go-libnp is a tiny cross-platform library for extracting information about the music/image/video that is Now Playing on the system.

This package implements a functionality to modify/update field tags in structs making it easy to update, add or delete the tags in a struct field with possibility to add and remove tag options. It's intended to be used by an editor, but also has modes to run it from the terminal.

A speedy fuzzy matching package for Go inspired by the JavaScript library bevacqua/fuzzysearch.

This package provides a driver for Mongo data base.

This package just simplifies working with go/* packages to parse a source code. Initially the package was written to simplify code generation.

Common SELinux package used across the container ecosystem.

This package provides string-matching based on BSD fnmatch.3. It is an updated clone of kballards golang fnmatch gist (https://gist.github.com/kballard/272720).

This package provides a code generation tool for creating methods to serialize and de-serialize Go data structures to and from data interchange format - MessagePack.

Utilities to prettify console output of tables, lists, progress-bars, text, etc. with a heavy emphasis on customization.

This package provides a POSIX-compatible implementation of getopt for Go.

This package implements a "diff" algorithm that compares two JSON objects and generates deltas that describe the differences between them. The deltas can be applied to a JSON object to "patch" them.

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

pcidb is a small Golang library for programmatic querying of PCI vendor,product and class information.

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

go-units is a library to transform human friendly measurements into machine friendly values.

mph is a Go package that implements a minimal perfect hash table over strings.

Package warnings implements error handling with non-fatal errors (warnings).

This package provides a relatively simple declarative config format for zerolog supporting configuration files written in YAML or JSON.

Package buffer provides a generic buffer or batching mechanism for flushing entries at a given size or interval, useful for cases such as batching log events.

Package lexer provides generating actionless scanners (lexeme recognizers) at run time.

This package provides a multiplexed stream library using spdy.

This package provides factors out an opinionated selection of internal packages and functionality from the Go standard library. Currently this consists mostly of packages and testing code from within the Go tool implementation.

Included are the following:

• dirhash: calculate hashes over directory trees the same way that the Go tool does.

• goproxytest: a GOPROXY implementation designed for test use.

• gotooltest: Use the Go tool inside test scripts (see testscript below)

• imports: list of known architectures and OSs, and support for reading import import statements.

• modfile: read and write go.mod files while preserving formatting and comments.

• module: module paths and versions.

• par: do work in parallel.

• semver: semantic version parsing.

• testenv: information on the current testing environment.

• testscript: script-based testing based on txtar files

• txtar: simple text-based file archives for testing.

Package udev provides a cgo wrapper around the libudev C library.

This package provides a Go library for encode and decode YAML values.