Pick two. The table shows their rating, their Openness score and the facts behind it, each from the vendor's own pages.
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Adobe Acrobat Reader lets anyone open, view, annotate, and sign PDF files for free across Windows, Mac, and mobile devices.
Adobe Acrobat includes an AI Assistant (in paid plans) that lets you ask questions about a PDF's content and get quick summaries, making it easier to pull key info from long documents without reading everything.
If your team just needs to open, read, and print PDFs, Adobe Acrobat Reader is the go-to free tool that works reliably on almost any device. The free version covers basic PDF viewing well, but you'll hit a wall fast if you need to edit, sign, or convert documents without paying for a higher-tier Adobe plan. It's a solid foundation, but most small businesses will eventually need more than the free version offers.
