PuTTY is not only free, but open source. PuTTY can also do telnet, rlogin, and raw TCP. PuTTY has built in support for the secure copy (scp) program.
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Jack Wallen is an award-winning writer for TechRepublic and Linux.com. He’s an avid promoter of open source and the voice of The Android Expert. For more news about Jack Wallen, visit his website jackwallen.com.