Academic institutions and government agencies were among the early adopters of open source search. Although it continues to make headway in commercial organizations, the enterprise has embraced software that comes with a support insurance policy and built-in upgrades. Commercial search software ranges from a black box, such as the Google Search Appliance or HP's Autonomy IDOL solution, to a set of LEGO blocks, such as IBM's or Microsoft's solutions. With more than 100 vendors offering commercial enterprise search solutions, there are myriad approaches, options, and systems from which to choose.
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