Resurf is a personal context library designed to help users save, organize, and search their notes, bookmarks, and files across Mac, iPhone, and iPad devices. The application operates entirely offline, ensuring that all data remains on the user's devices, with optional private iCloud sync for cross-device access. Resurf supports various content types, including notes, links, PDFs, images, audio, and video, all stored in a single, searchable library. Users can capture content from any app using global shortcuts on Mac or the share sheet on iPhone and iPad. The app offers features like quick capture, flexible organization with Spaces and tags, reading and annotation tools, and full-library search. Optional AI features allow users to summarize and query their saved content using their own OpenAI API key. Resurf is free to try on Mac with a limit of 50 captures and 4 spaces; a one-time purchase of $39 removes these limits and includes two years of updates, while a lifetime license is available for $79. The iPhone and iPad apps are free and unlimited, with no license required. Resurf is available for macOS 14.3+ on Mac and iOS 17+ on iPhone and iPad, with a Chrome extension for Mac users.