Some software vendors offer free trials or subscription models that can provide access to their products legally for a limited time or on a recurring basis.

: Ability to create, edit, and convert PDF files to Microsoft Word, Excel, and image formats. OCR Technology

Nitro Pro does not offer a permanent free version; it is a paid product with trial options. For modern users, Nitro PDF Classic is available as a one-time purchase instead of a subscription. Core Features

Tools for creating fillable text fields and combo boxes.