Developer Tools

App DevTools groups browser-based tools for text, web code, encoding, validation, and data conversion tasks.

Docker Hub is a container image registry for developers to find, use, and share container images.

Awesome CLI provides a command-line tool for browsing and exploring Awesome lists.

Test beta versions of apps and App Clips with Apple TestFlight; the listing says it is not currently accepting new testers.

Download an entire website from the Internet Archive Wayback Machine with this Ruby command-line tool.

Command Not Found helps users identify which package provides a missing command and how to install it.

Open cached and archived versions of a webpage with CachedView, including Google Cache options.

Sourcegraph provides code search and context tools for developers working across repositories and large codebases.

Jupytext lets users represent Jupyter notebooks as Markdown documents or Julia, Python, and R scripts.

Yet-Another-Bench-Script estimates Linux server performance using fio, iperf3, and Geekbench.

Search a community-maintained directory of free public APIs, also available through a JSON API.

AWS Data Wrangler connects Pandas with AWS data services and databases, including Athena, Glue, Redshift, and S3.

Project Wallace analyzes CSS complexity, specificity, performance, and design tokens.

This repository collects templates for CLAUDE.md, Cursor rules, and PRPs used with AI coding assistants.

Claude Usage Tracker is a browser extension for viewing Claude usage information.

Frontman places an AI development agent in a framework or browser environment for working with code.

Website Carbon Calculator estimates a website’s carbon footprint using the Sustainable Web Design Model.

This GitHub Action checks AI coding context files for security issues, structural problems, and anti-patterns.

Browse a list of tools and programs for developers, DevOps teams, system administrators, and others.

This GitHub repository collects additional online utilities for developers, including contributions from its maintainer and others.

GitHub Readme Stats generates statistics cards for use in GitHub README files.

Python developers can use Zipline’s event-driven library to backtest algorithmic trading strategies.

Open URLs, files, or executables from command-line tools and scripts with the cross-platform open package.

Python developers can use Dash to build data apps and dashboards without requiring JavaScript.