Packages made for ⚙️ C/C++, 📦 Node.js, 🌐 Web, 🐚 Bash, and 🖥️ Command prompt.

Single-file C/C++ libraries (cpoach project)

The cpoach project was motivated by the need for easy-to-use, C/C++ libraries that can be effortlessly installed (via npm), and integrated into C/C++ projects - without the hassle of build systems (rather, just like #include <stdio.h>), and without including the third-party libraries into the project's version control. This is mainly to facilitate in-class demonstrations and assignments. The name cpoach is a playful nod to the idea of poaching awesome C/C++ libraries and making them easily accessible for educational purposes.

Issues or suggestions regarding a specific library can and should be directed to the original library repository. However, for issues or suggestions related to the cpoach project itself, please open an issue in this repository.

🍳 Army knives

Package	Description
⚙️ stb.c	stb single-file public domain libraries for C/C++; Sean Barrett (2014).
⚙️ plibsys.c	Highly portable C system library: threads and synchronization primitives, sockets (TCP, UDP, SCTP), IPv4 and IPv6, IPC, hash functions (MD5, SHA-1, SHA-2, SHA-3, GOST), binary trees (RB, AVL) and more. Native code performance; Alexander Saprykin (2010).
⌛ libgb.c	gb single-file public domain libraries for C & C++; gingerBill (2015).
⌛ prideout.c	single-file C libraries from Philip Allan Rideout; Philip Rideout (2015).

🍳 High Performance Computing (HPC)

Package	Description
⚙️ tinycthread.c	Small, portable implementation of the C11 threads API; Evan Nemerson (2012).
⚙️ pthreads4w.c	POSIX threads API for Windows from https://sourceforge.net/p/pthreads4w; Ben Elliston (1998).
⚙️ minicoro.c	Single header stackful cross-platform coroutine library in pure C; Eduardo Bart (2021).
⚙️ cds_sync.c	Single-header C90 collection of synchronization primitives; Cort Stratton (2015).
⚙️ buddy_alloc.c	A single header buddy memory allocator for C & C++; Stanislav Paskalev (2021).
⚙️ rfft.c	Reasonably fast Fourier transform in a single header for C and C++; grego (2023).
⚙️ xxhash.c	Extremely fast non-cryptographic hash algorithm; Yann Collet (2012).
⚙️ linmath.c	A lean linear math library, aimed at graphics programming. Supports vec3, vec4, mat4x4 and quaternions; Wolfgang Draxinger (2013).
⚙️ algebra3.cxx	Vector utilities for 2, 3, and 4 element vectors, all inline; Jean-Francois Doue, Paul S. Heckbert, and J. Nagle (1993).
⚙️ stb_stats.c	Single header file with a bunch of useful statistical functions such as ANOVA, Kruskal-Wallis, T-test, etc; Gerben Voshol (2018).
⌛ opencl.c	C/C++ language headers for the OpenCL API; The Khronos Group (2013).
⌛ clew.c	The OpenCL Extension Wrangler Library; Martijn Berger (XXXX).
⌛ bikeshed.c	Lock free hierarchical work scheduler; Dan Engelbrecht (2019).
⌛ subprocess.c	🐜 single header process launching solution for C and C++; Neil Henning (2017).
⌛ jemalloc.c	jemalloc is a general purpose malloc(3) implementation that emphasizes fragmentation avoidance and scalable concurrency support; Jason Evans (XXXX).
⌛ genann.c	simple neural network library in ANSI C; Lewis Van Winkle (2016).
⌛ kann.c	A lightweight C library for artificial neural networks; Attractive Chaos (2016).
⌛ robin-map.cxx	C++ implementation of a fast hash map and hash set using robin hood hashing; Thibaut Goetghebuer-Planchon (XXXX).
⌛ uthash.c	C macros for hash tables and more; Troy D. Hanson (2005).
⌛ cephes.c	Mirror of the Cephes C source for reference; Stephen L. Moshier (XXXX).
⌛ hypatia.c	A header-only, pure-C math library for 2D/3D graphics (matrix, vector, quaternion) Seeks to be close to C89/C90 compliant for portability. It's like a BLAS, but easier to use; Darryl T. Agostinelli (2015).
⌛ handmademath.c	A simple math library for games and computer graphics. Compatible with both C and C++. Public domain and easy to modify; Ben Visness (2016).
⌛ ccvector.c	A vector and matrix math library; Job Talle (2015).
⌛ doops.c	Single C file event loop; Eduard Suica (2019).
⌛ ranxoshi256.c	Portable, single-file, PRNG library implementing the xoshiro256** algorithm; BareRose (2018).
⌛ uuid4.c	UUID v4 generation in C; Grégory Pakosz (2019).
⌛ uuid_h.c	Single file, STB-style, "lib" to generate uuid:s; Fredrik Kihlander (2016).
⌛ range-v3.cxx	Range library for C++14/17/20, basis for C++20's std::ranges; Eric Niebler (XXXX).

