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Lychee is a fast, async, stream-based link checker written in Rust, designed to locate broken URLs and mail addresses across a wide range of text formats including Markdown, HTML, reStructuredText, and entire websites. Developed by the lycheeverse team, the tool is currently offered in version 0.22.0 and has reached its fifteenth public release, reflecting steady evolution since its first commit. By leveraging asynchronous I/O and concurrent streams, Lychee can process thousands of links per minute without blocking, making it suitable for continuous-integration pipelines, pre-deployment quality checks, documentation audits, and large-scale site-maintenance workflows. Users invoke the single binary from the command line, point it at local files or remote domains, and receive concise reports that classify each link as valid, redirected, or broken, complete with HTTP status codes and response times. Optional filters allow exclusion patterns, timeout tuning, and acceptance of custom status codes, while structured JSON output simplifies integration with issue trackers or dashboards. Because the entire engine is written in safe, compiled Rust, runtime dependencies are eliminated and cross-platform support is achieved with minimal footprint; binaries are provided for Windows, macOS, and Linux without further setup. The open-source project welcomes contributions on GitHub, where releases follow semantic versioning and changelog details accompany every tag. Lychee is available for free on get.nero.com, with downloads provided via trusted Windows package sources such as winget, always delivering the latest version, and supporting batch installation of multiple applications.
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