AWS Amplify - JavaScript library for app development using cloud services
openDesktop.org - The website openDesktop.
Online Compiler & Editor - Online Compiler & Editor is the highly efficient and fast-speed online compiler IDE that can run, execute, and compile the snippet on mobile and tablets by supporting more than forty-five programming languages.
SourceForge - The Complete Open-Source and Business Software Platform.
Google Cloud Repositories - GitHub alternative by Google
Freecode - Freecode (formerly known as Freshmeat) is one of the legit open source development platforms that will be the key for developers and programmers to have a streamlined process via having enhanced collaboration and coding leverages.