Plain text editor SimpleEditorFree.

Editor features:
* create, open, modify and save files in different encodings (txt, xml, html, css, svg files...)
* search and replace in file
* undo the last changes (see Notes)
* send the contents of the editor window (by e-mail, SMS, etc.)
* in reading mode, open large files (more than 1 GB)
* keep a list of recently opened files
* reads system folders
* voice typing
* automatically detect file encoding (see Notes)

NOTES.
1) If in edit mode you try to open a large file, then there will be delays when opening and scrolling.
The optimal file size depends on the type of file (text or binary) and device performance.
2) Binary files may be displayed with loss of information (some bytes of the file cannot be converted to text).
3) Limitations of the free version: 33 encodings are available. During the editing process, you can undo the last 20 changes.