* [Martini](http://martini.codegangsta.io/) - Martini is a powerful package for quickly writing modular web applications/services in Golang.
* [Gorilla](http://www.gorillatoolkit.org/) - Gorilla is a web toolkit for the Go programming language.
* [Gin](http://gin-gonic.github.io/gin/) - Gin is a web framework written in Go! It features a martini-like API with much better performance, up to 40 times faster. If you need performance and good productivity.
* [Goji](https://goji.io) - Goji is a minimalistic web framework for Golang that's high in antioxidants.
* [web.go](http://webgo.io/) - A simple framework to write webapps in Go.
* [pat](https://github.com/bmizerany/pat) - Sinatra style pattern muxer for Go’s net/http library, by the author of Sinatra.
* [Revel](http://revel.github.io/) - A high-productivity web framework for the Go language.
* [httprouter](https://github.com/julienschmidt/httprouter) - A high performance router. Use this and the standard http handlers to form a very high performance web framework.
* [mustache](https://github.com/hoisie/mustache) - A Go implementation of the Mustache template language.
* [kasia.go](https://github.com/ziutek/kasia.go) - Templating system for HTML and other text documents - go implementation.
* [gold](https://github.com/yosssi/gold) - Gold is a template engine for Go. This simplifies HTML coding in Go web application development. This is influenced by Slim and Jade.
* [Soy](https://github.com/robfig/soy) - Closure templates (aka Soy templates) for Go, following the [official spec](https://developers.google.com/closure/templates/)
* [bolt](https://github.com/boltdb/bolt) - A low-level key/value database for Go.
* [go-cache](https://github.com/pmylund/go-cache) - An in-memory key:value store/cache (similar to Memcached) library for Go, suitable for single-machine applications.
* [goleveldb](https://github.com/syndtr/goleveldb) - An implementation of the [LevelDB](https://code.google.com/p/leveldb/) key/value database in the Go.
* [groupcache](https://github.com/golang/groupcache) - Groupcache is a caching and cache-filling library, intended as a replacement for memcached in many cases.
* [mgo](http://labix.org/mgo) - MongoDB driver for the Go language that implements a rich and well tested selection of features under a very simple API following standard Go idioms.
* [redis](https://github.com/hoisie/redis) - A simple, powerful Redis client for Go.
*Libraries that implement Object-Relational Mapping or datamapping techniques.*
* [BeeDB](https://github.com/astaxie/beedb) - go ORM,support database/sql interface，pq/mysql/sqlite.
* [GORM](https://github.com/jinzhu/gorm) - The fantastic ORM library for Golang, aims to be developer friendly.
* [gorp](https://github.com/coopernurse/gorp) - Go Relational Persistence, ORM-ish library for Go.
* [hood](https://github.com/eaigner/hood) - Database agnostic ORM for Go.
* [QBS](https://github.com/coocood/qbs) - Stands for Query By Struct. A Go ORM.
* [Xorm](https://github.com/go-xorm/xorm) - Simple and powerful ORM for Go.
* [upper.io/db](https://upper.io/db) - Single interface for interacting with different data sources through the use of adapters that wrap mature database drivers.
* [go-pkg-xmlx](https://github.com/jteeuwen/go-pkg-xmlx) - Extension to the standard Go XML package. Maintains a node tree that allows forward/backwards browsing and exposes some simple single/multi-node search functions.
* [go-pkg-rss](https://github.com/jteeuwen/go-pkg-rss) - This package reads RSS and Atom feeds and provides a caching mechanism that adheres to the feed specs.
* [go-stem](https://github.com/agonopol/go-stem) - Implementation of the porter stemming algorithm.
* [snowball](https://github.com/goodsign/snowball) - Snowball stemmer port (cgo wrapper) for Go. Provides word stem extraction functionality.
* [paicehusk](https://github.com/Rookii/paicehusk) - Golang implementation of the Paice/Husk Stemming Algorithm
* [go-porterstemmer](https://github.com/reiver/go-porterstemmer) - A native Go clean room implementation of the Porter Stemming algorithm.
* [stemmer](https://github.com/dchest/stemmer) - Stemmer packages for Go programming language. Includes English and German stemmers.
