Open Source

Built in the open.

Libraries, tools, and extensions we use every day — open-sourced so everyone can benefit. Sharp, focused, and built to stay out of your way.

Libraries

JavaScript · TypeScript

Kyori

String distance and similarity metrics for JavaScript — Levenshtein, Damerau-Levenshtein, Hamming, Jaro-Winkler, and the Kyori ranking algorithm, every one implemented natively. The bundled KyoriIndex turns a term list into a ready-made autocomplete backend.

In Japanese, 距離 (きょり) means "distance".

Levenshtein, Damerau-Levenshtein, Hamming, Jaro-Winkler — all native
Kyori ranking folds case, accents, and hyphens, and survives typos
KyoriIndex: load terms once, search() returns them scored, best first

Docs npm GitHub

JavaScript · TypeScript

WizJS

A curated set of utilities for more maintainable everyday JavaScript — without becoming another lodash. Ports Python's itertools, functools, and collections to JS, with zero runtime dependencies.

Python stdlib in JS — 19 lazy itertools generators, functools, Counter, DefaultDict
Zero runtime dependencies — nothing else comes along
Multi-stack support across Node, browser, and edge runtimes

Docs npm GitHub

Stand-alone Tools

CLI · Go

json2jsonl

A lightweight command-line tool to convert one or many JSON files into a single JSONL (JSON Lines) output. Pipe-friendly — output goes to stdout when no file is specified.

Batch-convert multiple JSON files in one command
Pipe output directly to grep, jq, or any Unix tool
Pre-built binaries for macOS (Intel & Apple Silicon), Linux, and Windows

Docs & Download GitHub

CLI · Go

trimmer

A single-purpose command-line filter that reads stdin and writes it back without the leading and trailing whitespace. Trims the whole input by default, or every line individually with --lines.

Unicode-aware trimming — tabs, CRLF, NBSP, and the rest, not just spaces
--no-newline gives command substitution the exact value, with nothing clinging to it
Pre-built binaries for macOS, Linux, and Windows on both x86_64 and ARM

Docs & Download GitHub

IDE Extensions

VS Code Extension · Python

Practical UV

Bring the power of uv — the blazing-fast Python package manager — directly into VS Code. Works with both pyproject.toml and requirements.txt: detect outdated dependencies and known vulnerabilities, convert pip projects to uv in one click, and run uv commands without leaving your editor.

Outdated dependency detection in pyproject.toml and requirements.txt with one-click upgrades
Known-vulnerability checks against the OSV advisory database — CVE, severity, and the version that fixes it
uv.lock resolves declared ranges to exact versions, so findings mean you are affected, not merely permitted
One-click conversion of requirements.txt projects to uv from the status bar
Interactive dependency dashboard with current vs. latest PyPI versions and Upgrade buttons
Quick-fix project version bumps and Python version picker (sourced from endoflife.date)
Run uv sync, add, and run from the VS Code command palette

Docs VS Code Marketplace Open VSX GitHub