This package provides a basic set of functions applying grammar rules to inflect English words, modify case style (Capitalize, camelCase, snake_case, etc.).

ansi defines common ANSI escape sequences based on the ECMA-48 specs.

This package provides helpers to convert between pointers and values of built-in and, with generics, of any types.

This package provides validators and sanitizers for strings, structs and collections. It was based on validator.js.

This Package provides filters that can be chained together in a manner similar to Unix pipelines.

The liner Go package implements a simple command line editor with history, inspired by linenoise. Xterm as well as WIN32 terminal codes are supported.

sudo is a package to make reflect more powerful (and dangerous). It exports a single function, Sudo, which when passed a reflect.Value, will return a new reflect.Value with the read-only restrictions removed.

This package provides the ability to generate Sortable Identifiers. These identifiers are also universally unique.

This package provides a library for building powerful interactive prompts inspired by python-prompt-toolkit, making it easier to build cross-platform command line tools using Go.

This package provides a parser library for Golang which constructs parsers from definitions in struct tags and parses directly into those structs. The approach is similar to how other marshallers work in Golang, "unmarshalling" an instance of a grammar into a struct.

This package aims to provide algorithms optimized to leverage advanced instruction sets of modern CPUs to maximize throughput and take the best advantage of the available compute power. It includes functions that have often been designed to work on arrays of values, which is where SIMD and branchless algorithms shine.

This package implements a simple XML 1.0 parser that understands XML name spaces, along with extended support for control characters.

This package provides a collection various self sufficient Golang sub-packages:

• bytereplacer - provides a utility for replacing parts of byte

• ctxutil - contains golang.org/x/net/context related utilities

• errorutil - helps make better error messages

• fault - handles fault injection for testing

• jsonconfig - defines a helper type for JSON objects to be used for configuration

• legal - provides in-process storage for compiled-in licenses

• lock - provides a file locking library

• media/heif - reads HEIF containers, as found in Apple HEIC/HEVC images

• must - contains helpers that panic on failure

• net/throttle - provides a net.Listener that returns artificially-delayed connections for testing real-world connectivity slices

• oauthutil - contains OAuth 2 related utilities

• osutil - contains os level functions

• readerutil - contains io.Reader types

• readerutil - provides and operates on io.Readers

• reflectutil - contains reflect utilities

• rollsum - implements rolling checksums similar to apenwarr's bup, which is similar to librsync

• sort - provides primitives for sorting slices and user-defined collections

• strutil - contains string and byte processing functions

• syncutil/singleflight - provides a duplicate function call suppression mechanism

• syncutil/syncdebug - contains facilities for debugging synchronization problems

• syncutil - provides various synchronization utilities

• testing/functest - contains utilities to ease writing table-driven tests for pure functions and method

• types - provides various common types

• wkfs - implements the pluggable well-known filesystem abstraction layer

• writerutil - contains io.Writer types

• xdgdir - implements the Free Desktop Base Directory specification for locating directories

Shlex is a simple lexer for go that supports shell-style quoting, commenting, and escaping.

This package implements value validations based on struct tags. In code it is often necessary to validate that a given value is valid before using it for something. This package allows one to define valid values as struct tags when defining a new struct type.

gopkg is a universal utility collection for Go, it complements offerings such as Boost, Better std, Cloud tools.

This package provides common data formats and utilities for transparency log implementations, including checkpoint and proof formats.

go-keyring is a library for setting, getting and deleting secrets from the system keyring.

This package provides helpers for generating Go assembler ABI0 code.

This is a Unix utility that outputs randomness. It is a thin wrapper around crypto/rand.

This package provides a collection veriaty of utility libraries:

• intset - compress a stream of integers

• lz - lempel-ziv compression

• threadtree - a threaded binary-tree

• numerical - numerical integration and root finding

• maze - maze generation stuff

• hist - simple command-line histogramming tool

• simhash - trivial simhash implementation

• wscat - trivial websocket netcat

• servedir - trivial http fileserver

• rndtxt - generate random text strings

• mpush - push to multiple notification services (pushbullet, nma, pushover)

• superbat - batmanjs and go-restful playground

• msgrpc - msgpack rpc python/go interop samples

• quantile - testing different streaming quantile estimators

• wtflog - logging package with some renamed log levels

• qrshow - display QR codes in a terminal

• nlz - asm code to find number of leading zeros

• httpecho - server to dump information about an http request

• lzpack - trivial packed format for lz4 compression

• grinderplot - generate a flot chart from grinder logs

• worker - framework for spawning concurrent workers

• gddo - search godoc.org from the command line

• uuid - generate random UUIDs

• entropy - reducer to compute entropy per epoch for a set of values in a category

• inthash - integer hashing functions

• udprelay - simple udp-to-tcp multiplexing relay

• shufsecs - shuffle sorted epoch-data within epochs

• strtable - dumb string->uint32 hash table for profiling vs native maps

• cachetest - playing with different caching algorithms (clock, lru, lfu, random)

• glj - passing data from go to lua with msgpack

• toms - text filter for time.Duration to milliseconds

• bluniq - bloom-filter based unique filter

• skvdist - check distribution of shardedkv choosers

• gcwatch - print out garbage collection stats from /debug/vars

• toepoch - convert time fields to epochs

• repl - framework for making dumb repls for testing

• skvchk - tool for checking shardedkv distributions

• interp - interpolation search

• oma - simulation of the Dutch children's board game "Met de bus naar Oma"

• rndsample - uniform random sample from stdin

• pphrase - simple passphrase generator

• fastrand - fast xorshift rng with bias-free [0..n)

• range2cird - turn IP ranges into CIDR

• gfmt - trivial filter wrapping go-linebreak

• mtest - port of libtommath test program

• leven - fastest levenshtein distance algorithm I could find

• matcher - test different methods of testing string set membership

• cstbucket - crunch carbonserver logs for time-ranges of queries

• stablepart - stable partition a sort.Interface on a boolean predicate

• jumpreplica - tool for playing with replica choices for jump-hash

• sshdregex - demo using ragel for optimized regexp matching

• hllbench - benchmark different hyperloglog implementations

• shlines, sipsum - tools for siphashing things

• urlq - extract query parameters from a list of URLs

• median - compute the median of 5 numbers with a sorting network

• hashbench - benchmark different hashing functions

• fastpprof - how to use pprof with fasthttp

• ewmaest - progress logging with ewma-based ETA estimation

Scorch supports a pluggable segment interface. This package provides that segment API interface.

This package is a cross-platform Go library to place an icon and menu in the notification area.

This package is a drop-in replacement for the Golang standard library log/syslog, but with support for TLS.