Celestia

Travel around the Universe from your PC

Stellarium

Interesting application that lets you see the universe on your computer

ATCalc

Customizable scientific and graphic calculator

Khi3

Complete scientific calculator with plenty of options

Versaverter

Easily convert measurement units

OpalCalc

Multiline calculator that integrates natural language

Sky Charts

Hundreds of star charts in a single program

PowerToy Calc

A much more complete version of the Windows Calculator

WinStars

Put a planetarium on your PC's desktop

Calculator

Carry out the fastest maths calculations

Asynx Planetarium

The Universe from your computer

Virtual Moon Atlas

Complete and appealing virtual atlas of the Moon

SpeedCrunch

Mathematical calculations within everyone's grasp

Asteroid Data Hunter

Become the best asteroid hunter

Moffsoft FreeCalc

Useful calculator similar to that of Windows

OpenUniverse

Discover the Universe using your computer screen as a telescope

iCloud

Manage all your iPhone's contents

MEGA Privacy

Access your MEGA account from Windows

Google Drive

Google's cloud storage service

MediaFire Desktop

Share files with your devices and other users

Proton Drive

A secure and private cloud storage service

MEGAsync

The official MEGA client for PC

Dropbox

Store all your files on the cloud

Yandex.Disk

Store documents, photos, and videos on the cloud

Send Anywhere

Quickly and safely send files between devices

SendSpace

Send files to whoever you want

4shared Desktop

Store your files on the cloud

Google Backup and Sync

Backups for your files on Google Drive and Google Photos

Filemail

Send large files from your computer

OneDrive

Microsoft's application for cloud storage

TransferNow

Tool to transfer files to different devices