PeerBlock is a tool that allows you to block certain IP addresses from accessing your computer, thus preventing them from spying on you or finding out what you're downloading. You can use it to block not only individual computers but also entire countries. Best of all, you can copy one of the many IP filter lists available on the Internet to give you a head st...

BKChem is a vector graphics application, developed on Python, that lets you create a schematic representation of a chemical compound by hand. Editing compounds is really easy, thanks to bond-by-bond drawing and restrictions in their length and angle. It supports linear formulas, charges, and radicals. You don't need to draw every single compound by hand; BKChe...

Twitter is one of the most important social networks in the world, as it's the main social network for keeping up with current events and seeing what other users are talking about in real time. With this program, you can access your Twitter account without a browser; all you have to do is open this tool on your Windows device. The main use of Twitter is discoverin...

Apple made this multimedia player-organizer popular long ago by putting it on all their mobile devices (iPod, iPad, iPhone). Now, it's a must-have program for anyone who loves music, movies, or books. iTunes is probably the most comprehensive tool there is for organizing and playing music and videos. It also includes the best-known (and legal) store for downloads a...

Serato DJ is a tool for mixing music and although it was specifically designed for a Pioneer DDJ-SX controller, it can also be used with a keyboard and mouse without having the official hardware from this well-known company. With its comprehensive interface, you can use this application to create high-quality mixes for personal and professional purposes alike. The...