DiskSense

Windows Storage settings gives you a few categories and a big lump of “Other”. DiskSense shows you exactly what’s filling your drives: which folder, which app, which file moved, and what’s safe to review first.

What it does

Every drive at a glance: exact folder and file sizes, biggest first, with a “what to review next” list.

What each app really uses: install + app data + cache added up. A “3 GB” app can turn out to be 58 GB.

Duplicates across all drives: the same file in two places, found by content.

File history: 90 days of renames, moves and deletes. Search a file’s old name to find it under its new one.

Instant search: its own index finds any file before you finish typing.

Ask your AI: a built-in MCP server lets Claude, ChatGPT, Cursor and others answer “why is my drive full?” They see names, sizes and dates, never file contents.

Read-only by design. DiskSense never deletes anything. It shows you what’s there, and you decide what goes.

For Windows 10 and 11. Free 3-day trial.