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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git-url-parse
A Rust parser for the URLs used by git, extracting components and host provider details.
tree-sitter-svelte-ng
An incremental Tree-sitter grammar for Svelte component syntax.
EVP_BytesToKey
Reimplements OpenSSL's legacy EVP_BytesToKey key-derivation algorithm in pure JavaScript for compatibility with older OpenSSL-encrypted data.
Untitled UI Icons React
1,100+ hand-crafted Untitled UI icons packaged as tree-shakeable, typed React components.
tag-expressions
A small boolean-expression parser and evaluator for selecting Gherkin scenarios by tag, used by behave and other Cucumber-family test runners.
string.prototype.matchall
Spec-compliant ES2020 polyfill for String.prototype.matchAll.
accept-language
A tiny, dependency-free Rust library for parsing the HTTP Accept-Language header.
@connectrpc/validate
A Connect interceptor that validates RPC requests and responses using Protobuf constraints and CEL expressions.
use-device-pixel-ratio
A React hook that returns the device pixel ratio and reacts to changes across displays.
quickjs-rs
Sandboxed JavaScript and TypeScript execution for Python, running QuickJS inside a WebAssembly sandbox.
@tinyhttp/logger
Minimal and flexible HTTP request logger middleware for tinyhttp and Node.js.
node-client-sdk
LaunchDarkly's client-side feature-flag SDK for single-user Node.js apps, now superseded by the scoped @launchdarkly/node-client-sdk package.
tinyhtml5
A tiny, WHATWG-spec HTML5 parser that turns malformed real-world HTML into a clean Python ElementTree.
cssinjs-utils
Typed CSS-in-JS helper utilities that power Ant Design's style-generation, token-calculation, and CSS-variable pipeline.
@datadog/native-metrics
A native Node.js addon that collects CPU, V8 heap, garbage-collection, and event-loop metrics directly from libuv and V8 internals.
expr-eval-fork
A security-patched fork of expr-eval for safely parsing and evaluating math expressions in JavaScript without native eval().
url-parse
A Rust library that breaks URLs into scheme, credentials, domain, port, path, query, and anchor, with support for custom schemes.
estree-util-is-identifier-name
A tiny estree utility that checks whether a string or code point can be a valid ECMAScript identifier name.
@posthog/brand
PostHog's official brand assets — logo, colors, RoundHog font, and hedgehog illustrations as React components
React Data Grid (Grafana Fork)
A virtualized, keyboard-accessible React data grid with sorting, inline editing, row grouping, and frozen columns.
react-split-pane
A resizable, nestable split-pane React component for building draggable panel layouts.
Repomix
Packs an entire repository into a single AI-friendly file, complete with token counts, secret scanning, and an MCP server for direct AI assistant access.
Material Components for Web
Modular and customizable Material Design UI components for the web.
tinacms
Git-backed headless CMS that gives React apps live, in-context Markdown editing and a generated GraphQL content API.
