Serialization middleware
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@html-eslint/template-syntax-parser
Parse template syntax
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@oclif/core
base library for oclif CLIs
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@tryfabric/martian
Converts Markdown to Notion Blocks and RichText
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all2md
Convert PDF, Word, PowerPoint, HTML, email & 40+ formats to clean Markdown — and back. Built for LLMs, RAG & Python pipelines, with a built-in MCP server.
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aozora-flavored-markdown
Aozora Flavored Markdown — Rust dialect fusing CommonMark/GFM with 青空文庫 typography (ruby, bouten, 縦中横, 字下げ, 外字).
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argparse
CLI arguments parser. Native port of python's argparse.
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args-tokens
parseArgs tokens compatibility and more high-performance parser
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aspicio
DXF and vector-PDF viewer for the web and AI agents — TypeScript parse→tessellate→render engine with a WebGL viewer, React/Vue/Svelte/web-component bindings, HTTP API, MCP server, and an in-chat viewer for ChatGPT & Claude (MCP Apps)
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avif-serialize
Minimal writer for AVIF header structure (MPEG/HEIF/MIAF/ISO-BMFF)
Serialization Rust -
carve
A post-Markdown lightweight markup language with visual mnemonics and human-centered design.
Serialization JavaScript -
cheerio
The fast, flexible & elegant library for parsing and manipulating HTML and XML.
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chevrotain
Chevrotain is a high performance fault tolerant javascript parsing DSL for building recursive decent parsers
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chordsketch
A Rust implementation of the ChordPro music notation format — parser, renderers, and CLI
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claudex
Launch Claude Code locally using Bun to run against OpenAI-compatible endpoints with flexible model and configuration options.
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clickhouse-sql-parser
Writing clickhouse sql parser in pure Go
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command-line-args
A mature, feature-complete library to parse command-line options.
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commander
the complete solution for node.js command-line programs
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context-engine
🧠 Empower AI agents with instant knowledge of your business using structured markdown files for consistent, accurate outputs every time.
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css-tree
A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations
Serialization Web -
csvql
SQL queries for CSV files. Ultra-fast CSV query engine in Zig with SIMD parsing and parallel execution. CLI: csvql.
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dae-parser
Parser for the Collada (DAE) format
Serialization Rust -
dashdash
A light, featureful and explicit option parsing library.
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der-parser
Parser/encoder for ASN.1 BER/DER data
Serialization Rust -
DmarcAnalyzerApp
Open-source, self-hosted DMARC monitoring for agencies — unlimited domains, automatic report ingestion, no per-domain pricing.
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domparser-rs
A super fast html parser and manipulator written in rust.
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dork-operators-current
🔍 Discover validated Google dork operators to refine your searches, contributing to an accurate and up-to-date resource for effective data retrieval.
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gmail2md
Sync your Gmail messages labeled as receipts into your obsidian vault
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hyparquet
Parquet file parser for JavaScript
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jackspeak
A very strict and proper argument parser.
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lector
C++ library for parsing command line arguments. Supported on Linux, macOS, and Windows. Can be built with Bazel, CMake, or Meson.
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markbridge
Convert markup in multiple formats to Discourse-ready Markdown — via a predictable parse → AST → render pipeline.
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markdown
Obviously, a Markdown parser.
Serialization PHP -
markdown-editor-mcp-server
📝 Enhance your Markdown workflow with this MCP server, designed for structured editing and full compliance with MCP 2025 standards.
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markdown-it
Markdown-it - modern pluggable markdown parser.
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markdown-to-jsx
A very fast and versatile markdown toolchain. AST, React, React Native, SolidJS, Vue, Markdown, and HTML output available with full customization.
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marquery
Load markdown files with YAML frontmatter from a conventional directory layout, query them through a chainable API, resolve associated assets, and render content to HTML.
