This IDC Vendor Profile analyzes Lucid Imagination, which has emerged as one of the leaders in enterprise search based on an open source search technology. The company's solution compares favorably with such commercial solutions as those available from Autonomy, Exalead, and Google. Lucid Imagination has become the go-to resource for the most stable version of Lucene/Solr. The company's commercial product delivers advanced features such as faceting and provides options that some commercial search vendors do not offer. One good example is the fine-grained controls for performing hit boosting and relevance tuning. Some vendors like Google permit no licensee manipulation of the relevance settings. Others like Autonomy Intelligent Data Operating Layer (IDOL) provide some controls, but the core operation of IDOL is off limits for most licensees. Lucid Imagination delivers the open source search solution providing capabilities and support that compares favorably with leading commercial products.