🍳 Computer Graphics

Package	Description
⚙️ clay.c	High performance UI layout library in C; Nic Barker (2024).
⚙️ tigr.c	TIGR - the TIny GRaphics library for Windows, macOS, Linux, iOS and Android.
⚙️ rgfw.c	A cross platform lightweight single-header simple-to-use window abstraction library for creating graphical programs or libraries; Riley Mabb (2023).
⚙️ glfw3.c	A multi-platform library for OpenGL, OpenGL ES and Vulkan development on the desktop; Marcus Geelnard (2002).
⚙️ glad.c	Vulkan/GL/GLES/EGL/GLX/WGL Loader based on the official specs, using glad by David Herberth (2013).
⚙️ vulkan.c	Vulkan header files and API registry; The Khronos Group (2018).
⚙️ egl.c	EGL API and Extension Registry; The Khronos Group (2016).
⚙️ voxelizer.c	Header only mesh voxelizer in c99; Karim Naaji (2016).
⚙️ rang.cxx	A Minimal, Header only Modern c++ library for terminal goodies; Abhinav Gauniyal (2016).
⌛ sdl3.c	Simple DirectMedia Layer; Sam Lantinga (1997).
⌛ openvr.c	OpenVR SDK; Valve Software (XXXX).
⌛ openmodal.c	Dependency free, cross-platform, single header lib to open native file modals; bzt (2023).
⌛ tinyfiledialogs.c	Modal dialogs inc. file open/save (Win/Mac/Linux); Guillaume Vareille (2014).
⌛ lightmapper.c	A C/C++ single-file library for drop-in lightmap baking. Just use your existing OpenGL renderer to bounce light; ands (2016).
⌛ sdl3.c	Simple DirectMedia Layer; Sam Lantinga (1997).
⌛ glew.c	The OpenGL Extension Wrangler Library; Milan Ikits and Marcelo Magallon (2002).
⌛ rfont.c	Simple-to-use single header modular font rendering library written in C; Riley Mabb (2023).

🍳 Video

Package	Description
⚙️ pl_mpeg.c	Single file C library for decoding MPEG1 Video and MP2 Audio; Dominic Szablewski (2019).
⌛ jo_mpeg.c	Simple, Minimalistic, No Allocations MPEG writer - without audio; Jon Olick and Wladislav Artsimovich (2016).

🍳 Audio

Package	Description
⚙️ miniaudio.c	Audio playback and capture library written in C, in a single source file; David Reid (2016).
⌛ dr_libs.c	Audio decoding libraries for C/C++, each in a single source file; David Reid (2015).
⌛ tflac.c	A single file, freestanding FLAC encoding library in C89; John Regan (2024).
⌛ minimp3.c	Minimalistic MP3 decoder single header library; Lion (2018).
⌛ pocketmod.c	Small ANSI C library for turning ProTracker MOD files into playable PCM audio; rombankzero (2018).
⌛ atomix.c	Portable, single-file, wait-free atomic sound mixing library utilizing SSE-accelerated mixing; BareRose (2018).