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marvdown
This is Marvdown ⚡️ A stupid simple Markdown parser
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mdast-util-to-markdown
mdast utility to serialize markdown
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mdast-util-to-string
mdast utility to get the plain text content of a node
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mdconvert
Convert DOCX and PDF to clean Markdown with AI image descriptions for AI agents and Claude Projects
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meow
CLI app helper
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micromark
small commonmark compliant markdown parser with positional info and concrete tokens
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MIMIGenRec
⚙️ Build and train flexible generative recommendation models with modular tools, multi-GPU support, and integration with Hugging Face and LlamaFactory.
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MiniLoRA
Fine-tune the Qwen2.5-0.5B model using LoRA. Learn the full medical LLM training pipeline through seven practical modules covering data preparation to ablation.
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mri
Quickly scan for CLI flags and arguments
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msgpack-tools
Command-line tools for converting between MessagePack and JSON
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nearley
Simple, fast, powerful parser toolkit for JavaScript.
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notion-md-crawler
A library to recursively retrieve and serialize Notion pages with customization for machine learning applications.
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officeparser
A robust, strictly-typed Node.js and Browser library for parsing office files (.docx, .pptx, .xlsx, .odt, .odp, .ods, .pdf, .rtf, .csv, .md, .html) and generating high-fidelity outputs in Markdown, HTML, CSV, RTF, and RAG-focused chunks.
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omega-edit
Open source library for building editors that can handle massive files, and multiple viewports.
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OptOut
Automate CCPA and CPRA data broker opt-out requests with this self-hosted CLI tool.
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pdf-parse
Pure TypeScript, cross-platform module for extracting text, images, and tabular data from PDFs. Run directly in your browser or in Node!
Serialization Web -
pdf2json
PDF file parser that converts PDF binaries to JSON and text, powered by porting a fork of PDF.JS to Node.js
Serialization Node.js -
perl-xml-parser
Perl module for parsing XML documents
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pgsql-ast-parser
Yet another simple Postgres SQL parser/modifier
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Prisma
Next-generation ORM for Node.js and TypeScript — type-safe database access and migrations.
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protobuf-c
Protocol buffers library
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protobuf-parse
Parse `.proto` files. Files are parsed into a `protobuf::descriptor::FileDescriptorSet` object using either: * pure rust parser (no dependencies) * `protoc` binary (more reliable and compatible with Google's implementation)
Serialization Rust -
Protocol Buffers
Language-neutral, platform-neutral mechanism for serializing structured data.
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redis-parser
Javascript Redis protocol (RESP) parser
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remarkable
Markdown parser, done right. 100% Commonmark support, extensions, syntax plugins, high speed - all in one.
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robots-parser
A specification compliant robots.txt parser with wildcard (*) matching support.
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sade
Smooth (CLI) operator 🎶
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semver-parser
Parsing of the semver spec.
Serialization Rust -
serialize
Single-header bitpacking serializer for C++ aimed at game networking
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serialize-to-javascript
Serialize a serde::Serialize item to a JavaScript literal template using serde_json
Serialization Rust -
svelte-eslint-parser
Svelte parser for ESLint
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swift-protobuf
Plugin and runtime library for using protobuf with Swift
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swift-toml
📄 Parse TOML configuration files easily with this robust Swift implementation, ensuring compliance and full support for all data types and structures.
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taskparser
A CLI tool to extract tasks and worklogs out of Markdown documents.
Serialization TypeScript -
telegram-md
Telegram MarkdownV2 formatter
Serialization TypeScript -
twig
Programmatic access to document structure (Markdown, HTML, etc.)
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url-metadata
Fetch a URL and scrape its metadata using Node.js or the browser. Can parse metadata from HTML strings or Response objects as well.
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wit-parser
Tooling for parsing `*.wit` files and working with their contents.
Serialization Rust -
x509-parser
Parser for the X.509 v3 format (RFC 5280 certificates)
Serialization Rust -
yargs
yargs the modern, pirate-themed, successor to optimist.
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yargs-parser
the mighty option parser used by yargs