Description: Website providing free-of-charge software downloads (PC programs and mobile apps), with reviews and tutorials of the programs.
How it works: Simply access the website, search for the desired program or app and download it.
Devices: Accessible via the main browsers (Chrome, Safari, Firefox and Internet Explorer) using a computer, mobile or tablet.
Advertising: Yes.
100% free.
Description: Website The Google marketplace for downloading apps to Android devices.
How it works: Access to the catalogue of available apps via its website and app.
Devices: Any with Android operating system.
Advertising: Yes.
Minimum-term contract: No.
Free: Hundreds of thousands of free apps.
Description: The Apple marketplace for downloading apps to Apple devices.
How it works: Access to the catalogue of available apps via its website and app.
Devices: iPhone, iPod, iPod Touch, iPad and Mac OS X Snow Leopard or later.
Advertising: No.
Minimum-term contract: No.
Free: Hundreds of thousands of free apps.