🍳 Networking

Package	Description
⌛ mongoose.c	Embedded web server, with TCP/IP network stack, MQTT and Websocket; Cesanta Software (2010).
⌛ webby.c	A tiny webserver for game development; Andreas Fredriksson (2012).
⌛ concord.c	A Discord API wrapper library made in C; Cogmasters (2020).

🍳 Compression

Package	Description
⚙️ lz4.c	Extremely Fast Compression algorithm; lz4 (2011).
⚙️ dmc_unrar.c	A dependency-free, single-file FLOSS unrar library; Sven Hesse (2017).
⌛ microtar.c	A lightweight tar library written in ANSI C; rxi (2016).
⌛ miniz.c	miniz: Single C source file zlib-replacement library, originally from code.google.com/p/miniz; Rich Geldreich (2011).

🍳 Cryptography

Package	Description
⌛ monocypher.c	An easy to use, easy to deploy crypto library; Loup Vaillant (2016).

🍳 Serialization

Package	Description
⚙️ parson.c	Lightweight JSON library written in C; Krzysztof Gabis (2012).
⚙️ mini.cxx	INI file reader and writer; Danijel Durakovic (2018).
⚙️ lurlparser.cxx	Lightweight URL & URI parser (RFC 1738, RFC 3986); Sergey Kosarevsky (2015).
⚙️ parg.c	Parser for argv that works similarly to getopt; Jørgen Ibsen (2015).
⌛ inih.c	Simple .INI file parser in C, good for embedded systems; Ben Hoyt (2009).
⌛ yxml.c	Yxml is a small (6 KiB) non-validating yet mostly conforming XML parser written in C; Yorhel (2013).
⌛ tiny-json.c	The tiny-json is a versatile and easy to use json parser in C suitable for embedded systems. It is fast, robust and portable; Rafa Garcia (XXXX).
⌛ model3d.c	3D model format specification and single header SDK. Supports skeletal animations, voxels and has the best data density; bzt (2019).
⌛ tinyobjloader.c	Header only tiny wavefront .obj loader in pure C99; Syoyo Fujita (2016).
⌛ fast_obj.c	Fast C OBJ parser; Richard Knight (2018).
⌛ cgltf.c	💠 Single-file glTF 2.0 loader and writer written in C99; Johannes Kuhlmann (2018).
⌛ qr-code-generator.c	High-quality QR Code generator library in Java, TypeScript/JavaScript, Python, Rust, C++, C; Nayuki (2016).
⌛ cmp.c	An implementation of the MessagePack serialization format in C / msgpack.org; Charlie Gunyon (2014).
⌛ libcmdf.c	Single-header library for writing CLI applications in C/C++; Ronen Kreimer (2017).
⌛ kgflags.c	kgflags is an easy to use command-line flag parsing library; Krzysztof Gabis (2020).
⌛ linenoise.c	A small self-contained alternative to readline and libedit; Salvatore Sanfilippo (2010).

🍳 Text Processing

Package	Description
⚙️ remimu.c	Single-file header-only regex engine, C99/C++11; Alexander Nadeau (2024).
⚙️ slre.c	Super Light Regular Expressions; Aquefir (2013).
⚙️ unformat.cxx	Fastest type-safe parsing library in the world for C++14 or C++17 (up to 300x faster than std::regex); Adam Yaxley (2017).
⚙️ ggformat.cxx	A string formatting library for C++; Michael Savage (2017).
⚙️ utf8.c	📚 Single header utf8 string functions for C and C++; Neil Henning (2015).
⚙️ utf8proc.c	A clean C library for processing UTF-8 Unicode data; Steven G. Johnson (2014).
⚙️ wcwidth9.c	Platform independent, header only, wcwidth with full unicode 9 support; Joshua Rubin (2016).
⌛ str.c	str: yet another string library for C language; Maxim (2020).
⌛ csplit.c	A single header C library to simplify splitting and processing strings; Jakub Wlodek (2019).
⌛ stmr.c	Porter Stemmer algorithm in C; Titus (2014).
⌛ levenshtein.c	Levenshtein algorithm in C; Titus (2015).
⌛ fmt.cxx	A modern formatting library; Victor Zverovich (XXXX)

