This is how snippets are stored on the file system (the date following the week number is the first day of the week):
This is what the (extremely simple) editor looks like (you can, of course, just edit the files in another text editor and just use Progress to render and view your snippets):
Find the download and installation instructions on GitHub! As usual, feel free to open any issues or pull requests on the repo for any bugs, feature requests, etc.