Emacs is best utilized on a Unix system where it can be easily installed and accessed. It allows for quick editing of files on a system whether you are accessing it locally through the console or remotely via an ssh connection. Once users familiarize themselves with the Emacs shortcuts, it becomes a pretty efficient text manipulation program. On a standard Windows computer, it is less likely to use Emacs for code editing, especially if you have a local repository on your host machine.
UltraEdit is well suited for editing very large files. The macro editor is very powerful and easy to use. If one needs a quick-to-open text file editor, you will find UltraEdit much too slow to load. Compared to some free editors on the market, the basic individual user license is quite expensive.
GNU Emacs is a text editor that can do almost anything that you want to do with it. It is fairly easy to extend the functionality using Emacs Lisp with a large library available.
It can be easily customized using themes as well as custom code to change the look and feel as well as how everything works.
Emacs is old, so it's a little crufty and not too easy to pick up and start using. There is a community package called Spacemacs that simplifies a lot of things that you do with Emacs. It is probably better suited to beginners.
Sometimes, the choices that were made to integrate certain functionality change the basic models for that functionality. This is seen primarily in the version control system support, where multiple version control systems are supported and "unified" to a standard Emacs-y way of doing things. This can be confusing to the new user not familiar with the Emacs way.
Emacs has, as its foundation, a lisp interpreter. This means that the extension language for Emacs is emacs-lisp. Some people find lisp hard to understand and have difficulties writing Emacs extension code, or understanding existing code.
The color coding capacity is rudimentary and keyword based only. A good color coding mechanism should allow context.
With the latest versions, the top menu has a lot of big icons and has a user-friendly kind of look which impacts the actual text window. Most users don't fancy pretty icons and like efficiency over pretty buttons.
As a program UltraEdit comes ready to use out of the box and requires very little setup for it to be extremely useful. It's flexibility among a wide array of tasks and files makes it a go-to for all our troubleshooting and data viewing needs. Timely updates and great support.
Everything that you need to know about Emacs can be found on the internet. There are many Emacs "cheat sheets" that list out all of the shortcuts for Emacs. There are videos on how to use Emacs. Emacs is easily installed using the standard Linux package managers and can also be easily updated through them as well. There are tutorials on how to customize Emacs to your liking.
Of course, Vim is a good contender for comparison as well, so I'll include it. I find Emacs much easier to learn, which will help speed up productivity for newer users. It seems much faster than VIM and VSCode, especially under load. It's highly highly customizable, in ways other editors don't stack up against. Its lack of bloat also is a nice addition to a great product.
I have evaluated Notepad++ as an alternative to UltraEdit. In some cases, such as loading time, Notepad++ is a superior product. However, in terms of editing existing macros, and editing very large text files UltraEdit is a much better product.