🍳 Emulation/Scripting

Package	Description
⚙️ pocketpy.c	Portable Python 3.x Interpreter in Modern C for Game Scripting; pocketpy (2022).
⚙️ minilua.c	Single-file port of Lua, a powerful scripting language; Eduardo Bart (2020).
⚙️ my_basic.c	A lightweight BASIC interpreter written in standard C in dual files. Aims to be embeddable, extendable and portable; Tony Wang (2014).
⚙️ tinyexpr.c	Tiny recursive descent expression parser, compiler, and evaluation engine for math expressions; Lewis Van Winkle (2016).
⚙️ chasm.c	Chasm Runtime Assembler; Aqil Contractor (2025).
⌛ webview.c	Tiny cross-platform webview library for C/C++. Uses WebKit (GTK/Cocoa) and Edge WebView2 (Windows); Serge Zaitsev (2017).
⌛ fex.cxx	A fast usermode x86 and x86-64 emulator for Arm64 Linux; Ryan Houdek (XXXX).
⌛ vixl.c	AArch32 and AArch64 Runtime Code Generation Library; Linaro (XXXX).
⌛ agnes.c	NES emulation library with an easy to use API; Krzysztof Gabis (2019).
⌛ apelang.c	Ape Programming Language; Krzysztof Gabis (2020).
⌛ softfloat3.c	SoftFloat release 3; John Hauser (XXXX).

🍳 Testing/Debugging

Package	Description
⚙️ debugbreak.c	Break into the debugger programmatically; Scott Tsai (2011).
⚙️ b_stacktrace.c	A minimalistic single-header multi-platform C89 lib for stack tracing; Borislav Stanimirov (2020).
⌛ remotery.c	Single C file, Realtime CPU/GPU Profiler with Remote Web Viewer; Celtoys (2014).
⌛ tracy.cxx	Frame profiler; Bartosz Taudul (XXXX).
⌛ errnoname.c	errnoname is a C library that lets us get the symbolic name for each errno integer value; mentalisttraceur (2019).
⌛ fctx.c	C unit testing in a header (works for C++ too!); Ian Blumel (2008).
⌛ greatest.c	A C testing library in 1 file. No dependencies, no dynamic allocation. ISC licensed; Scott Vokes (2012).
⌛ utest.c	An ultra-lightweight, micro unit test framework for C99 presented as a single-header; Oli Wilkinson (2015).
⌛ utest-h.c	🧪 single header unit testing framework for C and C++; Neil Henning (2015).
⌛ minctest.c	tiny unit testing framework for ANSI C; Lewis Van Winkle (2015).
⌛ labrat.c	Simple, single-file test harness for C/C++; Alex Thayer (2016).
⌛ munit.c	µnit is a small testing framework for C; Evan Nemerson (2016).
⌛ rexo.c	Neat single-file cross-platform unit testing framework for C/C++; Christopher Crouzet (2018).
⌛ picotest.c	Picotest is a minimal C89 unit test framework, consisting of a single header file that defines 7 macros.; colinbarry (2020).
⌛ clove-unit.c	Single-Header Unit Testing framework for C (interoperable with C++) with test autodiscovery feature; Federico De Felici (2021).
⌛ walter.c	Write unit tests in C with no boilerplate; irek (2022).

🍳 Others (C)

Package	Description
⚙️ hedley.c	A C/C++ header to help move #ifdefs out of your code; Evan Nemerson (2016).
⌛ endianness.c	Simple public domain header to get endianess at compile time on a variety of platforms; rofl0r (2017).

