List 13 applications that you think are open source, but are not

The article on It's FOSS discusses the most popular open-source software programs and their alternatives across various categories. In today's world, open-source software is vital as it provides users with greater control and transparency. The article highlights that utilizing such programs can help users avoid the rising costs of commercial licenses. Notably, it mentions popular applications such as GIMP as a substitute for Photoshop, and LibreOffice as an alternative to Microsoft Office. These programs allow users to easily customize their working environment. It's worth exploring these alternatives, as they not only support technological development but also offer the potential for significant cost savings.