Go has a vibrant ecosystem of libraries that can accelerate development. This guide highlights some popular, high-quality libraries across various categories. These are widely used and well-maintained, making them reliable choices for your projects.
Router
Routing libraries help manage HTTP requests and responses.
- gorilla/mux: A powerful URL router and dispatcher for building Go web servers. Supports URL parameters, regex matching, and middleware.
- julienschmidt/httprouter: High-performance HTTP request router with zero memory allocations in most cases.
Authentication
Libraries for handling user authentication and authorization.
- dgrijalva/jwt-go: A Go implementation of JSON Web Tokens (JWT). Essential for secure token-based authentication.
Tools for sending emails from Go applications.
- gopkg.in/gomail.v2: A simple and efficient library for composing and sending emails with attachments and HTML support.
Validation
Libraries for validating data structures and inputs.
- go-ozzo/ozzo-validation: A flexible validation library that supports struct validation with custom rules and error messages.
Database
Drivers and libraries for database interactions.
- globalsign/mgo: The MongoDB driver for Go, providing a rich API for MongoDB operations (note: now maintained by globalsign).
Logging
Libraries for structured logging.
- sirupsen/logrus: A structured logger for Go with support for hooks, levels, and JSON formatting.
- hashicorp/logutils: Utilities for filtering and formatting log output.
Comments and CMS
Tools for adding comments or content management.
- Utterances: An open-source GitHub comments widget built on GitHub issues. Easy to integrate for static sites.
- umputun/remark: An open-source commenting system written in Go, easy to run with Docker.
CSV Parsing
Libraries for handling CSV data.
- kniren/gota/dataframe: Part of the Gota library, provides data frame operations including CSV reading/writing.
Caching
In-memory caching solutions.
- patrickmn/go-cache: A simple, thread-safe in-memory cache with expiration support.
Regex
Regular expression utilities.
- mingrammer/commonregex: A collection of common regular expressions for extracting data like emails, URLs, and phone numbers.
Language Detection
Libraries for detecting the language of text.
- abadojack/whatlanggo: A Go port of the Whatlanggo library for language detection.
NLP (Natural Language Processing)
Tools for processing human language.
- jdkato/prose: A natural language processing library for English, supporting tokenization, POS tagging, and named-entity extraction.
Web Scraping
Libraries for scraping and parsing web content.
- andrewstuart/goq: An HTML deserialization and scraping library based on goquery and struct tags.
- andybalholm/cascadia: The CSS selector library used by goquery.
- suntong/cascadia: A command-line interface for testing CSS selectors.
- gocolly/colly: A fast and elegant scraping framework for Go.
- gnulnx/goperf: A website performance testing tool that fetches static assets.
- MontFerret/ferret: Declarative web scraping with a query language.
- tacusci/berrycms: A simple CMS with plugin support.
- slotix/dataflowkit: A web scraping framework for Gophers.
- geziyor/geziyor: A fast web crawling and scraping framework with JS rendering support.
- foolin/pagser: A simple HTML parser to struct based on goquery.
- vhodges/stitcherd: A server for server-side includes using CSS selectors.
Chinese Word Segmentation
Libraries for segmenting Chinese text into words.
- huichen/sego: A Chinese word segmentation library.
- yanyiwu/gojieba: A Go port of the Jieba Chinese text segmentation library.
Conclusion
These libraries cover a wide range of functionalities and are chosen for their quality and community support. Always check the latest versions and documentation, as the Go ecosystem evolves quickly. For more options, explore the Awesome Go repository.