The two best terminals in 2025 are Tabby and Wave. The best part is that they are both open source and run on Linux, Mac, and Windows.
Tabby is just perfect and has support for Vault and is great for SSH work. You get great themes and can split your terminal making it very productive. I have used this for a few years now. I could write about all the features, but the Tabby developers have already done this. Here is a screenshot.

Wave is another I love! Again, tons of cool features, open source, and runs on all the major OSes. This one stands out due to the widgets. You can monitor your system or surf the web while working or build your own widgets with web technologies. As before, I am not going to write up a bunch since their site lays it all out. Here’s a screenshot.

I love both of these applications and I think you will too. Hell, I see no reason to mention any others.
If you need some cool apps to run in your terminal, see my list of terminal apps.
Since we are looking at nice looking apps, take a look at these desktop enhancements.