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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electron-store
Simple, encrypted JSON persistence for your Electron app — save user settings, window state, and cache across the main and renderer processes.
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.
json-schema
A lightweight, historical CommonJS implementation of the original JSON Schema draft specifications
ExcelJS
Read, manipulate, and write XLSX spreadsheet data, styles, and formulas in JavaScript
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.
openapi-ts
OpenAPI-to-TypeScript code generator producing production-grade SDKs, Zod schemas, and TanStack Query hooks.
JSON-Patch
Lean, high-performance RFC 6902 JSON Patch and JSON Pointer implementation for applying, generating, validating, and observing diffs between JSON documents.
@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.
JSONPath
A JavaScript library for querying, transforming, and extracting data from JSON documents using an extended JSONPath syntax.
node-sql-parser
Parses SQL statements into an AST and converts them back to SQL across a dozen database dialects.
PyMuPDF
A high-performance Python library for extracting, rendering, converting, and manipulating PDF and other document formats.
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'
@rjsf/core
The React engine that turns a JSON Schema into a fully working form
sjson
A fast, dependency-light Go library for setting and deleting values in JSON documents by dot-path, without full unmarshaling.
conf
Simple, schema-validated config file persistence for Node.js apps and CLI tools
serde_with
Custom de/serialization helpers for Rust's serde, via the with and serde_as annotations
Partial JSON
Parses incomplete JSON strings streamed token-by-token from an LLM into usable JavaScript values as they arrive.
