Strength:
• Open source. If you are not familiar with "open source", it means this add-on is more secure. Because its code is publicly available for review and contributions on GitHub at https://github.com/M-Gregoire/Firefox-AddUrlToWindowsTitle
• Attractive Apache License 2.0. This means the software code of this add-on app is owned and supported by a friendly not-for-profit community. Instead of a for-profit corporation. And more secure because its full code is publicly available for review.
• Works with KeePassX, KeePass

Challenge:
• Not yet able to add URL to HTTP Basic Auth pop up. Related ticket at
https://github.com/M-Gregoire/Firefox-AddUrlToWindowsTitle/issues/1
• Very basic. It’s a new add-on. For now all it does is add the URL to the window title. No customization yet.

Using
• Add-on url-in-title-keepass 1.0
• Firefox 52.8.0 (64-bit)
• Debian 8 Jessie 64-bit
• GNOME 3.14.1