Analysis of information sources in references of the Wikipedia article "Cross-platform software" in English language version.
...touch optimized interfaces: one for tablets and one for phone screens. ...(iOS, iPadOS, Chromebooks, Android).
the first viable self-hosted web office solution for the popular Raspberry Pi 4 platform
Collabora Office is a popular open-source alternative to the Microsoft Office suite. It's based on LibreOffice, and it's available on a variety of platforms, including Windows, Linux, iOS, and Android. This year in July, a major update for the office suite brought support for Chrome OS devices.