Stirling PDF is an open-source platform for editing and managing PDFs, offering desktop, browser, and self-hosted server options.
Could replace Adobe Acrobat Pro
95.1k stars
+33 a day
MIT
Free alternatives to Adobe Acrobat Pro
2 open-source tools that do some or all of what Adobe Acrobat Pro does. Check the features you rely on before switching.
Adobe Acrobat Pro starts at £19.97 a month (individual, annual plan billed monthly, incl. VAT; source, checked 2026-10-26)
OmniTools is a self-hosted web app offering a variety of online tools for everyday tasks, including image, video, and PDF manipulation, text formatting, and math calculations.
Could replace Adobe Acrobat Pro
10.4k stars
+1 a day
MIT