Many of the mentioned applications have free software compatible licenses such as GPLv2 or GPLv3. Comparison between free, libre and open source software is mainly based on license choose in the projects rather than labeling with common terms, I think.
Authored Comments
There's also `cowsay` with a lot of fun and humor in it!
```bash
cowsay "Ahoy hoy"
cowthink -d "You left me alone in the field..."
```
Many of the mentioned applications have free software compatible licenses such as GPLv2 or GPLv3. Comparison between free, libre and open source software is mainly based on license choose in the projects rather than labeling with common terms, I think.