llms.txt

# ProSync

Canonical repository: https://github.com/file-bricks/ProSync
Organization: file-bricks
Primary language: Python
UI stack: PySide6 desktop system-tray application
License: MIT

ProSync is an intelligent backup synchronization tool with built-in SQLite database protection. It runs as a Windows system-tray app and supports folder sync, file sync, scheduled backups, and batch operations.

Core behavior:

- Synchronizes folders and individual files in five configurable modes: mirror, update, two_way, one_way, index_only.
- Detects and protects SQLite databases automatically (WAL checkpoint before copy, WAL file exclusion).
- Supports scheduled backups with configurable intervals and a batch-sync queue for multiple connections.
- Exports redacted `prosync-profile-v1.json` for device companions and web PWA integration.
- Optionally launches ProFiler companion for indexing and search across synchronized files.

Privacy boundary:

- ProSync does not transmit any data. All sync operations run locally.
- `ProSync_config.json` with personal source/target paths is excluded from the repository.
- The tracked `ProSync_config.example.json` contains only an empty template structure.

Local verification:

```bash
python -m pytest -q
python -m compileall -q ProSyncStart_V3.1.py ProSyncReader.py prosync_utils.py
```

## Audience

- Windows users who need reliable, scheduled backup sync between local or network folders
- Developers and power users managing SQLite databases who need safe, consistent backups
- Privacy-conscious users who want a local-only sync tool with no cloud dependency
- Users of the file-bricks suite looking for ProFiler companion integration

## Search Phrases

- ProSync Windows backup synchronization PySide6
- local SQLite database backup sync tool
- Windows system tray folder sync scheduled backup
- WAL checkpoint SQLite safe copy Python
- file-bricks ProSync batch sync desktop app
- two-way folder synchronization Windows offline
- ProFiler companion file indexing sync

## Last-checked: 2026-06-11