Salesforce is the most popular cloud CRM with a focus on sales and support.
SELECT strftime('%d', o."CloseDate") 'Day', SUM(case when (strftime('%Y-%m', o."CloseDate") = '2015-05') then ifnull(o."Amount",0) else 0 end) 'Amount (Prev Month)', SUM(case when (strftime('%Y-%m', o."CloseDate") = '2015-06') then ifnull(o."Amount",0) else 0 end) 'Amount (Current Month)' FROM "Opportunity" o WHERE o."IsClosed"=true AND o."IsWon"=true AND o."CloseDate">='2015-05-01' and o."CloseDate"<='2015-06-30' GROUP BY strftime('%d', o."CloseDate")