Which software is not open source?

The correct answer is Internet explorer. Internet Explorer is not open-source software.

Which software is open source?

Other examples of popular open source technologies include the Android mobile OS, the Mozilla Firefox web browser, the widely-used version control system Git, and the two related office suites OpenOffice and LibreOffice.

What software does Nokia use?

Nokia X platform

Nokia X home screen in Vietnamese
Developer	Android Open Source Project (AOSP) code: Google Modifications: Microsoft Mobile (formerly Nokia)
Written in	C (core), C++, Java (UI)
OS family	Linux
Source model	Proprietary software based on open source Android and in all devices with proprietary components

Are all free software open source?

Nearly all open source software is free software, but there are exceptions. First, some open source licenses are too restrictive, so they do not qualify as free licenses. For example, “Open Watcom” is nonfree because its license does not allow making a modified version and using it privately.

Is Mozilla open source?

Mozilla Firefox is free and open source software, built by a community of thousands from all over the world. Firefox is made available to you under the terms of the Mozilla Public License. This means you may use, copy and distribute Firefox to others.

Is Microsoft going to buy Nokia?

A leading analyst firm states that Microsoft is in the mix to buy the once-famous Nokia company. CSS Insight predicts that in 2021, Nokia will be bought by a prominent U.S.-based tech company next year. They named both Microsoft and Intel as likely to buy Nokia.

Is used by Nokia phones this is closed source OS?

Symbian Operating System in 1977; it is mostly used by Nokia phones.