Simon 5 is coming soon!
Simon version 5 is currently in beta testing. It is a massive update, introducing a much-requested feature: syncing the Simon data between multiple Macs, plus a Simon Status service, a Link Checker filter, improved Find filter, iMessage and Speak Error notifiers, a new app icon, and much more.
Important: please note that Simon 5 requires a minimum of macOS 10.12 (Sierra), and will be a paid upgrade from Simon 4 after the beta. Purchasers since September 1, 2020 automatically get a version 5 license (that also works in previous versions).
Re: htaccess file
Yes, you could make a duplicate of the "FTP Directory Listing" service and edit it to display the contents of that file, instead of doing a directory listing.
This should work, allowing looking at the contents of any file on your server:
ftp -n {Domain} << EOFuser {Username} {Password}
cd {Directory Path}
more {Filename}
EOF