# hkneptune/FreeFileSync

A Copy of FreeFileSync Source Code. This repository is just a mirror of the FreeFileSync source code. Please do not send pull requests. Submit issues to the official forum (https://freefilesync.org/forum/). Last free version for commercial use: https://github.com/hkneptune/FreeFileSync/releases/tag/v12.5

Repository: https://github.com/hkneptune/FreeFileSync
Canonical: https://ross.abutalabs.com/products/freefilesync
Homepage: https://www.freefilesync.org/
Language: C++
License: NOASSERTION
License Family: other
Last push: 2026-08-14T03:55:29+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 97, release rhythm 86, longevity 100
- inputs: {"age_days": 3122, "days_push": 19, "days_rel": 19, "gap_med": 44, "n_releases_24m": 14}
- flags: no_license, no_readme
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1619, forks 187 (observed 2026-08-28T04:05:12.167890+00:00)

## What it is
A mirror of the FreeFileSync source code, an open-source folder comparison and synchronization tool that creates and manages backup copies of files. It transfers only the minimal data needed by detecting differences between source and target folders.

## Use cases
- synchronize files between two folders
- back up important files incrementally
- mirror a directory to an external drive
- compare folder contents before copying
- schedule automated folder sync jobs
- sync files across Windows, macOS, and Linux

## When to choose
- you need fast incremental folder sync that copies only changed data
- you want a cross-platform GUI backup and synchronization tool
- you need one-way mirroring or two-way synchronization with conflict handling

## When to avoid
- you need cloud-native backup with versioned snapshots
- you require a permissive license for commercial use without purchasing the Business Edition
- you want to contribute code - this repo is a read-only mirror

## Facets
- artifact type: application
- maturity: active
- function: backup, file-system, compression
- domain: files, developer-tools, cross-platform
- platform: windows, cpp
- tags: file-synchronization, folder-comparison, mirror, source-mirror, macos, linux

## Member repositories
- hkneptune/FreeFileSync (main) score 94

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:12.167890+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:49:26.599835+00:00, confidence not recorded.
  - homepage: https://www.freefilesync.org/ (fetched 2026-08-29T11:22:07.375022+00:00, sha 8a32c5a24059)
  - site_page: https://freefilesync.org/faq.php (fetched 2026-08-29T11:22:07.386887+00:00, sha d4d0dfaf188a)
- Data as of 2026-08-30T08:39:29.467469+00:00.