Open Source: Found for free, Able to edit, use, add to, Able to modify, distribute for free, Free to use, Free to modify, Free upgrades, Usually a community of experts to help, You may need expert knowledge to use and install, May not be fully tested,May not be good quality, Closed Source (Proprietary ) : Software you need to pay for, , You cannot modify, share, add to it as it is copyrighted, The software will be fully developed, The software will include updates, The software will include good support from the company, You must pay for it! You may need to pay for support, It may not do exacty what you want (and you cannot edit it!),

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