When comparing PuTTY vs PromptPal, the Slant community recommends PuTTY for most people. In the question“What are the best terminal emulators for Windows?” PuTTY is ranked 10th while PromptPal is ranked 16th.
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.
Pro Tabbed UI makes the user's life easier
You can have PromptPal open automatically with the same tabs as used in the most recent session, starting in the same directories.
Pro Multiple shells supported
PromptPal supports several shells (including Powershell) and it allows you to choose which shell to run through the preferences.
Pro Persistent, editable command history
You can mark most used commands in PromptPal as favourites.
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 Lacks features
It is JUST an SSH client. There are many other options with built in X-servers, Multitabbing etc.
Con Tedious logging/tracing
Its tedious to set up logging and tracing (e.g. for serial connections).
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
Although there's a free trial available, PromptPal is not free to use.