For a long time, Adobe Acrobat was the only comprehensive PDF-making tool, but a host of programs now Nitro PDF. We prefer Acrobat, but if its tiered pricing places it beyond your budget, check out Nitro for quick, cheap PDF creation.
Design pros should still spring for Acrobat Professional. Watch for a challenge to the PDF standard when Microsoft releases the Metro file format within Longhorn next year.
| Nitro PDF | Adobe Acrobat 7.0 Standard | |
| Operating system | Windows | Windows, Mac |
| Create and edit PDFs | Yes | Yes |
| Use stamps and watermarks | Yes | Yes |
| Add digital signatures, encrypt files | Yes | Yes |
| Design forms and edit JavaScript | Yes | No |
| Loupe magnifier tool | Yes | No |
| Setup and interface | Good | Excellent |
| Features | Very good | Excellent |
| Service and support | Average | Very good |
 | Nitro PDF Desktop To create cross-platform documents for the Web, Nitro PDF is a back-to-basics alternative to Adobe Acrobat. Read full review |
 | Adobe Acrobat 7.0 Adobe Acrobat 7.0 brings new collaboration and usability features, some of which workgroups will find invaluable. Read full review |
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