Watermark.ink - Online Photo Watermarker
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Watermark - Watermark is an online tool to watermark content and copyright protect photos, videos, and documents.
Batch Image Resizer - Resize, crop, shrink, flip, exif-rotate, convert, enhance, process multiple pictures and photos with professional software! 120+ Actions, 30+ Image Formats
textmark - Protect your content with an invisible, trackable watermark.
Phatch - Phatch = Photo & Batch!