBM, PGM, PPM, GIF, VDA, ICB, VST, PIX, WMF, FAX, PSD, PDD, PSP, CUT and PCD etc.)
Profile Picture Genius can save your images in JPEG, PNG, GIF or BMP formats.

PicWalker is a fast, easy to use graphic viewer/editor/converter with unique features.
PicWalker will remember last file opened in each directory, and many other things, so you can easily get back to where you were.
Main features:
- Continuous pages options, horizontally or vertically.
- View pictures in archived files (ace, cab, rar, tar, and zip).
- Automatic scrolling.
- Alignment option.
- Explorer view, with customizable thumbnail size and quality.
- Zoom image with several different resampling filters (gaussian, mitchell, lanczos, etc.).
- Clipboard operation: Copy, paste, and combine images.
- Built-in editor with preview and multiple undo.
- Batch convert and manipulate.
- Customizable layout with docking windows and toolbars.
- Customizable keyboard and mouse shortcuts.
- Duplicate file finder.
- Slide show with transition effects.
- Favorites.
- History of the last opened file in each directory.
- Support for plug-ins .
- Display BMP, GIF, ICO, JPG, JPEG2000, PBM, PCX, PGM, PNG, PPM, PSD, RAS, SGI, TIF, TGA, and WBMP files.
- Save as BMP, GIF, JPG, PBM, PCX, PGM, PNG, PPM, RAS, SGI and TGA.

4FreeImage is a useful and free viewer application which shows you images one by one or in a slide show.
The following files can be shown: *.bmp; *.jpg; *.ico; *.pcd; *.psd; *.pcx; *.ppm; *.pgm; *.pbm; *.png; *.ras; *.tga; *.tif
The program is also able to save them as a bitmap.

SmartMorph is developed as a fast, advanced morphing application.
The program can morph one picture to another or make funny effects with one picture. It allows the user to resize and crop the pictures to achieve the best results when morphing.
The resulting animation can be computed and displayed real-time or it can be saved to disk.
Main features:
- Morphing one picture to another.
- Warping of one picture.
- Read/write BMP, WMF, EMF, JPEG, PNG, MNG, GIF and PCX images. If MeeSoft Image Analyzer is installed, JPEG 2000, RAS, PNM, PGM and PPM images are also supported.
- Resize/crop images for optimal morph quality.
- Animation output as AVI video, animated GIF or sequence of BMP, JPG, MNG, PNG or PCX images.
- Scanner and printer support.
- Filters and color correction for improving image quality.