callas pdfToolbox SDK vs Datalogics Adobe PDF Library

callas pdfToolbox SDK

Figure	callas pdfToolbox SDK	Datalogics Adobe PDF Library
Price from	—	$499.92/mo
Free plan	—	—
Free trial	Yes	Yes
Open source	—	—
Windows	Yes	Yes
macOS	Yes	Yes
Linux	Yes	Yes
API	Yes	Yes
Self-hosted	Yes	Yes
Plans published	1	1
Spec score · PDF SDKs	8.6 (#1)	8.6 (#2)
Founded	1995	1967
Headquarters	Berlin, Germany	Wilmington, Delaware, United States
Languages	The SDK provides native C and C++ libraries with Java and .NET wrappers and sample code.	Supported languages and frameworks are Adobe C++, Modern C++, .NET, .NET Framework, and Java.
Purpose	pdfToolbox SDK integrates PDF preflight, correction, and conversion into a developer’s own application.	Adobe PDF Library is a developer SDK for creating, converting, modifying, securing, and processing PDFs programmatically.
Security	callas says it uses vulnerability detection, HSTS and related security headers, TLS/SSL, and recommended site-hardening features to protect personal data.	Datalogics says Adobe PDF Library was independently audited by Prescient Security and that its SOC 2 Type 2 report is available upon request.
Trial	All pdfToolbox variants are available with a free 14-day trial.	The free trial provides full SDK access without feature restrictions and does not require a credit card; the page gives no fixed trial duration and says to contact support to extend it.

callas pdfToolbox SDK has no write-up on Specifiction yet; its figures are above.

Datalogics Adobe PDF Library has no write-up on Specifiction yet; its figures are above.