Facebook Chat Privacy
Facebook Chat Privacy 0.0.17 is free to download from our software library. The actual developer of the free software is Jan Biersen. The program lies within Communication Tools, more precisely Social.
From the developer:
Facebook Chat Privacy is a Chrome extension that lets you disable Facebook's mark as read feature.
You may want to check out more software, such as Facebook Chat Desktop, Facebook Chat Monitor Sniffer or FacebookChat, which might be similar to Facebook Chat Privacy.