The Daily Index — Friday, February 20, 2026 · TLDR Index

Repositories, courses and useful tools

Resources & Tools

TLDR Dev · GitHub repository

CMUX

cmux is a native macOS terminal application built with Swift and AppKit that extends the Ghostty experience with vertical tabs and GPU acceleration. It has an intelligent notification system that visually alerts users when AI coding agents require attention, along with a sidebar displaying vital context like git branches and listening ports.

github.com

TLDR Dev · GitHub repository

FFF.NVIM

fff.nvim is a Neovim plugin that is a fast file finder, using a dedicated Rust backend for typo-resistant fuzzy search, live grep, Git status integration, and image previews.

github.com

TLDR InfoSec · GitHub repository

THE MIMIKATZ MISSING MANUAL

Carlos Perez (DarkOperator) has publicly released "The Mimikatz Missing Manual," a comprehensive guide originally developed as private training material with direct input from Mimikatz author Benjamin Delpy, covering Windows identity, Kerberos, and PKI research. The manual spans seven parts, including LSASS credential extraction, Kerberos ticket forgery, DCSync/DCShadow persistence, and DPAPI abuse, with guidance tailored for red teams, blue teams, and security researchers. Available as a GitHub Pages site, it emphasizes not just command references, but the underlying Windows Security Authority internals being manipulated.

github.com

TLDR InfoSec · GitHub repository

DATA-SHIELD IPV4 BLOCKLIST

The Data-Shield IPv4 Blocklist Community provides an official, curated registry of IPv4 addresses identified as malicious. Updated continuously, this resource offers vital threat intelligence to bolster your Firewall and WAF instances, delivering a robust, additional layer of security for your infrastructure.

github.com

TLDR Design · Tool

GENERATE STUDIO-QUALITY EXPLAINER VIDEOS

Lunair is the fastest way to add a video to your landing page. It's as easy as writing, and users have total creative control.

lunair.ai

TLDR Design · Tool

AI DESIGN AGENT FOR PRODUCT TEAMS

Figr is the first design agent that actually understands your product. Drop in context like industry benchmarks, user feedback, product flow, and design systems to get production-ready UX backed by real app patterns.

figr.design

TLDR Founders · Tool

BOOST.SPACE

Single source of truth database for automations and AI agents.

boost.space

TLDR Founders · Tool

LAYERS

AI marketing agents that analyze your product and run growth campaigns.

layers.com

TLDR Founders · Tool

CONWAY

Autonomous AI agent infrastructure layer.

web4.ai