ATCalc

Customizable scientific and graphic calculator

OpalCalc

Multiline calculator that integrates natural language

Asynx Planetarium

The Universe from your computer

Virtual Moon Atlas

Complete and appealing virtual atlas of the Moon

Khi3

Complete scientific calculator with plenty of options

Stellarium

Interesting application that lets you see the universe on your computer

SpeedCrunch

Mathematical calculations within everyone's grasp

WinStars

Put a planetarium on your PC's desktop

Asteroid Data Hunter

Become the best asteroid hunter

Versaverter

Easily convert measurement units

Celestia

Travel around the Universe from your PC

Calculator

Carry out the fastest maths calculations

Moffsoft FreeCalc

Useful calculator similar to that of Windows

PowerToy Calc

A much more complete version of the Windows Calculator

Sky Charts

Hundreds of star charts in a single program

OpenUniverse

Discover the Universe using your computer screen as a telescope

Dropbox

Store all your files on the cloud

MediaFire Desktop

Share files with your devices and other users

Google Backup and Sync

Backups for your files on Google Drive and Google Photos

Send Anywhere

Quickly and safely send files between devices

SendSpace

Send files to whoever you want

Google Drive

Google's cloud storage service

4shared Desktop

Store your files on the cloud

OneDrive

Microsoft's application for cloud storage

Yandex.Disk

Store documents, photos, and videos on the cloud

Filemail

Send large files from your computer

iCloud

Manage all your iPhone's contents

Proton Drive

A secure and private cloud storage service

TransferNow

Tool to transfer files to different devices

MEGAsync

The official MEGA client for PC

MEGA Privacy

Access your MEGA account from Windows