https://pub.dev/packages/awesome_card

Awesome Card A flutter package to create a Credit Card widget in your application.

https://pub.dev/packages/avatar_glow

This Flutter package provides a Avatar Glow Widget with cool background glowing animation.

https://pub.dev/packages/page_turn

Add a page turn effect to widgets in your app.

https://pub.dev/packages/native_pdf_view

Flutter Plugin to render PDF and show a PDF file on Web, MacOs 10.11+, Android 5.0+ and iOS.

https://pub.dev/packages/image_cropper

A Flutter plugin for Android and iOS supports cropping images. This plugin is based on two different native libraries so it comes with different UI between these platforms.

https://pub.dev/packages/bottom_navy_bar

A beautiful and animated bottom navigation. The navigation bar use your current theme, but you are free to customize it.

https://pub.dev/packages/curved_navigation_bar

A Flutter package for easy implementation of curved navigation bar.

https://pub.dev/packages/device_preview

Approximate how your app looks and performs on another device.

https://pub.dev/packages/flutter_slidable A Flutter implementation of slidable list item with directional slide actions that can be dismissed.

https://pub.dev/packages/file_picker A package that allows you to use a native file explorer to pick single or multiple absolute file paths, with extensions filtering support.

Create awesome and powerful modal bottom sheets.

Cupertino Modal	Multiple Modals	Material Modal	Bar Modal	Create your own

https://pub.dev/packages/youtube_player_flutter

Flutter plugin for playing or streaming YouTube videos inline using the official iFrame Player API.

https://pub.dev/packages/chewie

The video player for Flutter with a heart of gold.

The video_player plugin provides low-level access to video playback. Chewie uses the video_player under the hood and wraps it in a friendly Material or Cupertino UI!

https://pub.dev/packages/video_player

A Flutter plugin for iOS and Android for playing back video on a Widget surface.

https://pub.dev/packages/scratcher

Scratch card widget which temporarily hides content from user.

https://pub.dev/packages/sleek_circular_slider

A highly customizable circular slider/progress bar for Flutter.

https://pub.dev/packages/status_alert

https://pub.dev/packages/flare_flutter

For adding Flare Animation in app

https://pub.dev/packages/country_code_pickerhttp://

A flutter package for showing a country code selector.

https://pub.dev/packages/flutter_spinkit

A collection of loading indicators animated with flutter. Heavily inspired by @tobiasahlin's SpinKit.

RotatingPlain	DoubleBounce	Wave	WanderingCubes	FadingFour	FadingCube
Pulse	ChasingDots	ThreeBounce	Circle	CubeGrid	FadingCircle
RotatingCircle	FoldingCube	PumpingHeart	DualRing	HourGlass	PouringHourGlass
FadingGrid	Ring	Ripple	SpinningCircle	SquareCircle

https://pub.dev/packages/flutter_easyrefresh

Just like the name, EasyRefresh can easily implement pull-down refresh and upload operations on Flutter applications. It supports almost all Flutter controls. Its functions are similar to Android's Smart Refresh Layout, and it also draws on the advantages of many tripartite libraries. EasyRefresh integrates various styles of Headers and Footers, but it has no limitations. You can easily customize it. Using Flutter's powerful animation, even a simple control can be done. EasyRefresh aims to build a strong, stable and mature drop-down refresh framework for Flutter.

Basic	User profile
BasicPage	UserProfilePage

NestedScrollView	Link header
NestedScrollViewPage	LinkHeaderPage

First refresh	Empty widget
FirstRefreshPage	EmptyPage

|Second floor|Chat demo|

Second floor	Chat demo
SecondFloorPage	ChatPage

Material	BallPulse
MaterialPage	BallPulsePage

BezierCircle	BezierHourGlass
BezierCirclePage	BezierHourGlassPage

Phoenix	Delivery
PhoenixPage	TaurusPage

Space	Delivery
SpacePage	DeliveryPage

https://pub.dev/packages/animated_text_kit

A flutter package which contains a collection of some cool and awesome text animations.

https://pub.dev/packages/flutter_launcher_icons

A command-line tool which simplifies the task of updating your Flutter app's launcher icon. Fully flexible, allowing you to choose what platform you wish to update the launcher icon for and if you want, the option to keep your old launcher icon in case you want to revert back sometime in the future.

https://pub.dev/packages/font_awesome_flutter

The Font Awesome Icon pack available as set of Flutter Icons.

Based on Font Awesome 5.12.1. Includes all free icons:

• Regular
• Solid
• Brands

https://pub.dev/packages/local_auth

This Flutter plugin provides means to perform local, on-device authentication of the user.

This means referring to biometric authentication on iOS (Touch ID or lock code) and the fingerprint APIs on Android (introduced in Android 6.0).

https://pub.dev/packages/timeago

A library useful for creating fuzzy timestamps. (e.g. "5 minutes ago") Live Demo: Cick Here

https://pub.dev/packages/fl_chart

💥 A library to draw fantastic charts in Flutter 💥

LineChart	BarChart	PieChart
Read More	Read More	Read More

ScatterChart
Read More

https://pub.dev/packages/flutter_downloader

A plugin for creating and managing download tasks. Supports iOS and Android.

This plugin is based on WorkManager in Android and NSURLSessionDownloadTask in iOS to run download task in background mode.

https://pub.dev/packages/firebase_ml_vision

A Flutter plugin to use the ML Kit Vision for Firebase API.

https://pub.dev/packages/share_extend

A Flutter plugin for iOS and Android for sharing text, image, video and file with system ui.

https://pub.dev/packages/palette_generator

A Flutter package to extract prominent colors from an Image, typically used to find colors for a user interface.

https://pub.dev/packages/story_view

Story view for apps with stories.

https://pub.dev/packages/signature

A Flutter plugin providing performance optimized signature canvas with ability to set custom style, boundaries and initial state. This is native flutter implementation, so it supports all platforms.

https://pub.dev/packages/gallery_saver

Saves images and videos from network or temporary file to external storage. Both images and videos will be visible in Android Gallery and iOS Photos.

https://pub.dev/packages/flutter_ffmpeg

FFmpeg plugin for Flutter. Supports iOS and Android.

Video & Audio: Editing, Compression, Conversion, etc.

https://pub.dev/packages/flutter_translate

Flutter Translate is a fully featured localization / internationalization (i18n) library for Flutter.

It lets you define translations for your content in different languages and switch between them easily.

https://pub.dev/packages/photo_view

A simple zoomable image/content widget for Flutter.

PhotoView enables images to become able to zoom and pan with user gestures such as pinch, rotate and drag.

It also can show any widget instead of an image, such as Container, Text or a SVG.

Even though being super simple to use, PhotoView is extremely customizable though its options and the controllers.

.	.

https://pub.dev/packages/flutter_spinning_wheel

A customizable widget to use as a spinning wheel in Flutter.

###Thank you all amazing coders who developed these amazing useful libraries for community 👍🏻