GainTools Cloud Importer is described as 'to move local email files to webmail account. The software easily import PST, OST, NSF, MBOX, EML, etc. files to any cloud service of your choice'. There are more than 100 alternatives to GainTools Cloud Importer for a variety of platforms, including Windows, Android, Mac, Linux and Android Tablet. The best alternative is Mozilla Firefox, which is both free and Open Source. Other great apps like GainTools Cloud Importer are Brave (Free, Open Source), Google Chrome (Free), Vivaldi (Free) and Opera (Free).
Vivaldi is extremely customizable, presenting a wide range of settings and built-in features designed to put the user in control. Its Chromium-based engine makes it fast and compatible with most Chrome extensions, and Vivaldi removes the code that tracks users from it.
Rebuilt from the ground up using Chromium, the new Microsoft Edge brings you world-class compatibility and performance, the security and privacy you deserve, and new features designed to bring you the best of the web.
Pale Moon is an Open Source, Goanna-based web browser available for Microsoft Windows and Linux (with other operating systems in development), focusing on efficiency and customization. Make sure to get the most out of your browser!.
Firefox Nightly is the development (alpha) release channel of Mozilla Firefox . Firefox Nightly gets a new version every few hours. It offers access to bleeding edge features of the development branch of Firefox before they make a final release.