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What operating systems do you need to support? &nbsp;How many machines?
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You can use the combination of WSUS and LUP(Local Updates Publisher)<br />
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WSUS for microsoft products<br />
LUP for third party products<br />
<br />
<br />
Install and configure WSUS 3.0 SP2 – Step-By-Step<br />
<a href="http://araihan.wordpress.com/2009/08/13/install-and-configure-wsus-3-0-sp2-step-by-step/" rel="ugc">http://araihan.wordpress.com/2009/08/13/install-and-configure-wsus-3-0-sp2-step-by-step/</a><br />
<br />
Local Update Publisher (What is it?)<br />
<a href="http://www.localupdatepublisher.com/" rel="ugc">http://www.localupdatepublisher.com/</a><br />
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How to use<br />
<a href="http://sourceforge.net/apps/mediawiki/localupdatepubl/index.php?title=Main_Page" rel="ugc">http://sourceforge.net/apps/mediawiki/localupdatepubl/index.php?title=Main_Page</a>
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Forgot to mention that both are completely FREE
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try free edition of manageengine desktop central patch management software<br />
<br />
<a href="http://www.manageengine.com/products/desktop-central/patch_management_supported_application.html" rel="ugc">http://www.manageengine.com/products/desktop-central/patch_management_supported_application.html</a><br />
<br />
<a href="http://www.manageengine.com/products/desktop-central/windows-patch-management.html" rel="ugc">http://www.manageengine.com/products/desktop-central/windows-patch-management.html</a><br />
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thanks<br />
Mathi
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manageengine is a 30 day trial, not free
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Note:The download is common for free and trial editions. It will first install as a trial edition without any restriction for 30 days. After the trial period expires, it automatically gets converted to a free version, which can only manage up to <b>25 computers. </b><br />
<br />
OP has 30
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Trying these out will report back. 
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<div class="content wysiwyg-content">
I am looking for open-source or low cost software that will allow me to centralize patch management and push it out to machines. Not just windows, but other applications such as Adobe, Firefox, Chrome, and etc. 
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I am looking for open-source or low cost software that will allow me to centralize patch management and push it out to machines. Not just windows, but other applications such as Adobe, Firefox, Chrome, and etc. 

Patch Management Software

Network analysis is the process of identifying and remediating the processes and systems within a network, including performance, connectivity and security. The process is performed through the use of tools developed for monitoring and analyzing network activity. Network problems that involve finding an optimal way of doing something are studied under the name combinatorial optimization. Examples include network flow, shortest path problem, transport problem, transshipment problem, location problem, matching problem, assignment problem, packing problem, routing problem, Critical Path Analysis and PERT (Program Evaluation & Review Technique).

Network Analysis

System Utilities are a type of system software used to support the computer infrastructure, distinguishing it from application software which is aimed at directly performing tasks that benefit ordinary users. Commonly used utilities include password managers, disk managers, system monitors, data synchronization tools, security and antivirus software and editors.

System Utilities

Network Operations includes asset management, help-desk supervision, security and user policies, infrastructure administration and anything else that affects the operation of your network. Discussions will include those of best practices in platforms, configurations, performance, security and accounting.