Ranked in these QuestionsQuestion Ranking
Pro Can store any file type
File types containing text are indexed.
Pro Very flexible
An extensive feature set makes it easy to adapt to your work flow.
Sync between different macs and/or ios devices is fast, safe and easy. You can sync via iCloud, Dropbox, WebDAV or WiFi.
Pro Paperless office functions available in PRO Office version
Includes processing of scanned documents, OCR etc.
The OCR function is based on FineReader and is probably the best one on the market.
Pro Completely offline
Pro Full text search
Pro Webpage Clipper
A flexible web clipper can add contents of any web page to DevonThink.
Pro One-time purchase vs monthly subscription.
Con Only runs on Macs, iPoneOS, iPadOS & Web
It does not run on Windows, Android, and Linux.
Con Stores in a proprietary format
It stores the whole database in a proprietary file package, that you cannot easily access from another app or from the Finder. Considering you might be classifying a huge quantity of files there, it is quite problematic if you want to interact with this data from other applications.
Con Non free/libre (proprietary)
Con Costs US$79.95 for just the Personal version
One-time purchase instead of monthly subscription.
Con Very limited automation
While the marketing claims are about an intelligent document manager, it actually does not offer many automation features, such as automatic classification, tagging and renaming of the files. It's much more like an extended file explorer.