Source: r-lyeh/single_file_libs

See more:

• Libraries developed by Eskil Steenberg

🍳 Others (C++)

Package	Description
⌛ asap.cxx	A C++ header-only library for creating, displaying, iterating and manipulating dates; Leonardo Guilherme de Freitas (2017).
⌛ canvas_ity.cxx	A tiny, single-header canvas-like 2D rasterizer for C++; Andrew Kensler (2022).
⌛ catch2.cxx	A modern, C++-native, test framework for unit-tests, TDD and BDD - using C++14, C++17 and later (C++11 support is in v2.x branch, and C++03 on the Catch1.x branch); Martin Hořeňovský (2010).
⌛ cds_job.cxx	C++11 lock-free job queue; Cort Stratton (2016).
⌛ cimg.cxx	The CImg Library is a small and open-source C++ toolkit for image processing; GREYC (2018).
⌛ cista.cxx	Cista is a simple, high-performance, zero-copy C++ serialization & reflection library; Felix Gündling (2018).
⌛ cmdline.cxx	A Command Line Parser; Hideyuki Tanaka (2009).
⌛ cpp-httplib.cxx	A C++ header-only HTTP/HTTPS server and client library; yhirose (2012).
⌛ cpp-mmaplib.cxx	A single file C++11 header-only memory mapped file library; yhirose (2016).
⌛ cpp-peglib.cxx	A single file C++ header-only PEG (Parsing Expression Grammars) library; yhirose (2015).
⌛ cpp-unicodelib.cxx	A C++17 header-only Unicode library. (Unicode 16.0.0); yhirose (2016).
⌛ debug-draw.cxx	Immediate-mode, renderer agnostic, lightweight debug drawing API; Guilherme Lampert (2015).
⌛ doctest.cxx	The fastest feature-rich C++11/14/17/20/23 single-header testing framework; Viktor Kirilov (2016).
⌛ flags.cxx	⛳ Simple, extensible, header-only C++17 argument parser released into the public domain; sailormoon (2016).
⌛ hippomocks.cxx	Single-header mocking framework; Peter Bindels (2008).
⌛ imgui.cxx	Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies; Omar (2014).
⌛ immediate2d.cxx	A C++ drawing framework for Windows that makes simple graphics programming as fun and easy as the days when computers booted directly to a BASIC prompt; Nicholas Piegdon (2017).
⌛ inja.cxx	A Template Engine for Modern C++; Berscheid (2017).
⌛ jargsparser.cxx	A head-only arguments parser(argsparser) c++11 lib; Zhengqiao Wang (2022).
⌛ json.cxx	JSON for Modern C++; Niels Lohmann (2013).
⌛ linalg.cxx	linalg.h is a single header, public domain, short vector math library for C++; Sterling Orsten (2016).
⌛ lurlparser.cxx	Lightweight URL & URI parser (RFC 1738, RFC 3986); Sergey Kosarevsky (2015).
⌛ micropather.cxx	MicroPather is a path finder and A* solver (astar or a-star) written in platform independent C++ that can be easily integrated into existing code. MicroPather focuses on being a path finding engine for video games but is a generic A* solver; Lee Thomason (2012).
⌛ microprofile.cxx	microprofile is an embeddable profiler; Jonas Meyer (2013).
⌛ mini-yaml.cxx	Single header YAML 1.0 C++11 serializer/deserializer; Jimmie Bergmann (2018).
⌛ obfuscate.cxx	Guaranteed compile-time string literal obfuscation header-only library for C++14; Adam Yaxley (2017).
⌛ parg.cxx	A header only c++ library for parsing command line arguments and generating usage/help output; Brett Robinson (2018).
⌛ programoptions.cxx	Single-header program options parsing library for C++11; Fytch (2017).
⌛ pugixml.cxx	Light-weight, simple and fast XML parser for C++ with XPath support; Arseny Kapoulkine (2006).
⌛ random.cxx	Random for modern C++ with convenient API; Illia (2017).
⌛ simple-svg.cxx	Easy to use SVG library for C++ (fork of legacy Google code project archive); Adi Shavit (2015).
⌛ str_view.cxx	Null-termination-aware string-view class for C++; Adam Sawicki (2018).
⌛ str.cxx	Lightweight C++ string type with a configurable local buffer; Omar (2015).
⌛ swarmz.cxx	A free, header-only C++ swarming (flocking) library for real-time applications; Michael (2016).
⌛ tinyformat.cxx	Minimal, type safe printf replacement library for C++; Claire Foster (2011).
⌛ tinyobjloader.cxx	Tiny but powerful single file wavefront obj loader; tinyobjloader (2012).
⌛ tinyply.cxx	🌍 C++11 ply 3d mesh format importer & exporter; Dimitri Diakopoulos (2015).
⌛ tinythread.cxx	Cross-platform implementation of the C++11 Threads API; Marcus Geelnard (2010).
⌛ tinyxml2.cxx	TinyXML2 is a simple, small, efficient, C++ XML parser that can be easily integrated into other programs; Lee Thomason (2011).
⌛ tomlplusplus.cxx	Header-only TOML config file parser and serializer for C++17; Mark Gillard (2020).
⌛ trompeloeil.cxx	Header only C++14 mocking framework; Björn Fahller (2014).
⌛ utl.cxx	Collection of self-contained header-only libraries for C++17; DmitriBogdanov (2023).
⌛ visit_struct.cxx	A miniature library for struct-field reflection in C++; Chris Beck (2016).
⌛ vulkanmemoryallocator.cxx	Easy to integrate Vulkan memory allocation library; GPUOpen Libraries & SDKs (2017).
⌛ xatlas.cxx	Mesh parameterization / UV unwrapping library; Jonathan Young (2016).

