Alternatives and similar repositories for now:

Users that are interested in now are comparing it to the libraries listed below

• asaskevich / govalidator
  [Go] Package of validators and sanitizers for strings, numerics, slices and structs
  ☆6,082Updated 4 months ago
• fatih / structs
  Utilities for Go structs
  ☆3,911Updated 6 years ago
• jasonlvhit / gocron
  A Golang Job Scheduling Package.
  ☆3,473Updated last year
• fvbock / endless
  Zero downtime restarts for go servers (Drop in replacement for http.ListenAndServe)
  ☆4,068Updated 3 years ago
• Jeffail / tunny
  A goroutine pool for Go
  ☆3,937Updated last year
• spf13 / cast
  safe and easy casting from one type to another in Go
  ☆3,592Updated 3 weeks ago
• satori / go.uuid
  UUID package for Go
  ☆4,899Updated 5 months ago
• go-gomail / gomail
  The best way to send emails in Go.
  ☆4,434Updated last year
• mailru / easyjson
  Fast JSON serializer for golang.
  ☆4,564Updated this week
• natefinch / lumberjack
  lumberjack is a log rolling package for Go
  ☆4,952Updated 5 months ago
• davecgh / go-spew
  Implements a deep pretty printer for Go data structures to aid in debugging
  ☆6,140Updated 9 months ago
• shopspring / decimal
  Arbitrary-precision fixed-point decimal numbers in Go
  ☆6,509Updated 5 months ago
• upper / db
  Data Access Layer (DAL) for PostgreSQL, CockroachDB, MySQL, SQLite and MongoDB with ORM-like features.
  ☆3,552Updated last month
• mitchellh / mapstructure
  Go library for decoding generic map values into native Go structures and vice versa.
  ☆7,950Updated 6 months ago
• pkg / errors
  Simple error handling primitives
  ☆8,208Updated 3 years ago
• buger / jsonparser
  One of the fastest alternative JSON parser for Go that does not require schema
  ☆5,485Updated 6 months ago
• uber-go / ratelimit
  A Go blocking leaky-bucket rate limit implementation
  ☆4,392Updated 8 months ago
• jinzhu / copier
  Copier for golang, copy value from struct to struct and more
  ☆5,659Updated 5 months ago
• nicksnyder / go-i18n
  Translate your Go program into multiple languages.
  ☆3,076Updated this week
• deckarep / golang-set
  A simple, battle-tested and generic set type for the Go language. Trusted by Docker, 1Password, Ethereum and Hashicorp.
  ☆4,330Updated last month
• patrickmn / go-cache
  An in-memory key:value store/cache (similar to Memcached) library for Go, suitable for single-machine applications.
  ☆8,273Updated last year
• streadway / amqp
  Go client for AMQP 0.9.1
  ☆4,887Updated last year
• parnurzeal / gorequest
  GoRequest -- Simplified HTTP client ( inspired by nodejs SuperAgent )
  ☆3,453Updated 9 months ago
• cheggaaa / pb
  Console progress bar for Golang
  ☆3,661Updated this week
• BurntSushi / toml
  TOML parser for Golang with reflection.
  ☆4,622Updated 2 months ago
• smartystreets / goconvey
  Go testing in the browser. Integrates with `go test`. Write behavioral tests in Go.
  ☆8,295Updated 5 months ago
• gravityblast / fresh
  Build and (re)start go web apps after saving/creating/deleting source files.
  ☆3,802Updated 6 months ago
• cweill / gotests
  Automatically generate Go test boilerplate from your source code.
  ☆4,993Updated last year
• google / uuid
  Go package for UUIDs based on RFC 4122 and DCE 1.1: Authentication and Security Services.
  ☆5,448Updated 2 months ago
• dustin / go-humanize
  Go Humans! (formatters for units to human friendly sizes)
  ☆4,414Updated 9 months ago