Simple error handling primitives
:100:Go Struct and Field validation, including Cross Field, Cross Struct, Map, Slice and Array diving
[Go] Package of validators and sanitizers for strings, numerics, slices and structs
High-precision indoor positioning framework, version 3.
Staticcheck - The advanced Go linter
Utilities for Go structs
Go port of Coda Hale's Metrics library
Go Humans! (formatters for units to human friendly sizes)
Golang plugin system over RPC.