At some point in the future we would like to be able to support additional browsers, including Firefox and Safari, however we do not have an ETA on either.
There are some browsers which have been built on the Chromium browser engine, which is an offshoot of Chrome. As such, many of these browsers are able to install Chrome extensions. PLEASE NOTE that while our extension may be able to be installed on to these browsers, we are not able to support any malfunctions which may ensue.
Additionally, we are currently working diligently on our first ever mobile app. It is not yet available for alpha or beta testers, however as soon as it is ready we will be making a public announcement.
We only officially support Google Chrome at this time.