The Daily Index — Tuesday, September 15, 2026 · TLDR Index

Repositories, courses and useful tools

Resources & Tools

TLDR · Tool

XCODE

Xcode has all the tools needed to develop, test, and distribute apps for Apple platforms. Xcode 27 features coding agents powered by any model. Users can customize Xcode to the way they work and manage all of their devices in Device Hub. The release includes updates to performance and testing tools and enhancements to localization.

developer.apple.com

TLDR · GitHub repository

@SHADCN/LINT

@shadcn/lint is an agent-first linter for Tailwind design systems that works with existing design systems without any rewrite required.

github.com

TLDR AI · GitHub repository

TAU

Tau is a coding agent that lives in the terminal. It can read files, edit code, run commands, and keep a durable session history while streaming what it is doing. Tau was designed to be a teaching project for understanding the shape of a coding-agent system without starting from a giant production codebase. It ships with support for OpenAI-compatible endpoints.

github.com

TLDR AI · GitHub repository

ARTEMIS

ARTEMIS lets AI assistants and test suites use real phones like a human. It can execute testing workflows and everyday tasks on Android from natural language instructions, using element indices when available, with coordinate and visual locating fallbacks for custom interfaces. ARTEMIS checks targets before individual actions and returns blocked actions to the Operator for recovery. It supports long-running exploratory and stability tests.

github.com

TLDR Dev · Tool

SUNK COST

Sunk Cost estimates when local AI hardware will break even against paying for model APIs, and it is willing to conclude that it never will. The calculator factors in model fit, local speed, daily token use, context size, input-to-output ratio, electricity, API latency, and falling API prices.

sunkcost.ai

TLDR InfoSec · GitHub repository

PHP ANALYSIS TOOLS CATALOG

A curated, auto-updated catalog of PHP static-analysis, code-quality, linting, metrics, refactoring, and security tools.

github.com

TLDR InfoSec · GitHub repository

BOOST

Boost wraps the commands your agents already run, turning noisy logs into compact, structured context.

github.com

TLDR Design · Tool

GIT-BASED VISUAL DIFFING, MADE EASY

Switch back and forth between branches and visually compare UI changes side by side — without ever touching your own working tree.

sidebranch.dev

TLDR Design · Tool

THE BOOK OF MOTION

Why animation feels right, what it costs, and how to build it.

book.motion.dev

TLDR Design · Tool

GENERATIVE MEDIA PLATFORM FOR DEVELOPERS

The world's best generative image, video, and audio models, all in one place. Develop and fine-tune models with serverless GPUs and on-demand clusters.

fal.ai