Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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thiserror
A derive macro for ergonomic, zero-boilerplate custom error types in Rust.
anyhow
Flexible, idiomatic error handling for Rust applications with a single concrete error type.
Collision
Beautiful command-line error reporting for PHP apps and test suites
markdown-it-py
A CommonMark-compliant Markdown parser for Python, ported from the JS markdown-it
zod-validation-error
Turns raw Zod validation issues into clear, human-readable error messages.
showdown
A bidirectional Markdown-to-HTML and HTML-to-Markdown converter for JavaScript, usable in Node or the browser.
Markdown
The reference Python implementation of John Gruber's Markdown, with a pluggable extension system for converting text to HTML.
html2text
Converts HTML into clean, readable Markdown-formatted plain text, as both a Python library and a CLI tool.
serialize-error
Serialize and deserialize JavaScript Error objects into plain, JSON-safe objects and back.
error-stack-parser
Cross-browser JavaScript library that parses Error objects into structured stack frames with function names, file paths, and line/column numbers.
MyST Parser
An extended CommonMark-compliant Markdown parser with first-class bridges to docutils and Sphinx.
slog-multi
Compose Go's log/slog handlers into fanout, routing, failover, and load-balancing pipelines.
ajv-errors
Custom, human-readable error messages for Ajv JSON Schema validation
EasyMDE
An embeddable, drop-in JavaScript Markdown editor with a customizable toolbar, live syntax styling, autosaving, and built-in spell checking.
boom
HTTP-friendly error objects for building consistent, well-formed API error responses in Node.js.