SpaceSharp is a free, open-source disk space analyzer for Windows 10 and 11, inspired by SpaceMonger.

It scans a drive or a folder and draws it as a zoomable treemap: every folder is a frame, every file a box sized by the space it uses, so the big things stand out at a glance. NTFS drives are read straight from the file table, so a million files take seconds.

Insights shows space by type, places that are safe to clear, game libraries, developer leftovers and old downloads. A duplicate finder compares file contents, and an empty folder list skips anything a program needs. Every scan is saved and compared with the last, so you see what grew. A plain-words filter, 24 palettes, dark and light themes and 18 languages round it out.

Everything goes to the Recycle Bin, except folders too deep for Explorer, which it can remove for good. Portable and installable builds for 64-bit and 32-bit Windows, code-signed. MIT License, actively developed on GitHub.

Features

  • NTFS file table scan: a million files in seconds
  • Zoomable treemap of every file and folde
  • Filter in plain words, such as “videos over 500MB older than 1 year”
  • Insights: space by type, safe to clear, games, developer leftovers, old downloads
  • Duplicate finder that compares file contents
  • Empty folder cleanup that skips folders programs need
  • Every scan saved and compared: see what grew, shrank, appeared or vanished
  • Inspect any item: share, composition and age
  • Deletes folders too deep for Explorer to open
  • Safe deletion through the Windows Recycle Bin
  • Inspect window with share, composition and age for any item
  • 24 palettes, color-blind-safe ones included, plus your own
  • Dark and light themes with cushion shading and a live preview
  • 18 interface languages, right-to-left included
  • Portable, Setup and MSI builds for 64-bit and 32-bit Windows, code-signed
  • Free and open source under the MIT License, no telemetry, no account

Project Samples

Project Activity

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License

MIT License

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Additional Project Details

Operating Systems

Windows

Languages

Arabic, Danish, Dutch, English, French, German, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Russian, Spanish, Swedish, Turkish, Ukrainian

Intended Audience

Advanced End Users, End Users/Desktop, System Administrators

Programming Language

C#

Related Categories

C# Storage Software, C# PC Cleaners, C# Disk Space Analyzers

Registered

2026-09-25