Source: r-lyeh/single_file_libs

Node.js / Web

Package	Description
🌐 extra-boolean	Boolean data type has two possible truth values to represent logic.
🌐 extra-bit	The bit is a basic unit of information in information theory, computing.
🌐 extra-integer	A 32-bit integer can store values from −2^31 to 2^31 − 1.
🌐 extra-number	A number is a mathematical object used to count, measure, and label.
🌐 extra-bigint	A BigInt can represent whole numbers larger than 2⁵³ - 1.
🌐 extra-math	Mathematics is the classification and study of all possible patterns.
🌐 extra-function	A function is a set of statements that performs a task or calculates a value.
🌐 extra-async-function	An async function is a function that delivers its result asynchronously (through Promise).
🌐 extra-array	An Array is a collection of values, stored contiguously.
🌐 extra-iterable	An iterable is a sequence of values.
🌐 extra-object	An Object is a collection of properties (entries), each with a name (key) and a value.
🌐 extra-set	A Set is a collection of unique values.
🌐 extra-map	A Map is a collection of key-value pairs, with unique keys.
🌐 extra-entries	Entries is a list of key-value pairs, with unique keys.
📦 extra-child-process	Useful additions to inbuilt child_process module.
🌐 extra-path	Useful additions to inbuilt path module.
📦 extra-fs	Useful additions to inbuilt fs module.
🌐 extra-sleep	Sleep for specified time.
🌐 extra-jsdoc-text	Utilities for processing JSDoc text.
🌐 extra-javascript-text	Utilities for processing JavaScript text.
🌐 extra-markdown-text	Utility methods for Markdown text.
📦 extra-build	Common build tools for extra-* packages.
⌛ extra-lists	Lists is a pair of key list and value list, with unique keys.
⌛ extra-string	A collection of common string functions.
⌛ extra-wordnet	WordNet is a lexical database of semantic relations between words.
⌛ extra-sorted-array	A sorted array is a collection of values, arranged in an order.

Bash / Command prompt (CLI)

Package	Description
🐚 cls.sh	Clear screen and scrollback on Linux.
🖥️ clear.cmd	Clear screen like Unix in Windows Command prompt.
🖥️ sleep.cmd	Sleep for specified time in Windows Command prompt.
🐚 extra-cd	Change the working directory, with shortcuts and listing.
🐚 extra-bel.sh	Produce BEL sound in Linux Terminal.
🐚 nvgraph.sh	CLI for nvGraph, which is a GPU-based graph analytics library written by NVIDIA, using CUDA.
🐚 snap-data.sh	CLI for SNAP dataset, which is a collection of more than 50 large networks.

