Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
OptinMonster - OptinMonster helps to convert abandoning website visitors into subscribers and customers.
Sketch - Professional digital design for Mac.
Sumo - Free tools to grow your email list.
Affinity Designer - Professional creative software, exclusively for Mac.
POPUPSMART - A no-code tool to increase e-commerce sales, build email lists and engage with your visitors in just 5-minutes.