Gfxmark is a image watermark software for Windows with which you can watermark your photos or images to protect your work on the internet. Gfxmark is the world first watermark software with intelligent brightness-aware watermark color and brightness-aware watermark opacity, with this feature your watermarked photos will always look good and have a visible watermark which is also not too strident. You can use gfxmark instead of photoshop or lightroom to watermark your photos, it's much faster and you have the brightness-aware option which is not available in any other watermark software.
GFXMark Pro starts from $29.00. GFXMark Pro has also mobile App(s) available.