Seecreen (meaning "See Screen" and formerly known as Firnass) is a small, portable, and free remote access program specifically built for on-demand remote access. Advanced features are available, such as session recording, voice chat, and file transfer.
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As you can see, Seecreen has a lot to offer:
Like other remote desktop programs, Seecreen requires two computers to have the same program open: one for the host PC and one for the client. The "host" is referred to as the computer that is being accessed from a remote machine. The "client" is the computer that is performing the remote access.
When you first open it, you'll be asked to sign in. Choose Create a new account so you can keep track of the computers you want to connect to.