echo

Echo is a high-performance, extensible and minimalist web framework for Go. According to its README, it is built on Go's standard `net/http` and interoperates with it through `echo.WrapHandler` and `echo.WrapMiddleware`, adding pieces the standard library leaves to the developer: a fast radix-tree router, request binding with a pluggable validator, a middleware ecosystem, and centralized error handling. The project is described as actively maintained, with `v5` as the current release line. Documentation resources listed include the official website (echo.labstack.com), a quick start guide, and a middleware documentation category. Help and questions are directed to GitHub Discussions. The documented feature overview covers: - An optimized HTTP router that prioritizes routes - Building RESTful APIs - Grouping APIs - An extensible middleware framework, definable at root, group or route level - Data binding for JSON, XML and form payloads - Helper functions for sending various HTTP responses - Centralized HTTP error handling - Template rendering with any template engine - Customizable logger formats - Extensive customization options - Automatic TLS via Let's Encrypt - HTTP/2 support Installation is done through the Go module system (`go get github.com/labstack/echo/v5`), and the README notes that the latest version supports the last four Go major releases and may work with older ones. A minimal example shows creating an Echo instance, registering the RequestLogger and Recover middleware, defining a GET route, and starting the server on port 8080 with a handler returning a plain string response. On version support, the README states that `v5` is the latest major version as of 2026-01-18, that an API_CHANGES_V5 document covers public API changes and upgrade notes between `v4` and `v5`, and that `v4` receives security and bug fixes until 2026-12-31. A ROADMAP file describes direction and the version support policy. Middleware maintained by the Echo team includes repositories for JWT, a contrib collection (casbin, gorilla/sessions, pprof), OpenTelemetry tracing and metrics, and Prometheus. The README also lists third-party middleware — among them OpenAPI/Swagger documentation generators, logging wrappers for zerolog, Zap and slog, an HTTP cache plugin based on Souin, a full-stack starter kit built with Echo, and a ProtoBuf server-code generator — while explicitly cautioning that the team does not guarantee the safety or quality of third-party entries. Contribution guidance asks contributors to use issues for everything: send a pull request for small changes, open an issue to discuss larger changes first, and include a test case, documentation and, where sensible, an example. Reporting issues, suggesting features and improving documentation are also listed as ways to help. Credits name the author, consultant, maintainers and contributors, and the project is released under the MIT license.