Getting a usable Unix-style terminal on a Windows machine used to be miserable. You either installed a bloated emulator or fought with the classic Windows Command Prompt.
The ecosystem is much better now, but developers still argue over the best way to connect to a Linux server. The debate usually centers around three entirely different approaches: the barebones legacy tool (PuTTY), the heavy kitchen-sink suite (MobaXterm), and modern browser-based tools (like SSHDock).
I have used all three extensively in production environments. Here is how they actually hold up.
PuTTY: The Barebones Survivor
If you ask any sysadmin over thirty how they SSH into a server on Windows, they will say PuTTY. It was written in the late 1990s and stubbornly refuses to die.
PuTTY is tiny. It is a single executable that takes up a few megabytes. You double-click it, and it immediately drops you into a connection window. It supports serial connections, raw sockets, and Telnet. It uses practically zero system RAM.
But it looks and feels like software from 1999. There are no tabs. If you want to connect to four servers, you end up with four separate, ugly Windows floating around your desktop.
The most infuriating part is the key management. PuTTY refuses to use standard OpenSSH .pem files. You have to download a separate utility called PuTTYgen, load your standard private key, and convert it into PuTTY's proprietary .ppk format. If you work on a team where everyone else uses Macs or Linux machines, you will constantly fight key format conversions.
MobaXterm: The "Everything but the Kitchen Sink" Suite
MobaXterm is the exact opposite of PuTTY. Instead of doing one thing decently, it tries to do literally everything a network engineer could ever possibly need.
It has tabs. It has a built-in X11 server, meaning if you launch a graphical application on your Linux server, the window will actually render on your Windows desktop. It automatically gives you an SFTP sidebar that syncs to your terminal's current directory, making file transfers effortless. It even ships with a local bash environment (based on Cygwin) so you can run grep and awk on your local Windows files.
The downside is that it is incredibly heavy. The interface is cluttered with macros and network scanners that most developers will never touch. The startup time is noticeably slower than a native terminal.
Worse, the free version of MobaXterm restricts how many saved sessions you can have. Once you hit that arbitrary limit, you either pay for the Professional edition or spend your time deleting old connections to make room for new ones.
SSHDock: The Web-Native Approach
The fundamental problem with both PuTTY and MobaXterm is that they require you to be on your own machine. If you are on a borrowed laptop, a locked-down corporate workstation, or a Chromebook, neither of them will help you.
That is why I built SSHDock. It runs entirely inside your web browser using WebAssembly.
You navigate to a URL, and you have a full terminal emulator. It supports tabs, split panes, and modern features like live CPU metrics built right into the UI. Because it runs in the browser, it bypasses corporate application whitelisting. You do not need administrator privileges to install it. It accepts standard .pem keys natively (no PuTTYgen required), and it encrypts your credentials securely in your browser's local IndexedDB. Your keys never touch a backend server.
It does rely on the browser, meaning if you accidentally close the tab, your session dies. It also does not support X11 forwarding like MobaXterm does.
The Verdict
Use PuTTY if you are configuring a physical router over a serial cable in a server room.
Use MobaXterm if you explicitly need X11 forwarding to run graphical Linux apps on your Windows desktop and you don't mind a cluttered UI.
Use SSHDock for everything else. If you just need a clean, fast terminal to run bash commands, edit configs, or check logs, installing legacy desktop software makes no sense when you can do it directly from a browser tab on any device.