To get a full list of linux applications, Open the Terminal app. Type the following command: apt list --installed To see if you have a particular app, type this command: dpkg --get-selections | grep tkinter For more commands, check out this AskUbuntu.com thread. . As of Chrome OS version 77, my Acer R 13 has these linux apps: adduser/oldstable,now 3.115 all [installed] adwaita-icon-theme/oldstable,now 3.22.0-1+deb9u1 all [installed,automatic] albatross-gtk-theme/oldstable,now 1.7.4-1 all [installed,automatic] apache2/oldstable,oldstable,now 2.4.25-3+deb9u8 arm64 [installed] apache2-bin/oldstable,oldstable,now 2.4.25-3+deb9u8 arm64 [installed,automatic] apache2-data/oldstable,oldstable,now 2.4.25-3+deb9u8 all [installed,automatic] apache2-utils/oldstable,oldstable,now 2.4.25-3+deb9u8 arm64 [installed,automatic] apt/oldstable,oldstable,now 1.4.9 arm64 [installed] apt-transport-https/oldstable,oldstable,now 1.4.9 arm64 [installed] at-spi2-core/oldstable,now 2.22