| Software | Legally free? | Key features | |----------|---------------|----------------| | | Yes (free) | View, comment, fill forms, sign | | PDF24 Creator | Yes (free) | Create, edit, merge, compress PDFs | | LibreOffice Draw | Yes (open source) | Edit PDFs, export PDFs | | Foxit PDF Editor (free tier) | Yes | Basic editing and form filling | | Sejda PDF (web) | Free with limits | Edit, sign, convert PDFs |