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Work · September 10, 2015

Daisy Disk 4.0

Analyze disk usage and free up disk space on your Mac

Daisy Disk 4.0 launched on September 10, 2015 with 366 votes, #25 of 3,463 launches that month and more than 99% of that year's launches. The site was still online in September 2026, 11 years on.

In plain words

Daisy Disk 4.0 is a macOS application that helps users understand and manage their disk storage. It visualizes how disk space is being used across files and folders, making it easy to identify what's taking up the most room. The tool allows users to find and delete unnecessary files to free up storage space. It's designed for Mac owners who want to optimize their computer's performance and reclaim disk capacity.

written from the facts on this page · September 2026

From the sources

Get a visual breakdown of your disk space in form of an interactive map, reveal the biggest space wasters, and remove them with a simple drag and drop.

Find out what’s taking up your disk space and recover it in the most efficient and easy way. So you think disk cleanup is a chore? Think again. The minimalist design and thought-out interactions of DaisyDisk turn it into an easy and fun experience. Scan your disk in seconds, not minutes. No more waiting — get results almost immediately. Ever wondered why some of your disk space is missing without an obvious reason? Track it down with the power of scanning as administrator. Internal or external, SSD or HDD, USB or Thunderbolt, local or network, physical or virtual, diverse file systems — you get them all. In addition, now you can connect cloud storage. View all your…from daisydiskapp.com

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    Built this after repeatedly running into “Disk is full” on macOS with no clear explanation. Started as a cleanup tool for dev environments (Xcode, Docker, node_modules), but the harder problem turned out to be understanding what’s actually taking space. macOS groups a lot of this into “System Data”, which isn’t very actionable. Recently, local AI tools made this worse. Model files and caches (Ollama, Hugging Face, Whisper, etc.) grow silently and are spread across different locations. The goal is to make disk usage more transparent before deciding what to remove. Would appreciate feedback,…

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Launched alongside, September 2015

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