Full-featured byte-level patching system for reliable software updating. Innovative and reliable software update technologies.
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If you have a question regarding the operation of PatchFactory or DF SDK, please take a moment to review the most common Frequently Asked Questions (FAQs) and Support Forums. You may find there the answer you are looking for! If there is no answer do not hesitate to contact us. We'll help you and respond to your message as soon as possible - usually within 24 to 48 hours or two business days.
You can use our online email-form (shown below) to contact us. Just fill all necessary fields and click on "Send Email" button. Do not forget to select the appropriate Question Category for your message and write the detailed description of your problem - it can significantly shorten the respond time and provide us with your registration information (if you are a registered user of PatchFactory or DF SDK). Please, write your questions/comments/reports only in English (we do not guarantee an answer if you write it in another language)!
All comments and suggestions concerning improvements to our products and services are appreciated!

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Competitive Upgrade.
Buy now and save up to 50% of your total purchase for migration to PatchFactory or DF SDK.
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May 15th, 2008
PatchFactory v3.3.4 update is available.
» Details...

January 29th, 2007
PatchFactory v3.3.3 update is available for free download.
» Details...

December 25th, 2006
DF SDK v1.0.2.2 released.
Improved performance for diff applying engine.
» Download Free Demo...
» Details...

December 11th, 2006
DF SDK v1.0.2.1 released.
Improved performance for diff building engine.
» Download Free Demo...
» Details...

October 19th, 2006
DF SDK v1.0.2 released.
» Download Free Demo...
» Details...

October 10th, 2006
DF SDK v1.0.1 released. Software Development Kit which provides integrating of effective patching / differencing for files of any type and size into your application(s).
» Download Free Demo...
» Details...

Article: Creating Updates and Patches
"Certification Magazine" has published an article devoted to the main aspects of the software updating problem arisen during standard software development cycle.
» Details...
» Read article...

October 24th, 2005
new! PatchFactory v3 Flash-based Tutorial is available.
» View flash-tutorial...

October 4th, 2005
PatchFactory v3.3
released. New language modules for patch installation and improved performance of patch building engine!
» Download Evaluation...
» Details...

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