free remote desktop software
NeoRouter Free Portable Remote Desktop

NeoRouter is a free portable remote desktop client and VPN solution that allows users to securely connect to remote computers and private networks over the internet. It supports remote desktop access, folder sharing, printer sharing, chat, and more.
The full Neo Router package includes VPN server software that must be installed on the computers you intend to connect to. Once the server is set up, the portable NeoRouter RDP client can be run from a USB flash drive to securely connect to those machines from anywhere in the world where you have internet access.
Remote Screen Capture - Kidsnapper

Kidsnapper is a Free Portable Remote Screen Capture software that can be used to send screenshots (snapshots) to a web browser running on a remote computer. It is good for showing things to people remotely (coworkers or customers at a remote location). The utility might also be used to monitor the activity via remote screenshots of children on a remote computer (hence the name).
Brynhildr Portable Remote Desktop

Brynhildr (formerly Zero Remote) is a free, portable remote desktop application for Windows that bundles both a client and server in a single sub-1MB executable. It uses a custom video codec for fast screen transfer and supports encrypted connections, audio transmission, clipboard sharing, file transfer, and multi-monitor sessions - all without installation or a cloud relay server. The current version is 3.6.2.
Quick summary: Run the executable in server mode on the remote PC (set a port and password), run it in client mode on your local machine, enter the remote IP and port, and connect. No accounts, no vendor servers, no session limits. On a LAN this is immediate. Across the internet, port forwarding or a VPN is required on the remote side.
