iPhoto Library Manager
Legacy Mac utility from Fat Cat Software for managing multiple iPhoto libraries, browsing them, and moving or merging photos between libraries.
What is iPhoto Library Manager?
iPhoto Library Manager is a legacy macOS utility published by Fat Cat Software for working with multiple Apple iPhoto libraries. It was designed for people who outgrew a single iPhoto library and needed better ways to split, browse, search, copy, merge, or reorganize photo collections. The app can track several libraries, create new ones, add existing libraries, and help move photos between them while preserving library-based organization. Its documentation also describes duplicate-finding and some repair or rebuild workflows for problematic libraries. Users most often encounter it on older Macs, during migration from iPhoto-era collections, or when handling archived photo libraries that predate the Photos app. Fat Cat Software now lists it as a legacy product that is no longer supported, so compatibility with modern macOS versions and newer photo workflows may be limited.
Key features
- Create and manage multiple iPhoto libraries from one interface
- Add existing iPhoto libraries and keep a tracked library list
- Browse and search photos across managed libraries
- Copy or move photos between separate iPhoto libraries
- Merge photo libraries for consolidation projects
- Find duplicate photos across libraries
- Create shortcuts or quick ways to open specific libraries
- Assist with some rebuild or recovery workflows for damaged libraries
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Safety overview
Status: Mostly safe
This is a legitimate legacy photo-management utility from Fat Cat Software, not generally known as malware. The main risk is operational rather than malicious: it works directly with photo libraries, so mistakes, interruptions, or incompatibility with newer systems can affect photo organization or metadata. Use extra care with original libraries and backups before making merges, moves, or rebuilds.
Recommendation: Keep it only if you still manage old iPhoto libraries or need access to legacy migration tools. If you no longer use iPhoto-era libraries, it is usually optional and can be removed after confirming you do not need its preferences or old workflow shortcuts. Review carefully before using it on modern macOS because the product is legacy and no longer supported.
Common paths
/Applications/iPhoto Library Manager.app
Preference paths
~/Library/Preferences/com.fatcatsoftware.iPhotoLibraryManager.plist
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