20 free software favorites

Freeware applications and open source software that provide IT managers with great tools at no cost.
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Network managers have long turned to freeware applications and open source software to address pain points without breaking the bank. The applications offer quick fixes to management and security issues with no budget approval and often become core to IT toolboxes. Here we highlight 20 freeware and open source tools, some that are well established and others that are newcomers to the free software game. 
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