golang.org/

Package bcrypt implements Provos and Mazières's bcrypt adaptive hashing algorithm.

Package blowfish implements Bruce Schneier's Blowfish encryption algorithm.

Package terminal provides support functions for dealing with terminals, as commonly found on UNIX systems.

Package context defines the Context type, which carries deadlines, cancelation signals, and other request-scoped values across API boundaries and between processes.

Package ctxhttp provides helper functions for performing context-aware HTTP requests.

Package html implements an HTML5-compliant tokenizer and parser.

Package atom provides integer codes (also known as atoms) for a fixed set of frequently occurring HTML strings: tag names and attribute keys such as "p" and "id".

Package http2 implements the HTTP/2 protocol.

Package hpack implements HPACK, a compression format for efficiently representing HTTP header fields in the context of HTTP/2.

Package idna implements IDNA2008 using the compatibility processing defined by UTS (Unicode Technical Standard) #46, which defines a standard to deal with the transition from IDNA2003.

Package httplex contains rules around lexical matters of various HTTP-related specifications.

Package trace implements tracing of requests and long-lived objects.

Package websocket implements a client and server for the WebSocket protocol as specified in RFC 6455.

Package oauth2 provides support for making OAuth2 authorized and authenticated HTTP requests.

Package google provides support for making OAuth2 authorized and authenticated HTTP requests to Google APIs.

Package jws provides a partial implementation of JSON Web Signature encoding and decoding.

Package jwt implements the OAuth 2.0 JSON Web Token flow, commonly known as "two-legged OAuth 2.0".

Package unix contains an interface to the low-level operating system primitives.

Package cases provides general and language-specific case mappers.

Package language implements BCP 47 language tags and related functionality.

Package runes provide transforms for UTF-8 encoded text.

Package bidirule implements the Bidi Rule defined by RFC 5893.

Package precis contains types and functions for the preparation, enforcement, and comparison of internationalized strings ("PRECIS") as defined in RFC 7564.

Package transform provides reader and writer wrappers that transform the bytes passing through as well as various transformations.

Package bidi contains functionality for bidirectional text support.

Package norm contains types and functions for normalizing Unicode strings.

Package width provides functionality for handling different widths in text.

Package rate provides a rate limiter.

Package parse provides support for parsing benchmark results as generated by 'go test -bench'.

Package blog implements a web server for articles written in present format.

Package atom defines XML data structures for an Atom feed.

The benchcmp command displays performance changes between benchmarks.

Bundle creates a single-source-file version of a source package suitable for inclusion in a particular target package.

callgraph: a tool for reporting the call graph of a Go program.

Compilebench benchmarks the speed of the Go compiler.

Cover is a program for analyzing the coverage profiles generated by 'go test -coverprofile=cover.out'.

The digraph command performs queries over unlabelled directed graphs represented in text form.

The eg command performs example-based refactoring.

The fiximports command fixes import declarations to use the canonical import path for packages that have an "import comment" as defined by https://golang.org/s/go14customimport.

The getgo command installs Go to the user's system.

Command server serves get.golang.org, redirecting users to the appropriate getgo installer based on the request path.

The go-contrib-init command helps new Go contributors get their development environment set up for the Go contribution process.

The godex command prints (dumps) exported information of packages or selected package objects.

Godoc extracts and generates documentation for Go programs.

Command goimports updates your Go import lines, adding missing ones and removing unreferenced ones.

The gomvpkg command moves go packages, updating import declarations.

The gorename command performs precise type-safe renaming of identifiers in Go source code.

The gotype command, like the front-end of a Go compiler, parses and type-checks a single Go package.

Goyacc is a version of yacc for Go.

guru: a tool for answering questions about Go source code.

Package serial defines the guru's schema for -json output.

heapview is a tool for viewing Go heap dumps.

This program takes an HTML file and outputs a corresponding article file in present format.

