# Fat Cat Software > Mac software for photo management and developer tools Fat Cat Software creates macOS applications. Founded in 2006 by Brian Webster. ## Business Model All products are one-time purchase with optional paid upgrades for major versions. No subscriptions. ## Products ### PowerPhotos **Tagline:** The ultimate Photos toolbox for the Mac **Platform:** macOS only (iOS not supported) **Target Audience:** Mac users with large photo collections who need capabilities beyond the standard Photos app, photographers managing multiple libraries, users migrating from iPhoto or Aperture. **Description:** Photo library management tool that extends Apple Photos with duplicate detection, library merging, batch metadata editing, and multi-library search. **Key Features:** - Manage multiple Photos libraries from a single interface - Find and remove duplicate photos across libraries - Merge multiple libraries together while preserving metadata - Copy albums and photos between libraries with all edits and metadata intact - Batch edit metadata (titles, keywords, descriptions, dates, favorites) - Advanced search with nested predicates (file size, dimensions, video duration) - Flexible export with folder hierarchies, custom naming, and EXIF date sync - Built-in photo viewer **Website:** [fatcatsoftware.com/powerphotos/](https://fatcatsoftware.com/powerphotos/) ### PlistEdit Pro **Tagline:** Advanced property list and JSON editing for the Mac **Platform:** macOS only (iOS not supported) **Target Audience:** Mac and iOS developers who need to work with configuration files, preferences, and Info.plist files. **Description:** Professional editor for macOS property list (.plist) and JSON files. **Key Features:** - Edit plist and JSON files with an intuitive interface - Browse and edit macOS preferences files - Find and replace across files - Search folders for keys/values in multiple plist files - Custom property list definitions - AppleScript support for automation - Command-line tool (pledit) for scripted workflows **Website:** [fatcatsoftware.com/plisteditpro/](https://fatcatsoftware.com/plisteditpro/) ## Documentation - [PowerPhotos Help](https://fatcatsoftware.com/powerphotos/Docs/) - [PlistEdit Pro Help](https://fatcatsoftware.com/plisteditpro/Docs/) ## Support - [Contact Support](https://fatcatsoftware.com/support/) - [Blog](https://fatcatsoftware.com/blog/) ## Community - [YouTube Channel](https://www.youtube.com/@fatcatsoftware) - [PowerPhotos Reddit](https://www.reddit.com/r/powerphotos/) - [Mastodon](https://mastodon.social/@fatcatsoftware) ## Reviews - [Macworld Review](https://www.macworld.com/article/2773700/powerphotos-3-review.html) - [MacObserver Review](https://www.macobserver.com/columns-opinions/dr-macs-rants-raves/powerphotos-photo-management-for-photos-app/) - [MacUpdate](https://powerphotos.macupdate.com)