The Dart SDK contains dart:io and other libraries that provide low-level command-line & server APIs.

SDK libraries

The Dart SDK contains dart:io and other libraries that provide low-level web APIs.

The dart:io section of the library tour

An example-driven tour of using the dart:io library. Topics include working with files & directories, and making & handling HTTP requests.

dart:io API reference

Complete reference documentation for the dart:io library.

Community packages

The pub.dev site allows you to search for packages that support command-line and server apps by specifying the platforms your app needs to support. You can also search for words that describe the functionality you need.

Command-line packages

Command-line apps often use the following packages, in addition to general-purpose packages such as archive, intl, and yaml:

Package	Description
args	Parses raw command-line arguments into a set of options and values.
cli_util	Provides utilities for building command-line apps.
completion	Adds command-line completion to apps that use the args package.
path	Provides comprehensive, cross-platform operations for manipulating paths.
usage	Wraps Google Analytics.

Server packages

Server apps can choose from many packages, in addition to the packages listed in the previous table and general-purpose packages such as logging:

Package	Description
crypto	Implements cryptographic hashing functions for algorithms such as SHA-1, SHA-256, MD5, and HMAC.
grpc	Implements gRPC, a high performance, open source, general RPC framework that puts mobile and HTTP/2 first.
shelf	Provides a model for web server middleware that encourages composition and easy reuse.
dart_frog	A fast, minimalistic backend framework for Dart built on top of Shelf.
serverpod	A scalable app server that supports code generation, authentication, real-time communication, databases, and caching.