What are some alternatives?
When comparing Sketch and WonderFox Photo Watermark, you can also consider the following products
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
LogoMakr - Create & design your logo for free using an easy logo maker tool. Choose from hundreds of fonts and icons. Then just save your new logo on to your computer! Watch our video tutorial on how to create your logo.
Affinity Designer - Professional creative software, exclusively for Mac.
LogoFreeway - 100% free logo creator
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
DesignEvo Logo Maker - DesignEvo's logo maker helps you create custom logos in minutes for free, no design experience needed. Try with millions of icons and 100+ fonts immediately!