Rich Text Documents usually have rtf extension, but some programs save them with rtx extension instead. Any program capable of rtf to txt conversion will ne able to perform this conversion, but you may need to rename the suffix first from rtx to rtf.
Convert Rich Text document to Simple text.
We have found 2 software records in our database eligible for .rtx to .txt file format conversion.
Microsoft Windows software - convert rtx to txt on Windows
Notepad++ is very popular free text and source code editor. It supports syntax highlighting and syntax folding for C, C++, HTML, ASP, Java, Pascal, PHP, Cobol, CSS etc. Notepad++ also supports plugins to add new features. It is localized to many languages.
Convert from rtx file
to txt file
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned rtx to txt. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert rtx to txt on OS X
TextEdit is native plain text editor distributed as a part of Mac OS X that can open edit variety types of text files.