My Story

During my research work (2021-23), I develop a CLI for nvGraph - a GPU-based graph analytics library by NVIDIA, using CUDA; and a CLI for SNAP dataset - a collection of more than 50 large networks. To minimize manual work, I write scripts to Shorten author, editor, journal, and booktitle in a BibTeX file, another to Get publications list from DBLP as a table in LaTeX or in BibTeX for references, one to Make a gist secret by creating a new secret gist, and deleting the old one, and another to Sync a file to a Git repository (such as GitHub Gist) periodically in Node.js. For a short-term course on Distributed Systems, I design of a simple UDP/datagram based NTP-like client and server using Node.js to simulate the effect of transmission delays in a local, intra-continental, and inter-continental network. In 2015-16, I design a few Windows applications. These include a Countdown timer for Windows, a tool to Calculate an 8-bit hash of a given string using XOR+ROR method, another to Terminate unnecessary/unused processes in Windows, and one to Determine the IP address of a Website from its URL. I also write an Intel 4004 assembler in Node.js that converts a plain assembly language file to binary. While working at Verizon Hyderabad with Prashant Pathak, we develop a Wireless RFID-based Snacks Ticketing System using a Raspberry Pi with a Weigand based HID reader.

I also write and maintain a diverse range of Open source packages for Node.js. These include tools to Tunnel web server from private IP, perform automated trades with a Javascript interface for FYERS API, get Insightful quotes on a topic, and get SPDX License text. In 2018-19, I note the release of Google's new WaveNet based Text-To-Speech (TTS) engine. I use this opportunity to write a tool that Crawls Wikipedia pages and uploads TTS to YouTube. These videos are available upon searching "wikipedia audio article". To support this, I write tools to get GCP/AWS config, use long text with Google TTS/Amazon Polly through a Common tool, Interface with FFMPEG, Generate still video from an audio and image file, Modify Ian Bishop's YouTube Uploader to handle captions, and Interface with the modified YouTube uploader from Node.js.

In 2017-18, I use full-text search in PostgreSQL to build a hand-crafted Natural Language Query System for Indian Food Composition Tables 2017 (IFCT2017). IFCT2017 is published by T. Longvah, R. Ananthan, K. Bhaskarachary, and K. Venkaiah from National Institute of Nutrition (NIN). It contains detailed nutrient composition of 528 key foods in India. I use a PDF to Excel converter to read data in tables of each page, merge them together, fix conversion issues through manual checking, and convert it to CSV. Further, I adjust the units used for each nutrient to grams, and add additional relevant high-level columns. Finally I write a Node.js package to get Programmatic access to this Compositions data. Data from a number of additional tables, including the compositions data, is available in the Main package. To support natural language queries, I convert the English language query to an informal SQL first, perform Named Entity Recognition (NER) with Promised Map interface for Table in PostgreSQL, and then convert Informal SQL SELECT to formal SQL. Testing required constant resetting and provisioning of new databases. For this, I write a script to Manage Addon Pool of an App in Heroku. I also prepare CLI tools to convert E numbers and INS numbers of food additives to their respective full names.

I also maintain collections of functions for in-built types in Node.js, such as, Arrays, Sets, Maps, Objects, Iterables, Entries, Lists, IEntries, ILists, Sorted Arrays, Array Views, Booleans, Bits, Integers, Numbers, Strings, BigInts, Functions, and Async Functions. In addition, I extend in-built modules, such as, File System (FS), Child Process, Path, and Math. To support the automated building, testing, and documentation generation, I write and use a special Build tool - this requires utilities for processing JavaScript, JSDoc, and Markdown text. Building documentation for some packages requires the use of a Custom TypeDoc theme. To generate ASCII videos of examples automatically, an Asciinema-based tool can be used. To delete old/unused packages automatically, I write a tool to Delete NPM packages in an organization using Puppeteer. I originally conceived of maintaining Open source code as a potential business venture - which allows me to make passive money through donations. However, the market was already bustling with utility packages. Despite meticulous documentation and detailed list of functions, differentiation proved elusive.