# WizTree Application: Antibody Software Also called wiz tree, diskanalyzer wiztree Antibody Software, System A fast NTFS disk map that reads the master file table. The 64-bit process is WizTree64.exe. It is not TreeSize. ## What you need to know WizTree reads the NTFS MFT. TreeSize is JAM's paid scanner. Antibody Software WizTree maps disk use by reading the NTFS master file table. Get it from diskanalyzer.com. It is not TreeSize and it is not the slower classic WinDirStat walk. - **What is it?**: A fast NTFS disk map **Same as TreeSize?**: No. Different vendor and method **Why is it fast?**: It reads the NTFS MFT Feex says If the disk is NTFS and you want the map now, I would open WizTree before I wait on a full WinDirStat walk. I would still not call it TreeSize. ## What is WizTree? WizTree is a disk-space treemap that reads the NTFS MFT. WizTree64.exe is the usual Windows build. TreeSize is JAM's product. WinDirStat walks folders the classic way. ## If you have never used it If a drive is full and you want a fast map on NTFS, WizTree is Antibody Software's MFT reader. Download it from diskanalyzer.com. It draws a treemap after reading the master file table, which is why it feels quicker than a folder walk. It is not TreeSize, not WinDirStat, and not Everything. ## What is it used for? **Find the huge files fast on NTFS** The MFT read is why the first map appears quickly. TreeSize and WinDirStat usually walk directories instead. **Treemap and file list** Click a block to see the folder. That visual is closer to WinDirStat than to TreeSize's paid report windows. **Personal versus business license** Antibody documents a free personal license and a paid business license. JAM's SKUs are a different shop. ## Who is it for? - People whose C: filled up this afternoon - Home users who want a free NTFS map - Shops that must buy the business license Antibody documents ## Current status WizTree (2016) is a current disk space analyzer from Antibody Software. The vendor still points Windows users at https://www.diskanalyzer.com/download. ## How old is it? WizTree launched in 2016. It is new next to TreeSize (1996) and WinDirStat (2003). The speed story is the NTFS MFT, not a 1990s JAM license. ## Versions Major channels first. Exact build numbers are not all verified here. Installer Portable ## System requirements Values follow the publisher's public guidance. Workload still changes the real need. ### Minimum | Operating system | Windows 10 or Windows 11, per Antibody Software's current download | | ---------------- | ------------------------------------------------------------------ | | RAM | Enough for Windows plus this app. Heavy projects want more. | ## Resource profile - **CPU demand**: A short spike while the MFT is read **RAM demand**: Follows how many files the volume has ## Installed processes These executables belong to this product when it is installed. | WizTree64.exe | 64-bit disk map | | ------------- | ----------------------------------- | | WizTree.exe | 32-bit build name on some downloads | ## Startup components WizTree should not start with Windows. A Startup shortcut is something you added. ## File locations | Typical install | C:\Program Files\WizTree\\ | | --------------- | -------------------------- | ## File formats It reads the file system. Exports vary by version ## Common problems ### People expect MFT speed on a network share The MFT shortcut is local NTFS. A UNC path falls back to a slower walk, like other scanners. ### Business use on the free build Read Antibody's license. TreeSize Professional is a different paid product if you needed JAM support. ## Getting unstuck ### Download from diskanalyzer.com A "WizTree Pro key" page is not Antibody. TreeSize lives at jam-software.com if that is what you meant. ### Run as administrator if the MFT read is denied Reading the master file table needs permission. That is WizTree, not a TreeSize license screen. ### Use WinDirStat if you wanted the classic slow treemap on a non-NTFS volume WizTree's fast path is NTFS. Other file systems do not get the same MFT trick. ## Alternatives TreeSize for JAM reports. WinDirStat for a classic free walk. Everything finds names, not folder sizes. ## Official help and downloads Start with the vendor. Random exe sites are not a support channel. | Download | [www.diskanalyzer.com/download ](https://www.diskanalyzer.com/download)Official installer or vendor page | | ------------- | -------------------------------------------------------------------------------------------------------- | | Help | [www.diskanalyzer.com/faq ](https://www.diskanalyzer.com/faq)Vendor support | | Official site | [www.diskanalyzer.com/ ](https://www.diskanalyzer.com/)Start here, not a random exe host | ## Related hardware Local NTFS on a fast disk makes the MFT read feel instant. The tool does not need a discrete GPU. ## Technical details Technical details Vendor version numbers change. This article does not pin a build. ## Related These entities connect to this article. Type is shown on every link. [WinDirStat: Application](https://feex.it/wiki/software/windirstat)[TreeSize: Application](https://feex.it/wiki/software/treesize)[How to read Task Manager: Guide](https://feex.it/wiki/software/system/how-to-read-task-manager) ## Sources and verification Reviewed by Feex editorial. Last verified August 2026 Status: Feex Reviewed. [How we research](https://feex.it/wiki/research). - [WizTree official site ](https://www.diskanalyzer.com/)· Vendor product page - [WizTree help ](https://www.diskanalyzer.com/faq)· Vendor support - [WizTree ](https://www.diskanalyzer.com/)· What Antibody Software ships - [Foxhole process map ](https://foxhole.feex.it/)· First-party samples on Windows PCs. Not a lab benchmark. ## Was this article useful? A yes or no is enough. Pick a reason if you want, or add a short note. Quick facts The short identity of this page. Specs, sources, and the full story stay in the article. - **Developer**: Antibody Software **Category**: Disk space analyzer **Process**: WizTree64.exe **License**: Free for personal use. Paid for business **First released**: 2016 **Official site**: [diskanalyzer.com](https://www.diskanalyzer.com/) **Mapped by Feex**: Seen on Windows PCs in Foxhole Feex Reviewed: Last verified August 2026 --- Source: [Canonical Feex Wiki page](https://feex.it/wiki/software/wiztree/) [Developer guide](https://feex.it/wiki/developers/) | [API policy](https://feex.it/developers/api-policy/) | [Agent guidance](https://feex.it/wiki/llms.txt)