pallets/click

yt-dlp is a Python command-line downloader that pulls audio and video from thousands of sites and hands post-processing off to ffmpeg. It's a fork of youtube-dl built for people who want fast fixes when a site breaks, not a polished app.

DevOps Exercises is a GitHub repository collecting 2624 questions and exercises spanning Linux, networking, Kubernetes, Terraform, and cloud platforms, written as plain markdown Q&A with no app or course wrapped around it.

fzf is a Go-based command-line fuzzy finder that turns any piped list — files, shell history, running processes — into an interactively searchable menu, with official shell integration for Bash, Zsh, Fish, and Nushell plus a Vim/Neovim plugin. It's released under the MIT license and distributed as a single binary across Homebrew, most Linux package managers, and Windows package managers like Scoop and Chocolatey.

DeerFlow is ByteDance's open-source super agent harness — a Gateway API, sandbox layer, and LangGraph-backed checkpoint store for running multi-agent AI tasks that take minutes to hours rather than seconds. Version 2.0 is a full rewrite of the original Deep Research framework, adding a setup wizard, broader LLM provider support (including CLI-backed Codex and Claude Code auth), and a documented multi-worker production path built on Postgres and Redis.