Versaverter

Easily convert measurement units

Khi3

Complete scientific calculator with plenty of options

Moffsoft FreeCalc

Useful calculator similar to that of Windows

Calculator

Carry out the fastest maths calculations

Stellarium

Interesting application that lets you see the universe on your computer

Celestia

Travel around the Universe from your PC

Virtual Moon Atlas

Complete and appealing virtual atlas of the Moon

Startrails

Obtain photos of the trail left behind by the stars

SpeedCrunch

Mathematical calculations within everyone's grasp

Asteroid Data Hunter

Become the best asteroid hunter

PowerToy Calc

A much more complete version of the Windows Calculator

WinStars

Put a planetarium on your PC's desktop

Sky Charts

Hundreds of star charts in a single program

Asynx Planetarium

The Universe from your computer

OpenUniverse

Discover the Universe using your computer screen as a telescope

ATCalc

Customizable scientific and graphic calculator

Vpn One Click

Connect to the Internet anonymously

VyprVPN

Browse safely with a VPN

AVG Secure VPN

Keep your online activities protected

Cyberghost VPN

Hide your Internet practices behind a VPN

VPN Gate Client

Free and open-source VPN service

Surfshark

Make the Internet a safer place with more freedom

Avast SecureLine VPN

Protect your privacy when browsing the Internet

PureVPN

VPN service for Windows

ZenMate

Browse safely and avoid restrictions

OpenVPN

An open-source VPN

ExpressVPN

Add the VPN service's extension to your browser

Astrill VPN

Browse with a VPN and protect your privacy

NordVPN

The best VPN to browse safely and privately

TunnelBear

Browse the Internet with absolute freedom

Betternet

Free VPN to browse the Internet