1) Computer Centre does not recommend any specific browser. Use Google chrome with proper privacy understanding.
2) Do not use this app when using a public computer. Use these steps if the system belongs to you.
Google chrome has an app for roundcube webmail. Following steps gives a pictorial view of using it using Google chrome Version 60.0.3112.90 (Official Build) (Linux,64-bit).
Go to "More Tools" –> "Extensions" –> "get more extensions". Then search for roundcube and click on "Add to Chrome".
Now Open the app, and provide the information same as of figure 1.3.15. Then click on save and then continue.
Then When you are opening a new tab in chrome, click on "App" icon below the address bar. it will show all the available Apps.
Following steps will add the roundcube chrome webapp short-cut to home screen in android.
The following explains the above sequence of pictures.