awesome-go 上面列出来的项目：

• jakehl/goid  - Generate and Parse RFC4122 compliant V4 UUIDs.
• twharmon/gouid  - Generate cryptographically secure random string IDs with just one allocation.
• aidarkhanov/nanoid  - A tiny and efficient Go unique string ID generator.
• muyo/sno  - Compact, sortable and fast unique IDs with embedded metadata.
• oklog/ulid  - Go implementation of ULID (Universally Unique Lexicographically Sortable Identifier).
• uniq - No hassle safe, fast unique identifiers with commands.
• agext/uuid  - Generate, encode, and decode UUIDs v1 with fast or cryptographic-quality random node identifier.
• gofrs/uuid  - Implementation of Universally Unique Identifier (UUID). Supports both creation and parsing of UUIDs. Actively maintained fork of satori uuid.
• google/uuid  - Go package for UUIDs based on RFC 4122 and DCE 1.1: Authentication and Security Services.
• edwingeng/wuid  - An extremely fast globally unique number generator.
• rs/xid  - Xid is a globally unique id generator library, ready to be safely used directly in your server code.

我自己又在 GitHub 上搜罗了几个：

• lithammer/shortuuid  - 🍄 A generator library for concise, unambiguous and URL-safe UUIDs
• jetpack-io/typeid  - Type-safe, K-sortable, globally unique identifier inspired by Stripe IDs
• satori/go.uuid  - UUID package for Go
• segmentio/ksuid  - K-Sortable Globally Unique IDs

package main

import (
    "os/exec"

    guuid "github.com/google/uuid"
    suuid "github.com/satori/go.uuid"
)

func UseGoogle() string {
    id := guuid.New()
    return id.String()
}

func UseSatori() string {
    id := suuid.NewV4()
    return id.String()
}

func UseUuidgen() string {
    id, _ := exec.Command("uuidgen").Output()
    return string(id)
}

func main() {
    fmt.Println("Google UUID:", UseGoogle())
    fmt.Println("Satori UUID:", UseSatori())
    fmt.Println("Uuidgen UUID:", UseUuidgen())
}