aws-emulator holds the lead as reverse engineering and agent skill packs crowd the top five

Fastest-growing this period

Counts come from GitHub's official stargazers/history endpoint: the stars gained on each day of the window. Project briefs and the reading notes below are editorial additions.

1. 1

   aws/aws-emulator : Test your code against AWS APIs locally, with no AWS account

   Rust

   Amazon's local emulator of the AWS APIs, built for building and testing: start it, point the AWS CLI or your SDK at its endpoint, and work against emulated resources without an AWS account. Rust tests can embed one isolated instance per test through its HTTP client, each release publishes per-service fidelity scores, and usage telemetry is on by default.

   +2,133
2. 2

   GoogleChrome/modern-web-guidance : Browser-vendor curated skills that keep your agent on the modern web

   A skill pack stewarded by the Chrome, Edge, Firefox and MDN teams that feeds coding agents curated guides to the modern web platform: view transitions, container queries, the Popover API, built-in AI and more. Its CLI searches guides, pulls one by ID, and scans your codebase for legacy patterns worth replacing.

   +1,597
3. 3

   morluto/rea : Point your agent at any app and learn how it works

   TypeScript

   A toolkit that lets your coding agent reverse engineer software without source code: it inspects native binaries through Hopper or Ghidra, JavaScript and Electron apps, .NET assemblies and websites, then explains how a feature works with the evidence and the limits behind each conclusion. Analysis runs locally, and the same tools work straight from your terminal.

   +1,546
4. 4

   janestreet/agent_skills : Jane Street teaches your agent to tutor you, Socratic style

   Jane Street's first public skill collection, built around the shared SKILL.md format. It ships one skill, socratic-tutor, which turns a language model into a strict personal tutor: it runs a diagnostic, draws a skill map from level 0 to 5, asks one question at a time, schedules spaced review and ends with an assessment. Copy the directory into your agent's skills folder.

   +1,322
5. 5

   pingdotgg/t3code : One control surface for every coding agent on your machine

   TypeScript

   From the T3 team, an open-source control surface for the coding agents already installed on your machine. It drives Claude Code, Codex, Cursor, Grok Build, OpenCode, Antigravity and fx through your own subscriptions, from a mobile app, web app or Electron desktop app. The stated bet is performance and openness: if it drifts, the code is all there to fork.

   +806
6. 6

   meta/astryx : Meta's internal design system, opened up with 150+ components

   TypeScript

   The design system that grew inside Meta over eight years, now open source in beta: 150+ accessible React components on React 19 and StyleX, seven themes you restyle through CSS variables, and a CLI for docs, scaffolding and codemods. It installs as plain CSS plus typed components with no build plugin, shaped so coding agents use it the same way people do.

   +803
7. 7

   Ebony-Vinyl/dsh-our-free-model : A dsh plugin that puts frontier models one install away, no login or API key

   JavaScript

   A plugin for the DeepSeek Harness shell: install it and the model picker fills with free frontier models like DeepSeek V4.1 Flash and Kimi K3, no login or key needed. Free lanes come straight from OpenCode's Zen and Kilo AI's public gateways, re-pulled every refresh. A local OpenAI-compatible relay port lets other tools call the same models, and usage stats stay on the machine.

   +791
8. 8

   storytold/craft-anything : Study how any app or game works, then have an agent rebuild it

   Rust

   A clean-room engine in pure Rust. Point it at a website, app or game: it studies the original with real inspection tools, then a coding agent builds your version in the stack you name and refines it against the original. Clean room mode works only from what is visible. Builds run through your own Claude Code; the 314 tools also work as CLI and MCP. Early alpha.

   +778
9. 9

   apex-compute/ANR : Frame generation you can add to existing PC games on NVIDIA, AMD and Intel GPUs

   C++

   A beta frame-generation tool from Apex Compute that installs into a game's folder, on GeForce, Radeon and Arc GPUs, Windows and Linux with Proton. nr-record, also in the repo, captures frame-generation inputs losslessly so the same frames replay through ANR FG or DLSS-G for comparison. Super resolution and ray reconstruction are the next betas; the ANR source is not open yet.

   +755
10. 10

    vercel-labs/ui : Keyboard, focus, popups and ARIA as a behavior library your agent can build with

    TypeScript

    A beta library from Vercel Labs: keyboard navigation, focus, selection, dismissal, popups, drag and drop and their ARIA become composable pieces in @ui-sdk/core, with adapters for React, Vue, Svelte, Solid and Web Components. Components are defined from behaviors and render identically across frameworks; a bundled ui-sdk skill lets a coding agent learn the pattern.

    +735

Ranking window: 2026-11-12 UTC, full day.