Okular
Description: Okular is a versatile document viewer software for KDE. It supports viewing PDFs, EPUBs, ODT, and other document formats. Okular allows annotating, highlighting, commenting on documents as well as filling forms.
Type: software
Pricing: Free
Wiki.js
Description: Wiki.js is an open source wiki software that allows you to run your own private wiki on your server or device. It is designed to be fast, secure, and easy to use.
Type: software
Pricing: Free