Reviewers describe Muse as a thoughtful, well-crafted space for organizing ideas, with nested boards, flexible canvases, and support for mixed content standing out most. Several say it helps them bring clarity and calm to complex work, from everyday thinking to large distributed-systems planning, and some value being able to use it offline. The tone is strongly positive, with design and interaction quality praised repeatedly. Criticism is limited but specific: users want better PDF annotation, plus additions like OCR, tags, shapes, and perhaps easier browser access.