Url Launcher : Flutter plugin for launching a URL. Supports web, phone, SMS, and email schemes.
Share Plus: Flutter plugin for sharing content via the platform share UI, using the ACTION_SEND intent on Android and UIActivityViewController on iOS.
Cached Network Image: Flutter library to load and cache network images. Can also be used with placeholder and error widgets.
Dio: A powerful HTTP package for Dart/Flutter, which supports Global settings, Interceptors, FormData, Aborting and canceling a request, Files uploading and downloading, Requests timeout, Custom adapters, etc.
intl:- Link: Contains code to deal with internationalized/localized messages, date and number formatting and parsing, bi-directional text, and other internationalization issues.