Hello, everybody!
We have good news, as of start of May 2019, we have now added a Firefox extension for SplashID Safe. You can download it here: https://addons.mozilla.org/en-US/firefox/addon/splashid/

We also brought back our Google Chrome extension, that one is here:
https://chrome.google.com/webstore/detail/splashid/hgifhdlfiinediijdiaappjnediclaen?hl=en-US

Please note use of these requires your SplashID Safe account to be using Cloud Sync - the extensions won't work for WiFi Sync/No Sync (Standalone) modes.

Add Firefox extension. Very frustrating to have to toggle between Splashed Pro and applications

I use Firefox regularly, and I am considering whether to use your password service or not.

Please create this. Other products have this (1password, ...).
I would rather not change.