As in the title, I looking for a simple free web app (service/panel) with these requirements:
- is small and simple - it include simple installation,
- has built in simple authentication,
- has WYSIWYG HTML editor - can make the CRUD (Create Read Update Delete) operations on the HTML files on the web server, including uploading and embedding images in the document,
- is open-source - I would like to have the possibility to modify its code for my own needs.
It would be perfect if it was written in PHP, but I'm also open to other programming languages.