First look at Portmaster, an open source cross-platform network monitor - gHacks Tech News
Microsoft starts to open source .NET and take it cross-platform to Mac, Linux | VentureBeat
BitWarden: an open source cross-platform password manager | Linux Addicts
Elephant is an open source, cross platform note taking application - gHacks Tech News
Does Open Source development suggest Cross Platform? - Quora
An Introduction To Cross-Platform Mobile Development
The GTK Project - A free and open-source cross-platform widget toolkit
Bitwarden | Open Source Cross-platform Password Manager
Working with the ServiceStack open source, cross platform Web service framework | InfoWorld
Top 5 Free, Cross-Platform, and Open-Source Database System in 2020 - GeeksforGeeks
Cross-platform development will dominate open-source this year, GitHub says - SD Times
GitHub - juce-framework/JUCE: JUCE is an open-source cross-platform C++ application framework for desktop and mobile applications, including VST, VST3, AU, AUv3, RTAS and AAX audio plug-ins.