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 Google Chrome (Free), Brave (Free, Open Source), Vivaldi (Free) and Opera (Free).
GNOME Web is the web browser for the GNOME desktop, based on the popular WebKit engine. It offers a simple, clean, beautiful view of the Web featuring first-class GNOME desktop integration. Its code name is Epiphany.
An actively developped, keyboard-focused browser with a minimal GUI, inspired by other browsers/addons like dwb and Vimperator/Pentadactyl. It’s based on Python, PyQt5 and QtWebKit and free software, licensed under the GPL.
Cent Browser is an enhanced version of the Chromium web browser that bundles many useful features, such as scrollable tab bar, automatic memory optimization, lazy session loading, mouse gesture, super drag and a lot of tab options.