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ACT! is ranked 38th in CRM while Siebel Sales is ranked 22nd in CRM with 1 review. ACT! is rated 0.0, while Siebel Sales is rated 7.0. On the other hand, the top reviewer of Siebel Sales writes "CRM used for order management with many features built into the solution". ACT! is most compared with , whereas Siebel Sales is most compared with .
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