"Documents can be saved in TeXmacs, Xml or Scheme format and printed as Pdf or Postscript files. Converters exist for TeX/LaTeX and Html/Mathml. Notice that TeXmacs is not based on TeX/LaTeX." (ib., 2019-10-14)
"SUID program that reduces the risk of security breaches by restricting the running environment of untrusted applications using Linux namespaces and seccomp-bpf. It allows a process and all its descendants to have their own private view of the globally shared kernel resources, such as the network stack, process table, mount table." (ib., 2019-07-16)
Cf. https://wiki.archlinux.org/index.php/Firejail
Free, open source tools to preserve privacy
"Graphical application for generating different color variations of a Oomox (Numix-based), Materia and Arc themes (GTK2, GTK3), Gnome-Colors and Archdroid icons and terminal" (ibd., 2018-10-21)
"CoreFreq is a CPU monitoring software designed for the 64-bits Processors."
"client only bidirectional file synchronizer", used by ownCloud/Nextcloud
"Proprietary peer-to-peer file synchronization tool available for Windows, Mac, Linux, Android, iOS, (...). It can sync files between devices on a local network, or between remote devices over the Internet via a modified version of the BitTorrent protocol." (Wikipedia, 2018-01-21)
"Linux-enabled laptops and desktops"