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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csv
Fast, flexible CSV reading and writing for Rust, with Serde support
tomli
A lil' TOML parser for Python — fast, spec-compliant, and dependency-free.
smol-toml
A small, fast, spec-compliant TOML parser and serializer for JavaScript
markdown-it-py
A CommonMark-compliant Markdown parser for Python, ported from the JS markdown-it
node-html-parser
A very fast HTML parser that builds a lightweight DOM tree with full CSS3 selector support.
mathjs
Extensive math library for JavaScript and Node.js with big numbers, complex numbers, units, and matrices.
jsoniter
A high-performance, 100% compatible drop-in replacement for Go's encoding/json.
@apidevtools/swagger-parser
Parses, validates, and dereferences Swagger 2.0 and OpenAPI 3.x specs in Node.js and browsers
@xmldom/xmldom
A pure JavaScript, W3C-standard DOMParser and XMLSerializer for parsing and building XML/HTML documents
colord
A tiny, dependency-free TypeScript library for parsing, converting, and manipulating colors in any format.
node-sql-parser
Parses SQL statements into an AST and converts them back to SQL across a dozen database dialects.
tree-sitter-typescript
TypeScript and TSX grammars for the tree-sitter incremental parsing framework.
bowser
A small, fast browser, platform, and rendering-engine detector for browser and Node environments
micromark
The smallest 100% CommonMark-compliant markdown parser, with GFM and MDX support
bytes
Tiny utility for parsing and formatting byte strings like '1kb'
Partial JSON
Parses incomplete JSON strings streamed token-by-token from an LLM into usable JavaScript values as they arrive.
html-react-parser
Converts HTML strings into React elements, working seamlessly on both server and client
feedparser
Parses RSS, Atom, RDF, CDF, and JSON feeds into one normalized Python dictionary.
tree-sitter-javascript
JavaScript and JSX grammar for the tree-sitter incremental parsing library
json_repair
Repair malformed JSON from LLMs, APIs, logs, and user input — a drop-in fallback for json.loads().
officeParser
Parse Office documents into a rich AST and generate Markdown, HTML, PDF, or RAG chunks
json-2-csv
Converts arrays of JSON documents to RFC 4180 compliant CSV and back, with native support for nested sub-documents.
humantime
A fast parser and formatter for std::time::Duration and SystemTime in human-friendly notation
oclif Core
The Node.js framework that powers Salesforce CLI and Heroku CLI, providing flag parsing, help generation, and a plugin system for building CLIs.
