When comparing PuTTY vs Terminus, the Slant community recommends Terminus for most people. In the question“What are the best terminal emulators for Windows?” Terminus is ranked 5th while PuTTY is ranked 8th.
Ranked in these QuestionsQuestion Ranking
Pro De facto standard client for SSH, Telnet and Rlogin
PuTTY is one of the oldest and most popular clients. It has earned the trust of a great number of users over a long period by being reliable, offering useful features and helpful support. It got into the 15 Essential Open Source Tools for Windows Admins list by InfoWorld.
Pro Can be used on any Windows computer, even without admin rights
Pro Lightweight and portable
Doesn't require much resources (memory and hard-disk). Can even be run on a system by just downloading without install.
Pro Source code available
Full source available. Compile and modify it yourself.
Pro It looks just beautiful
Pro It's open source
This helps the community to move software forward and to make it even better.
Pro Under active development
Hyper development has basically stalled out.
Pro It comes with plugins
Pro Is cross-platform
Even the question was "...for Windows", it's nice if you can use your tools over different platforms.
A lot of things can be easily configured, e.g. color theme, size, window frame behavior, tab location, cursor style, hotkeys, etc.
Pro Integrated GitBash, Cmd, PowerShell, and WSL
Pro Integrates with git-bash with a simple toggle in the interface
Pro Excellent interface
At start opens last session terminals. Also has terminal tabs.
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 Ugly design, too simple
Looks very dated. Does the basic functions very well, but not much more.
Con Lacks features
It is JUST an SSH client. There are many other options with built in X-servers, Multitabbing, etc.
Con only one session
cannot open a second session in the same window
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 Some functions still fail
It's huge. The amount of resources it consumes is not justifiable.
Con Slow with input lag
Sadly, Electron strikes again. The input lag is noticeable and annoying. Startup also takes like 2 seconds or more (On an i7 from 2016 with SSD).
Con Cannot remove the default profiles
For example, you installed Arch Linux for Windows Subsystem for Linux some time ago, but now you have deleted it and currently use Ubuntu on WSL. After that, if you decide to try this terminal emulator, you'll find Arch there without an option to remove the profiles already included in Terminus.
Con Easy to be confused with different brands of the same or similar name
Like Terminus (Russian production company), Terminus (font) or Termius (SSH client).
Con No multi window support
Can't split tabs into multiple windows.