Tools->Shapes->Rhombus

tuxpaint

Paint program for young children

Tux Paint is meant to be a simple drawing program for young children. It is not meant as a general-purpose drawing tool. It IS meant to be fun and easy to use. Sound effects and a cartoon character help let the user know what's going on, and keeps them entertained.
3D floor-tilting game

neverball

3D floor-tilting game

In the grand tradition of Marble Madness and Super Monkey Ball, Neverball has you guide a rolling ball through dangerous territory. Balance on narrow bridges, navigate mazes, ride moving platforms, and dodge pushers and shovers to get to the goal. Race against the clock to collect coins to earn extra balls.
Richly-featured Python IDE

spyder

Richly-featured Python IDE

Spyder is a powerful interactive development environment for Python providing many features and facilities, including advanced editing facilities (including tooltips and completion facilities), issue highlighting, interactive testing, debugging and introspection facilities, an embedded console (IPython) supporting graphics and much more.
guest additions iso image for VirtualBox

virtualbox-guest-additions-iso

guest additions iso image for VirtualBox

VirtualBox is a free x86 virtualization solution allowing a wide range of x86 operating systems such as Windows, DOS, BSD or Linux to run on a Linux system.
Sony PlayStation emulator

pcsxr

Sony PlayStation emulator

PCSX is an advanced PlayStation (PSX) emulator, which uses a plugin architecture to provide full support for all components of the PSX. It has full emulation support for gamepads, videos, sound, memory cards, and other important PSX components, and is able to play many games without problems.
Onboard A virtual keyboard

onboard

Simple On-screen Keyboard

On-screen Keyboard (OSK) with macros, easy layout creation and word suggestion.