pdfToolbox
Opens in new tabSeamless OEM integration for advanced PDF solutions
callas technology integrates seamlessly into standalone apps and web environments, with flexible technical and commercial solutions. Direct access to developers ensures quick rollout and top-tier support.

Embedded OEM technology
callas software spent 30 years developing the fastest, most flexible, and high-quality technology around PDF so you can integrate it in your solutions. Make your products more powerful while reducing time to market…
Meet the team
You’re using our technology, or you’re interested in doing so. Visit us at these events to meet the people behind the technology.
pdfCamp '25 - Fall
About callas
callas software is based in Berlin, Germany. The company was founded in 1995 and, from the very start, focused on creating best-in-class solutions for PDF workflows. As a technology innovator, callas develops and markets PDF technology for print production, document exchange, archival, and accessibility.

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Let’s talk integration
Nothing works better than a personal conversation. callas treats every OEM as a strategic partner. We’re focused on making your technology better, so reach out and introduce yourself.