Tiny PXE Server - Small portable standalone PXE server (dhcp+tftp+http)
CCProxy - Want to share Internet connection? Get every computer online through a single Internet connection?
AOMEI PXE Boot - Free AOMEI PXE Boot is one of the best PXE boot software which enables you to start up multiple client-side computers within LAN through the network from ISO image file on a server-side computer for system maintenance and optimization.
Apache Traffic Server - Fast, scalable and extensible HTTP/S 2 and 1.1 compliant caching proxy server.
TFTPD32 - A free tftp and dhcp server for windows, freeware tftp server
FreeProxy - Feature summary from website:* Internet connection sharing with demand dialling