I have installed Calibre, the perfect ebook management program, on a fresh install of Xfce using the Linux binary installer from the official website and I found no entry for Calibre on the applications menu.
A menu entry for Calibre that works also under Xfce
No menu entry, so, to solve this issue I have created a .desktop file for Calibre.
Check if you have the ‘applications’ folder in
$ ls -lsa ~/.local/share/
If not, create it:
$ mkdir ~/.local/share/applications
After that, you can put a .desktop file in it:
$ vi ~/.local/share/applications/calibre.desktop
And write in it the following lines:
Obviously, you may need to modify the paths in that file to match your Calibre install location. To find more about Calibre, go to the official website at https://calibre-ebook.com/ or read the article documentation at Wikipedia.