A string-based path manipulation library. All of the path operations you know and love, with solid support for Windows, POSIX (Linux and Mac OS X), and the web.
String replacement with operations that are Unicode/grapheme cluster aware.
Auto-generated client libraries for accessing Google APIs described through the API discovery service.
Versions and version constraints implementing pub's versioning policy. This is very similar to vanilla semver, with a few corner cases.
A parser for YAML, a human-friendly data serialization standard
A composable, multi-platform, Future-based API for HTTP requests.
Implementations of SHA, MD5, and HMAC cryptographic functions
Collections and utilities functions and classes related to collections.
Value types with builders, Dart classes as enums, and serialization. This library is the runtime dependency.