Text Echo deals with a few special niches in the very big field of text editors and word processors. If you happen to need to do any of the things that it specialises in, it may be a useful addition to your tool set for working with text.
Hopefully, what it can do, it does well. But, to avoid disappointment for those who may download the program and expect more of it than it is able to do, it may help to make clear what it's limitations are.
What Text Echo is not
It is not a word processor. You can't add images, or tables to your documents for instance, or customise the layout of the text on the page.
You can change the text colour and size, and what it can do, it does in a reasonably intuitive way. But if you do any advanced word processing you will soon exhaust its capabilities.
It can't read Word documents (.doc files).
However it can read documents if saved as rich text (.rtf files). Also you can save your documents from Text Echo as rich text, and open them in other programs.
It has limited support for unicode at present.
Unicode is the character set used for displaying most of the special characters and languages nowadays. A program that can handle unicode can display any character in almost any of the world's languages (with more added as time goes on) and almost any kind of special symbol for maths, music etc.
Text Echo can open and save rich text with unicode characters in it, and you can copy / paste a unicode character from another program or document into TFE, provided the current font has glyphs for a suitable part of the range of Unicode characters.
You can also use the shortcut keys in TFE to insert particular unicode characters.
You can also see the clipboard text in unicode.
But TFE can't echo web pages as unicode.
It also can't currently accept unicode characters for file names
Also you can't use unicode characters for the Search and replace options, or for the spell checker (because it is a non unicode build - the Aspell spell checker itself is able to handle unicode).
This does have the advantage that TFE can run on older operating systems such as Windows 95/98 which don't have unicode support built in.
My "to do" list for TFE includes the idea to do a complete unicode build - as an alternative download - which would be able to run on Win 2K and XP and later operating systems, and would be able to do those things - but that won't be for some time if I do it.