In some cases, ads may be show to the users.
Basically, a product is offered Free to Play (Freemium) and the user can decide if he wants to pay the money (Premium) for additional features, services, virtual or physical goods that expand the functionality of the game. This license is commonly used for video games and it allows users to download and play the game for free.
SOLAR PUTTY FOR MAC SOFTWARE
There are many different open source licenses but they all must comply with the Open Source Definition - in brief: the software can be freely used, modified and shared. Programs released under this license can be used at no cost for both personal and commercial purposes. Open Source software is software with source code that anyone can inspect, modify or enhance. Freeware products can be used free of charge for both personal and professional (commercial use).
SOLAR PUTTY FOR MAC PORTABLE
In really simple terms: you run PuTTY Portable on a Windows machine and tell it to connect to (for example) a Unix machine. PuTTY Portable implements the client end of that session: the end at which the session is displayed, rather than the end at which it runs. These protocols are all used to run a remote session on a computer, over a network. It is written and maintained primarily by Simon Tatham. PuTTY Portable is a free implementation of Telnet and SSH for Windows and Unix platforms, along with an xterm terminal emulator.