PowerToy Calc

A much more complete version of the Windows Calculator

SpeedCrunch

Mathematical calculations within everyone's grasp

ATCalc

Customizable scientific and graphic calculator

Khi3

Complete scientific calculator with plenty of options

Sky Charts

Hundreds of star charts in a single program

Versaverter

Easily convert measurement units

Celestia

Travel around the Universe from your PC

Moffsoft FreeCalc

Useful calculator similar to that of Windows

Scalextric Track Length Calculator

Measure the length of your slot tracks

Asynx Planetarium

The Universe from your computer

Stellarium

Interesting application that lets you see the universe on your computer

OpalCalc

Multiline calculator that integrates natural language

Abacux

Calculus program developed for chemists, physicists and architects

Calculator

Carry out the fastest maths calculations

Asteroid Data Hunter

Become the best asteroid hunter

Virtual Moon Atlas

Complete and appealing virtual atlas of the Moon

WinSetupFromUSB

Install Windows from a USB stick

WindowsAndroid

The real Android operating system emulator

Windows 7

The successor of Windows Vista

Hiren's BootCD

Live CD with plenty of maintenance tools

iPadian

iOS simulator for Windows

Windows 10 Media Creation Tool

Create a copy of Windows 10

Windows 11 Media Creation Tool

Create a bootable device for Windows 11

Ninite

Automatic application updater

Windows 11

A new Windows with significant design and productivity improvements

Vistalizator

Change the language of your Windows Vista or Windows 7

Windows 8

The failed successor of Windows 7

Toolwiz TimeFreeze

Freeze your system to avoid that it being infected

RemoveWGA

Remove Windows Genuine Advantage notifications

Windows 10

The latest version of Microsoft's operating system

Linux Live USB Creator

Create a LiveUSB with any Linux distro