# BcalcOS Extra Apps & Packages

**URL:** <https://bcalcos.discourse.group/t/bcalcos-extra-apps-packages/52>\
**Category:** More You Know\
**Created:** [September 15, 2026, 4:56pm UTC](https://bcalcos.discourse.group/t/bcalcos-extra-apps-packages/52 "2026-09-15T16:56:41Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![bcalc](https://yyz2.discourse-cdn.com/flex008/user_avatar/bcalcos.discourse.group/bcalc/32/11_2.png) [@bcalc](https://bcalcos.discourse.group/u/bcalc)\
**Post date:** [September 15, 2026, 4:56pm UTC](https://bcalcos.discourse.group/t/bcalcos-extra-apps-packages/52/1 "2026-09-15T16:56:41Z")

</div>

The bcalcos-extra package consists of additional BcalcOS applications that are not part of the core bcalcos-base package along with the BcalcOS theme (Quail GTK) and icon set (Quail Icons).  
  
  
**For Release 1.3:** These have to be installed manually.

```bash
sudo apt update
sudo apt install bcalcos-extra

```

**For Releases 1.3.5 & higher:** These come pre-installed in the ISO.

### Quail System

Quail System is a small system information application that provides an overview of your computer and BcalcOS installation.

 ![quailsystem](https://canada1.discourse-cdn.com/flex008/uploads/bcalcos/original/1X/08880a9b691d811687bd79636f7e2346d2ed8a5f.png)

### Quail Converter

Quail Converter is a simple unit conversion tool for converting between common units of measurement.

 ![quailconverter](https://canada1.discourse-cdn.com/flex008/uploads/bcalcos/original/1X/a8cc3f686e4b6c6f9aeb553cfc3941e3f4e63bf4.png)

### Quail GTK

Quail GTK is based on Clearlooks-Phenix-Sapphire, a theme used in the Devuan desktop environment. BcalcOS redesigned its colors around the BcalcOS palette and made some adjustments to the Xfwm window decorations, including their size and spacing.

 ![appearancestyle](https://canada1.discourse-cdn.com/flex008/uploads/bcalcos/original/1X/08f94012559f2f685b2f01b165ea97e5c0567625.png)

### Quail Icons

Quail Icons is based on the Deepsea icon theme included with Devuan. Its colors have been adapted throughout to complement the BcalcOS palette.

 ![appearanceicons](https://canada1.discourse-cdn.com/flex008/uploads/bcalcos/original/1X/e0b88c7f7eea2adb6ee57333433c41274c8dc181.png)

### Windows Manager

Quail GTK is also available as a selection under the windows manager.

 ![windowmanager](https://canada1.discourse-cdn.com/flex008/uploads/bcalcos/original/1X/e37eb37123c8bb3e6e33c1bdbc5dee0d65bd2be2.png)