Watermark.ink - Online Photo Watermarker
PlutoPDF - A URL to PDF converter wrapped behind a simple API.
Watermark - Watermark is an online tool to watermark content and copyright protect photos, videos, and documents.
Diff Checker - Diff Checker is a free online diff tool that quickly and easily gives you the text differences...
Fastwatermark - Fastest way to watermark multiple images for photographers.
RatherListen - Convert URLs, PDFs, & photos to clear spoken audio