Inkscape is a professional vector graphics editor for Linux, Windows and macOS. It's free and open source.
Visual, text-mode file manager that works in consoles, over SSH and via remote shells.
Files (Nautilus) is a file manager designed to fit the Gnome desktop design and behaviour, giving the user a simple way to navigate and manage its files.
Thunar is a new modern file manager for the Xfce Desktop Environment. Thunar has been designed from the ground up to be fast and easy-to-use.
Leafpad is a lightweight text editor that emphasizes simplicity.
zathura is a highly customizable and functional PDF viewer based on the poppler rendering library and the gtk+ toolkit.
Krusader is an advanced twin panel (commander style) file manager for KDE Plasma and other desktops in the *nix world.
Gucharmap is the GNOME Character Map, based on the Unicode Character Database.Features: - Browse characters by Unicode block or script
Visual Binary Diff (VBinDiff) displays files in hex & ASCII and can highlight the differences between 2 files.