Editing JPEG EXIF properties

A freebie that looks good is PhotoME :

Xnview shows EXIF and edits IPTC and XMP.

Faststone Image viewer can view exif information.

http://www.faststone.org/

its a lightweight photoviewer and resembles early ACDSEE in functionality, continually updated.

has autorotate on exif orientation tag..

here's a summary from their website:

An image browser, converter and editor that supports all major graphic formats including BMP, JPEG, JPEG 2000, GIF, PNG, PCX, TIFF, WMF, ICO and TGA. It has a nice array of features such as image viewing, management, comparison, red-eye removal, emailing, resizing, cropping, color adjustments, musical slideshow and much more.