The best alternatives to Termpage are Hyper, Warp, and Microsoft Terminal. If these 3 options don't work for you, we've listed a few more alternatives below.
Hyper is an open-source and extensible terminal emulator available on MacOS, Windows, and Linux. It's built using web technologies, specifically Electron (the same platform that powers Atom, Slack, and Brave).
Windows Terminal is a terminal emulator for Windows 10 written by Microsoft. It includes support for the Command Prompt, PowerShell, WSL and SSH. After the initial source code release on GitHub, a preview release was first published to the Microsoft Store on June 21, 2019.
iTerm2 is a replacement for Terminal and the successor to iTerm. It works on Macs with macOS 10.14 or newer. iTerm2 brings the terminal into the modern age with features you never knew you always wanted.
WTF is a personal information dashboard for your terminal. It allows you to monitor systems, services, and important information that you otherwise might keep browser tabs open for, the kinds of things you don’t always need visible.