Present displays slide presentations and articles.

ssadump: a tool for displaying and interpreting the SSA form of Go programs.

The stress utility is intended for catching sporadic failures.

Stringer is a tool to automate the creation of methods that satisfy the fmt.Stringer interface.

Command tip is the tip.golang.org server, serving the latest HEAD straight from the Git oven.

Toolstash provides a way to save, run, and restore a known good copy of the Go toolchain and to compare the object files generated by two toolchains.

Package intsets provides Sparse, a compact and fast representation for sparse sets of int values.

Package cover provides support for parsing coverage profiles generated by "go test -coverprofile=cover.out".

Package astutil contains common utilities for working with the Go AST.

Package buildutil provides utilities related to the go/build package in the standard library.

Package callgraph defines the call graph and various algorithms and utilities to operate on it.

Package cha computes the call graph of a Go program using the Class Hierarchy Analysis (CHA) algorithm.

This package provides Rapid Type Analysis (RTA) for Go, a fast algorithm for call graph construction and discovery of reachable code (and hence dead code) and runtime types.

Package static computes the call graph of a Go program containing only static call edges.

Package gccgoexportdata provides functions for reading export data files containing type information produced by the gccgo compiler.

Package gcexportdata provides functions for locating, reading, and writing export data files containing type information produced by the gc compiler.

Package loader loads a complete Go program from source code, parsing and type-checking the initial packages plus their transitive closure of dependencies.

Package packages loads Go packages for inspection and analysis.

The gopackages command is a diagnostic tool that demonstrates how to use golang.org/x/tools/go/packages to load, parse, type-check, and print one or more Go packages.

Package pointer implements Andersen's analysis, an inclusion-based pointer analysis algorithm first described in (Andersen, 1994).

Package ssa defines a representation of the elements of Go programs (packages, types, functions, variables and constants) using a static single-assignment (SSA) form intermediate representation (IR) for the bodies of functions.

Package ssa/interp defines an interpreter for the SSA representation of Go programs.

Package typeutil defines various utilities for types, such as Map, a mapping from types.Type to interface{} values.

Package vcs exposes functions for resolving import paths and using version control systems, which can be used to implement behavior similar to the standard "go get" command.

Package godoc is a work-in-progress (2013-07-17) package to begin splitting up the godoc binary into multiple pieces.

Package analysis performs type and pointer analysis and generates mark-up for the Go source view.

Package redirect provides hooks to register HTTP handlers that redirect old godoc paths to their new equivalents and assist in accessing the issue tracker, wiki, code review system, etc.

Package static exports a map of static file content that supports the godoc user interface.

Package util contains utility types and functions for godoc.

Package vfs defines types for abstract file system access and provides an implementation accessing the file system of the underlying OS.

Package gatefs provides an implementation of the FileSystem interface that wraps another FileSystem and limits its concurrency.

Package httpfs implements http.FileSystem using a godoc vfs.FileSystem.

Package mapfs file provides an implementation of the FileSystem interface based on the contents of a map[string]string.

Package zipfs file provides an implementation of the FileSystem interface based on the contents of a .zip file.

Package imports implements a Go pretty-printer (like package "go/format") that also adds or removes import statements as necessary.

Package playground registers HTTP handlers at "/compile" and "/share" that proxy requests to the golang.org playground service.

Package socket implements an WebSocket-based playground backend.

The present file format Present files have the following format.

Package eg implements the example-based refactoring tool whose command-line is defined in golang.org/x/tools/cmd/eg.

Package importgraph computes the forward and reverse import dependency graphs for all packages in a Go workspace.

Package rename contains the implementation of the 'gorename' command whose main function is in golang.org/x/tools/cmd/gorename.

Package satisfy inspects the type-checked ASTs of Go packages and reports the set of discovered type constraints of the form (lhs, rhs Type) where lhs is a non-trivial interface, rhs satisfies this interface, and this fact is necessary for the package to be well-typed.