Shellngn - Cloud Based SSH Client vs Ásbrú Connection Manager

Since this tool is cloud-based, there's no need to download and install anything. You can simpy run it from the browser.

Remote desktop your servers from the browser.

SSH1/2, Mosh, FTP, SFTP, VNC, RDP, Telnet, Serial, WebDAV, and IBM 3270/5250

Very active project on their GitHub page with a lot of interactions from all over the world.

Groups and subgroups can be created, and connections put in them, to organize a large amount of connections so that you can get more done with the program
If you were looking for this feature from SecureCRT, it's here

Authentication credentials and SSH keyfile passphrases can be supplied by KeePassX rather than being saved in the application's settings.

Easy access to the local machine's command-line interface is provided by a dedicated tab shown adjacent to the tabs for all remote connections.

All terminals have a command history of some sort, but this is the only one I've seen with a panel on the side that lists it right before your eyes, and allows you to click on any command you see there and have it instantly filled in on the current prompt line for revision or re-execution.

Use different proxies for different simultaneous remote host connections if desired

Most actions that can be performed over SSH can be scripted and set to run on a schedule, automatically upon connection, or in response to a received message or prompt.

Built-in support to split a single tabbed connection display into upper/lower or left/right halves as well as quartered. No need to use tmux, screen or the like.

Application can be minimized or closed to a tray icon to free up taskbar real estate during background operations.

Offers the ability to send a properly formatted "wake-up" packet to a device in the event that it is powered off so that a remote connection can be established.