How to download and setup FirebaseIM
Open terminal and run command
                                            git clone https://github.com/MahmoudAlyuDeen/FirebaseIM.git
                                        
                                        git clone is used to create a copy or clone of FirebaseIM repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with FirebaseIM https://github.com/MahmoudAlyuDeen/FirebaseIM/archive/master.zip
Or simply clone FirebaseIM with SSH
                                            [email protected]:MahmoudAlyuDeen/FirebaseIM.git                                    
                                    If you have some problems with FirebaseIM
You may open issue on FirebaseIM support forum (system) here: https://github.com/MahmoudAlyuDeen/FirebaseIM/issuesSimilar to FirebaseIM repositories
Here you may see FirebaseIM alternatives and analogs
react-starter-kit ant-design-pro rxdb react-firebase-starter functions-samples quickstart-android angularfire react-native-firebase FirebaseUI-Android cannercms re-base react-hn react-native-starter-kit cerebral react-native-fcm Quick-Chat firebase-js-sdk santa-tracker-android react-redux-firebase quickstart-ios HackerNews codelab-friendlychat-web awesome-opensource-apps FirebaseUI-iOS distributed todo-react-redux Pyrebase firebase-ios-sdk chat-sdk-android react-native-firestack