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Dev tools · alternatives · 2026

24 alternatives to FCSpaceMap

An intuitive disk space analyzer that visualizes filesystems

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1

    GUI disk analyzers are great for figuring out what's filling up your laptop/desktop drive. On containers or remote servers, the options are limited to purely text based utilities (e.g. du) or list-centric TUIs (e.g. ncdu) which are usually limited to viewing one directory at a time. I created leaves to fill that gap. Inspired by classic utilities like WinDirStat and KDirStat, it uses a 2-dimensional treemap^1 visualization to show the entire directory hierarchy with proportionally sized rectangles. It's performant enough to handle millions of files, thanks to Rust and multi-threading.…

    Jul 2026 · github.com · its alternatives →

  2. 2

    Discover what’s taking up space on your Mac

    2019 · its alternatives →

  3. 3

    Analyze disk usage and free up disk space on your Mac

    2015 · daisydiskapp.com · its alternatives →

  4. 4

    Fast disk space analyzer with smart visualizations

    2020 · diskspacefan.com · its alternatives →

  5. 5

    free open-source disk space visualizer for Mac/Windows/linux

    Jun 2026 · github.com · its alternatives →

  6. 6

    TagSpaces is a free, open-source file organizer for Windows, macOS, Linux, and the web. Tag files and folders, take notes, and manage your digital life—100% offline, no login.

    2016 · tagspaces.org · its alternatives →

  7. 7
    Spacer▲97

    Tag-based File Explorer

    Nov 2025 · store.steampowered.com · its alternatives →

  8. 8

    See which apps are hammering your Mac's disk

    Jul 2026 · finddiskkiller.com · its alternatives →

  9. 9

    Disk space visualization and management tool for Mac

    2021 · daisydiskapp.com · its alternatives →

  10. 10

    Analyze disk space usage on your Mac

    2018 · nektony.com · its alternatives →

  11. 11

    Flexible tool to build planet-scale vector tilesets from OpenStreetMap data fast - onthegomap/planetiler

    2021 · github.com · its alternatives →

  12. 12

    "dut" is a disk usage calculator that I wrote a couple months ago in C. It is multi-threaded, making it one of the fastest such programs. It beats normal "du" in all cases, and beats all other similar programs when Linux's caches are warm (so, not on the first run). I wrote "dut" as a challenge to beat similar programs that I used a lot, namely pdu[1] and dust[2]. "dut" displays a tree of the biggest things under your current directory, and it also shows the size of hard-links under each directory as well. The hard-link tallying was inspired by ncdu[3], but I don't like how unintuitive the…

    2024 · codeberg.org · its alternatives →

  13. 13

    An interactive visualization of the universe

    2019 · neal.fun · its alternatives →

  14. 14
    Codespace▲254

    A beautiful cross-platform code snippet manager

    2020 · codespace.app · its alternatives →

  15. 15
    DuckDisk▲104

    Table-first storage analysis for Mac, cloud, and SSH

    Aug 2026 · github.com · its alternatives →

  16. 16

    Fast and open source disk usage analysis tool

    2023 · github.com · its alternatives →

  17. 17

    Visualise a git repository by diff activity. Contribute to jmforsythe/Git-Heat-Map development by creating an account on GitHub.

    2023 · github.com · its alternatives →

  18. 18VY

    2013 · mkolysh.scripts.mit.edu · its alternatives →

  19. 19
  20. 20

    A file manager with tagging and note-taking capabilities.

    2022 · tagspaces.org · its alternatives →

  21. 21

    🐚📊 Show off your most used shell commands. Contribute to irevenko/tsukae development by creating an account on GitHub.

    2021 · github.com · its alternatives →

  22. 22GT

    Visualizing Github in treemaps

    2014 · tomiaijo.github.io · its alternatives →

  23. 23
  24. 24

    Codemap visualizes any codebase as a graph for software engineers to quickly understand the code architecture. Supports Typescript, Python, Java, PHP, Ruby, Go (Golang), and Terraform.

    2020 · codemap.app · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →