OCSU
Local-first Windows file organizer

Take back control of your files.

Recovered thousands of files—or inherited years of messy backups? OCSU maps them locally, surfaces the unique files you may have forgotten, identifies byte-identical duplicates and creates a clean copy without touching the originals.

See Early Access How it works
No cloud uploads SHA–256 exact matching Originals stay untouched
OCSU V0.3.14 · Verification complete
Done in one local pass Windows
11,321 source files checked
8,625 unique contents
2,696 exact extra copies found
0 original files changed
Local-only File contents never leave your computer.
Built for trust

Inspect first. Copy only what you need.

OCSU separates verification from copying, so you can understand the collection before creating a safer, cleaner output.

01

No cloud

Scanning, hashing, filtering and copying happen on your own PC. Your file content is never uploaded.

02

Read-only source

The source is never deleted, renamed or moved. OCSU writes only to the destination you choose.

03

Exact evidence

SHA–256 identifies byte-identical content. OCSU does not guess whether two files are the same.

Simple by design

From chaos to a usable collection.

01

Select a folder

Choose recovered files, an old drive or a mixed backup.

02

Verify

OCSU inventories and hashes the files locally.

03

Review

Search, filter and inspect unique files and exact duplicates.

04

Choose the output

Select all suitable files or only the rows you need.

05

Copy safely

Create a new collection while the source remains untouched.

Archive comparison

Compare collections before you copy.

Place an older backup and a newer collection inside the selected source. OCSU inventories them in one local pass, separates byte-identical duplicates from unique content, and lets you choose what should be copied to a separate destination. The originals stay unchanged.

Human logic. Your rules.

Modo identifying an exact duplicate
The application

See OCSU in action.

A real screenshot of the OCSU 0.3.12 English interface after a scan. Results can be searched and filtered by outcome and file type.

OCSU 0.3.12 English interface showing unique files and identical copies after a scan
The English interface with sample files: unique files and identical copies. Click to open the full-size image.
A real-world result

Thousands of files, one clear picture.

In one real collection, OCSU identified 2,696 byte-identical extra copies among 11,321 source files. This is a reference case, not a universal speed guarantee.

Files checked 11,321
Unique contents 8,625
Exact extra copies 2,696
Current release

Focused tools for a difficult job.

  • Recursive file inventory
  • Streaming SHA–256 verification
  • Exact duplicate groups
  • Overlooked unique files surfaced across drives and backups
  • Fast search by file name and path
  • Filters by result and file type
  • Copy only selected results
  • Original folder structure preserved
  • Collision-safe destination handling
  • Light and dark interface
  • 15 interface languages: English, Hungarian, German, Polish, Romanian, Czech, Slovak, Ukrainian, Croatian, Slovenian, French, Swedish, Norwegian Bokmål, Danish and Finnish
  • Optional work-session saving
  • Verification report export
Early Access

Try the real workflow. Upgrade only when you need more.

One application, two modes. OCSU Free 0.3.12 is available now. OCSU Full can be purchased securely through Stripe; after verified payment, the licence and download link are emailed automatically.

OCSU Free

HUF 0

Evaluate the complete workflow on a meaningful collection.

  • Up to 1,000 files
  • Verification, filtering and copying
  • All 15 interface languages
Download OCSU Free 0.3.12 Windows 64-bit installer · SHA-256: AF194A67…B55ABE6 · Windows may show a warning because the installer is not yet code-signed.

OCSU Full · Founders Edition

HUF 7,000 one-time

No subscription. No file-count limit.

  • Unlimited file collections
  • All current OCSU features
  • Early Access updates
Buy OCSU Full securely HUF 7,000 base price, plus any tax shown before payment. Immediate delivery is automatic; if you choose the 14-day option, delivery is scheduled accordingly.

A real problem. A clear method.

OCSU began with a request that sounded simple: sort it out. But being organised means different things to different people. Working through the resulting file chaos led to a practical method: inventory first, identify identical content, then create a verified copy in a separate destination. The originals stay in place.

The current release

OCSU 0.3.12 keeps the original files unchanged, supports 15 interface languages, includes clear history removal, improved feedback flow, file-type filtering and the Modo mascot.

FAQ

Clear answers before you trust it with your files.

Does OCSU modify or delete my original files?

No. The source folder is read-only from the workflow’s perspective. OCSU creates copies only inside the separate destination you select.

Are my files uploaded anywhere?

No. File verification and SHA–256 calculation run locally. OCSU V0.3.12 does not upload file contents and does not use generative AI.

What is an exact duplicate?

Files whose bytes produce the same complete SHA–256 fingerprint. It is content evidence, not a filename or visual similarity guess.

Can OCSU help me find a file when I no longer remember where I saved it?

Yes—if the file is present in one of the folders or drives you select. OCSU inventories the collection and lets you search names and paths while distinguishing unique files from exact duplicate copies. It does not recover deleted files.

Does OCSU recover deleted files?

No. OCSU works with files that are already present—for example, after a separate data-recovery process.

What does Early Access mean?

The current release is usable and available today. Early Access means OCSU is still being actively improved; the Founders Edition includes the current features and Early Access updates described in the purchase terms.

Does verification require internet access?

No. Verification and signed licence validation run locally. Internet is only needed to open the purchase and download pages; your files and their contents remain local.

Your originals deserve a safer workflow.

OCSU Free 0.3.12 is available for Windows now.

View release options