Add virtual file storage, access control,
and security to your applications
Create and manage virtual filesystems in your Windows applications.
Track and control filesystem, registry, and process manager operations.
Create and embed secure, fully-functional filesystems anywhere.
Create and manage virtual disk drives backed by standalone datastores.
Solutions for Virtual Filesystems and OS Monitoring
Callback Technologies develops tools that simplify filesystem implementation and operating system request interception. Our products help you create virtual disks and custom storage solutions, implement on-the-fly encryption, restrict access, audit and control system activity, and more. Each product is a complete Software Development Kit (SDK) that includes components, drivers, demos, and a well-documented API.
Trusted by Leading Brands Worldwide
"I would like to give a big 'thank you' for the quality of the components and the fast support. Not only do I trust the components but I trust the company. My appreciation comes from having to deal with ..."- William E.
"I'd like to compliment you on your great service. I personally never experienced any company with such great support. I opened a support ticket and was amazed by the quick responses. Your technical sup..."- Arjan P.
"I must say that I am extremely happy that I purchased your library, largely because of the excellent support."- David F.
"Our experience with this product has been very good, especially in areas where the native Microsoft classes have not been of much help."- Joel P.
"This is a fantastic product, not only is it easy to use, but it's also extremely powerful. It allows you to focus on the business objective of your project rather than the, sometimes daunting, intricac..."- Rick M.
"I am recommending your company to every developer that asks me. You're really a wonderful example of how software companies should be. Fast, kind with customers, effective and prompt on bugfixes. GREAT!..."- Federiko S.
"Kudos to you for such a great product! My programmers like it enormously. We were able to plan and develop a complex storage and data management application within the allocated timeframe. Thank you for..."- Steve W.
"I used this for several applications already. You've implemented it very efficiently. Lots of smart ideas without sacrificing reliability. All this at very reasonable price. Thank you."- Rayan H.
"Our company had a contract to develop USDH-compliant encrypted storage for medical images like surgery footage. No doubt, CBFS Storage was the right choice. I would estimate that it reduced our developm..."- Henk De J.
"I bought your components because of convenient, easy to learn API, plus there is really no match (literally!) on the market. It provides neat functional capabilities. I will recommend it to all my peers..."- Andrew K.
"This is one of the best, easiest to use Delphi components we have ever seen. The documentation was amazing, the tech support impeccable, and the communication, unwavering.You have allowed our product to..."- Adrian G.
"With your component, I was able to implement my data recovery utility for Vista in just a few hours. Thank you for the great product!"- Miroslav S.
"After the release of Vista, we faced serious problems porting our proprietary low-level data analysis tool. Thanks to the creators of CBAccess! Problems are solved before the deadline and under budget. ..."- Michael B.
"I was looking for direct disk access SDK for some time. I'm glad I found you guys. Your component is easy and efficient. I completed my project unexpectedly fast and certainly will buy from you again."- Lisa W.
"We would be glad to recommend your product. It is very intuitive, easy and comfortable to use. The code and license were delivered just an hour after payment. Your support is efficient. Thanks a lot!"- David G.
"Our data need to be accessed quickly, but not exposed to other users or applications. On-the-fly encryption of data provided by your component came very handy. You've got a great product and nice team. ..."- Michael P.
"Our company needed an easy way to regulate data access on a low level. There is not much on the market, and your component helped us 100%. Thank you for providing an example that also helped us to accom..."- Devon H.
"We decided to purchase your product to implement continuous data protection for our data storage. Our developer was happy with the quality of the code, easy intuitive interface, and great support. The ..."- Al K.
"Trying to make a dozen virtual disks in distributed storage? Try your products or abandon the whole idea... Excellent well-designed and well-QAed SDK. Fast helpful support. Thanks guys!"- Carlos U.
"We tried your demos and modified them according to our requirements. As far as we have come with our testing, we were very pleased with the way your component works - compact easy installation, well-don..."- Stefan B.
"We needed functionality to pull our data from different places with restricted access from our application only. CBFS made this task a really easy one owing to the simplicity of API and fast responses w..."- Nuno Q.
"It works great. It only took me about 6 hours to get our prototype up and running. We are now deciding when to start this project."- Nathan S.
"It took us some time to find a component which makes possible integration of data from numerous sources in form of read-only files on a virtual disk. CBFS does it perfectly. We were able to implement ou..."- John S.
"The product your company designed is wonderful, truly one of a kind. When I found it on a Google search I was excited that I finally found something that would allow me to do what I wanted from the very..."- Eaton Z.
"The CBFS Connect SDK is easy to use. It has an intuitive API that doesn't take much time to learn. The learning is aided by a responsive support team. Thank you."- Carlos T.
"Kindly take my applause for the excellent CBFS Connect SDK. I implemented all functionalities of a virtual disk I needed in less than two days. And, wow, it’s fast!"- Amitha K.
"I am so used to Linux FUSE that working in Windows without it is difficult. CBFS quickly solved all my problems. Support was fast and helpful."- Aiguo L.
"They provided ample support when we prototyped our product using CBFS Connect for Delphi. The turnaround time on communication was the best we have ever seen. We would recommend them time and time again..."- Adrian G.
"Great product! And with all these updates and excellent support really makes me think its 100% worth the money."- Helge S.
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