Free PDF viewer with annotation, signing, and form-filling capabilities.

PDF reader with integrated note-taking and highlighting tools.

Dictionary and translator app with support for multiple services including Apple Dictionary, Google, DeepL, and OCR.

Free, open-source RSS feed reader for Mac, iPhone, and iPad with syncing support.

E-reader software for viewing EPUB and other ebook formats on macOS.

View and analyze DICOM medical images from CT, MRI, X-ray, and other diagnostic imaging modalities.

Native macOS markdown viewer with QuickLook integration and Mermaid diagram support.

Open-source ebook reader supporting EPUB and PDF with cross-platform sync, highlights, and text-to-speech.

Read and manage EPUB e-books with support for DRM-protected content and accessibility features.

Save articles and web content to a unified library for highlighting, annotation, and spaced-repetition review.

Comic book and manga reader with library management and metadata support.