PuTTY is one of the big guys in the SSH and Telnet clients bunch with added abilities to connect through rlogin as well as raw TCP protocols to other computers. It also features an xterm terminal emulator in order to provide an effective environment for advanced users.
PuTTY Portable resembles the same great features while keeping its settings in the same place as the application, thus assuring you that none of them are written in the registry or the disk of the computer you are using it on. This makes it possible for you to run it from your removable flash drive or external hard drive.
One thing you must make sure of is that you can enjoy PuTTY within the legal boundaries of your country as it may interfere with both domestic and international cryptography laws from countries such as China, Singapore, Vietnam, Mongolia, Kazakhstan, Pakistan, Tunisia or Belarus.
PuTTY starts up revealing its comprehensive configuration panel to aid you customize and manage sessions and connections alongside the terminal and the window that wraps it in. You can easily opt for the connection type (Raw, Telnet, Rlogin, SSH and Serial) and set logging options for the currently selected session.
The Terminal section refers to various general settings as well as line discipline and remote-controlled printing. You may also set keyboard actions, alarms and advanced terminal features, while tweaking the appearance, behavior, translation or colors of the window. The Connection area allows customization of Low-level TCP connections, Internet protocol version, Login and Terminal details, Environment variables, Proxy type and other protocol-specific adjustments.
Once the connection is set up, you can control and use the resources of the computer that you linked to in a matter of seconds. PuTTY stores the hosts and their corresponding settings in order to facilitate fast yet accurate switches between machines and even supports most of the encryption algorithms such as AES, DES, Blowfish, 3DES or Arcfour.
PuTTY grants you control using the SSH encryption key and the protocol version, while providing SCP and SFTP clients accessible through command-line. It also supports X11 forwarding in addition to local, remote or dynamic port forwarding, the IPv6 protocol and authentication using public-keys.
The bottom line presents PuTTY as a vital application for experienced users in need of a sturdy yet fully-customizable environment for their PC-to-PC secure connections. Its wide-ranging array of supported protocols together with its execution speed make it worthy of its top spot within Softpedia’s Telnet/SSH Clients category.

What's New in This Release:
· Security fix: prevent a nefarious SSH server or network attacker from crashing PuTTY at startup in three different ways by presenting a maliciously constructed public key and signature.
· Security fix: PuTTY no longer retains the private half of users' keys in memory by mistake after authenticating with them.
· Revamped the internal configuration storage system to remove all fixed arbitrary limits on string lengths. In particular, there should now no longer be an unreasonably small limit on the number of port forwardings PuTTY can store.
· Port-forwarded TCP connections which close one direction before the other should now be reliably supported, with EOF propagated independently in the two directions. This also fixes some instances of port-forwarding data corruption (if the corruption consisted of losing data from the very end of the connection) and some instances of PuTTY failing to close when the session is over (because it wrongly thought a forwarding channel was still active when...