You may find this site useful (it's a survey of cryptography laws in many countries) but I can't vouch for its correctness. I believe it is legal to use PuTTY, PSCP, PSFTP and Plink in England and Wales and in many other countries, but I am not a lawyer and so if in doubt you should seek legal advice before downloading it. Legal Warning: Use of PuTTY, PSCP, PSFTP and Plink is illegal in countries where encryption is outlawed. The Unix tools can now connect directly to a Unix-domain socket.PuTTYgen now supports alternative provable-prime generation algorithm for RSA and DSA.New protocols: bare ssh-connection layer for use over already-secure IPC channels, and SUPDUP for talking to very old systems such as PDP-10s.Terminal now supports ESC [ 9 m for strikethrough text.Upgraded private key file format to PPK3, with improved passphrase hashing and no use of SHA-1.Upgraded default SSH key fingerprint format to OpenSSH-style SHA-256.Pageant now supports loading a key still encrypted, and decrypting it later by prompting for the passphrase on first use.
TERATERM FOR ANDROID WINDOWS
PuTTY is a client program for the SSH, Telnet and Rlogin network protocols.
TERATERM FOR ANDROID FREE
PuTTY is a free implementation of Telnet and SSH for Windows and Unix platforms, along with an xterm terminal emulator.