* [snowball](https://github.com/kljensen/snowball) - Go implementation of the Snowball stemmers
* [porter](https://github.com/a2800276/porter) - This is a fairly straighforward port of Martin Porter's C implementation of the Porter stemming algorithm.
* [golibstemmer](https://github.com/rjohnsondev/golibstemmer) - Go bindings for the snowball libstemmer library including porter 2
* [snowball](https://github.com/tebeka/snowball) - Snowball Stemmer for Go [Snowball native](http://snowball.tartarus.org/)
* [icu](https://github.com/goodsign/icu) - Cgo binding for icu4c C library detection and conversion functions. Guaranteed compatibility with version 50.1.
* [libtextcat](https://github.com/goodsign/libtextcat) - Cgo binding for libtextcat C library. Guaranteed compatibility with version 2.2.
* [textcat](https://github.com/pebbe/textcat) - A Go package for n-gram based text categorization, with support for utf-8 and raw text
* [go-eco](https://code.google.com/p/go-eco/) - Similarity, dissimilarity and distance matrices; diversity, equitability and inequality measures; species richness estimators; coenocline models.
* [MMSEGO](https://github.com/awsong/MMSEGO) - This is a GO implementation of [MMSEG](http://technology.chtsai.org/mmseg/) which a Chinese word splitting algorithm.
* [gounidecode](https://github.com/fiam/gounidecode) - Unicode transliterator (also known as unidecode) for Go
* [go-nlp](https://github.com/nuance/go-nlp) - Utilities for working with discrete probability distributions and other tools useful for doing NLP work.
*Libraries for scientific computing and data analyzing.*
* [go.matrix](https://github.com/skelterjohn/go.matrix) - linear algebra for go
* [gocomplex](https://code.google.com/p/gocomplex/) - A complex number library for the Go programming language.
* [mudlark-go](https://code.google.com/p/mudlark-go-pkgs/) - A collection of packages providing (hopefully) useful code for use in software using Google's Go programming language.
* [gostat](https://code.google.com/p/gostat/) - A statistics library for the go language
* [gofrac](https://github.com/anschelsc/gofrac) - A (goinstallable) fractions library for go with support for basic arithmetic.
* [geom](https://github.com/skelterjohn/geom) - 2D geometry for golang
* [blas](https://github.com/ziutek/blas) - Implementation of BLAS (Basic Linear Algebra Subprograms)
* [go-fn](https://code.google.com/p/go-fn/) - Mathematical functions written in Go language, that are not covered by math pkg
* [go-gt](https://code.google.com/p/go-gt/) - Graph theory algorithms written in "Go" language
* [vectormath](https://github.com/spate/vectormath) - Vectormath for Go, an adaptation of the scalar C functions from Sony's Vector Math library, as found in the Bullet-2.79 source code.
* [CloudForest](https://github.com/ryanbressler/CloudForest) - Fast, flexible, multi-threaded ensembles of decision trees for machine learning in pure Go.
* [GoSpec](https://github.com/orfjackal/gospec) - BDD-style testing framework for the Go programming language.
* [gospecify](https://github.com/stesla/gospecify) - This provides a BDD syntax for testing your Go code. It should be familiar to anybody who has used libraries such as rspec.
* [gomock](https://code.google.com/p/gomock/) - Mocking framework for the Go programming language.
* [mockhttp.go](https://github.com/tv42/mockhttp.go) - Mock object for Go http.ResponseWriter
* [assert](https://github.com/bmizerany/assert) - Asserts to Go testing
* [Hamcrest](https://github.com/rdrdr/hamcrest) - fluent framework for declarative Matcher objects that, when applied to input values, produce self-describing results.
* [GoSublime](https://github.com/DisposaBoy/GoSublime) - A Golang plugin collection for the text editor SublimeText 2 providing code completion and other IDE-like features.
* [Circuit](https://github.com/gocircuit/circuit) - Circuit is a programmable platform-as-a-service (PaaS) and/or Infrastructure-as-a-Service (IaaS), for management, discovery, synchronization and orchestration of services and hosts comprising cloud applications.
* [gaudi](http://gaudi.io/) - Gaudi automates the setup of isolated and decoupled dev environments.
* [go generate](https://docs.google.com/document/d/1V03LUfjSADDooDMhe-_K59EgpTEm3V8uvQRuNMAEnjg/edit) - A proposed code generation syntax from Rob Pike.
