When comparing PuTTY vs ZOC Terminal, the Slant community recommends PuTTY for most people. In the question“What are the best terminal emulators for Windows?” PuTTY is ranked 6th while ZOC Terminal is ranked 7th.
Ranked in these QuestionsQuestion Ranking
Pro De facto standard client for SSH, Telnet and Rlogin
Pro Source code available
Full source available. Compile and modify it yourself.
Zoc provides complete automation of the client using its macro scripting.
Pro Hideable UI
Zoc allows for every UI component except the title bar to be hidden. All features are accessible through the context menu.
Pro Flexibility in platform support
Originally developed for OS/2 (as Zap-O-Comm), Zoc is currently available for Windows and Macintosh.
Pro Tabbed sessions allows for easy navigation
Tabbed sessions mean that multiple items can be contained within a single window and can be easily navigated by the user.
Pro Supports serial and dial-up connections
In addition to telnet, ssh, and rlogin, ZOC supports direct serial connections, modem dialing, and named pipes.
Pro Can view and send to all sessions at once
Offers a thumbnail view of all session in thumbnails and type commands to all sessions at the same time.
Con Tedious logging/tracing
Its tedious to set up logging and tracing (e.g. for serial connections).
Con Lacks features
It is JUST an SSH client. There are many other options with built in X-servers, Multitabbing etc.
Con Can not save passwords
Anyway, you can use "PuTTYgen" to generate a key pair, then use "Pageant" to do a password-less SSH remote login.
Con No global settings
If you want to change a setting for all your connections, you'd have to do it individually.
Con No login scripting
Con Not free
Zoc requires a commercial license in order to use it, implying that it's not free.