Customizable toolbar; JPEG2000, FSH, and improved XP support...
New in v4.x:
Lossless JPG Crop, histogram feature, support for FLV format (v4.10); support for PDF export, option to search files, zoom workwise feature, zooming and scrolling now possible in slideshow mode, new effects added (Unsharp Mask, Fish Eye, etc.), new Flash Plugin for Flash 5 or later, option to transfer files by FTP, auto adjust colors feature; support for SIF, PVR, AWD, and VTF formats (v4.00); various other new options and bug fixes for earlier releases; Release Notes - Updated: 10.16.07 (v4.10)
Upgrade Meter:4
New in v3.98:
Optional installation of Google Toolbar and Google Desktop Search apps; new Thumbnail window option: load thumbs from all subfolders; alpha blending effect added for slideshow/fullscreen; plug-in for AFPL Ghostscript: PS, EPS, PDF formats; (see Properties->PlugIns); support for CGM/SVG formats; support for HDR format; new effects (sepia, raindrops, fragment, etc.); new lossless JPG dialog option: Set DPI value; support for 3GP format (Quicktime PlugIn); various other new options and bug fixes for earlier releases; Release Notes - Updated: 12.27.05 Upgrade Meter:4
New in v3.97: Zooming for videos feature; new "Browse Subfolders" dialog; new JPG Transformation dialog option; option to show EXIF data from TIF files; support for for Adobe DNG format, FITS format, Softimage PIC format, and WAL format (Quake 2 textures); improved multiple monitor support; various other new options and bug fixes for earlier releases; Release Notes - Updated: 04.26.05 Upgrade Meter:2
New in v3.95: New TIF and batch options, various other new options and bug fixes for earlier releases; Release Notes - Updated: 10.28.04 Upgrade Meter:N/A
New in v3.92: Option to auto-rotate JPGs according to EXIF info, new advanced batch options (set long/short side, load/save settings), new plug-in for Dicom formats, new options for DigiCam RAW formats, support for CR2/X3F formats, various other minor enhancements and bug fixes; Release Notes - Updated: 08.23.04 Upgrade Meter:2
New in v3.91: Option to enable/disable multiple monitor support, two new command line options, various other enhancements and bug fixes; Release Notes Upgrade Meter:2
New in v3.90: Transparent PNG support, improve contact sheet feature, new command line options, various other enhancements and bug fixes; Release Notes Upgrade Meter:2
New in v3.85: Support for Adobe 8BF filters and JPM, DDS, DXF, and DWG formats; support for WBZ/WBC removed; new options for HTML export; Release NotesUpgrade Meter: 4
New in v3.75: Support for ICS and CDR/CMX formats, improved MPG thumbnail support, RAW saving, various other enhancements and fixes; Release NotesUpgrade Meter: 2
New in v3.70: Create Panorama Image feature; support for MNG/JNG, BodyPaint 3D, MrSID, ECW, MRC, WAD, TTF, RAW, and Canon CRW formats (via plug-ins); customizable toolbar, EXIF plug-in, various other enhancements and bug fixes; Release NotesUpgrade Meter: 4
New in v3.60: Support for JPEG2000 and FSH formats, improved Windows XP compatibility, new HTML export options, uninstall option available, change DPI featureUpgrade Meter: 4
New in v3.50: Copy Shop feature (send image from scanner to printer), improved WMF/EMF reading, new features for thumbnails (rename, right mouse context menu, and drag and drop to folders), support for true color XPM images; Release NotesUpgrade Meter: 4
New in v3.30: Advanced batch option, support for creating multipage TIFFs, new contact sheet thumbnail options, MED/OctaMED sound support, enhanced print optionUpgrade Meter: 4
New in v3.20: New viewing options, directory tree in thumbnail window, proportional scrollbars; support for SGI images, WAP WBMP format, and Filters Unlimited; NotesUpgrade Meter: 4
New in v3.15: New plug-ins for FlashPix, XBM/XPM, and AT&T DjVu formats; improved PhotoCD support; preview in slideshow; improved HTML export; mouse wheel supportUpgrade Meter: 5
Pros: Lightning quick image viewing, excellent multimedia support for most formats, free
Cons: For graphics viewing only - no manipulation/editing tools