Tradingster.com provides free COT charts and COT reports. The Commitments of Traders (COT) reports provide a breakdown of each Tuesday’s open interest for markets in which 20 or more traders hold positions equal to or above the reporting levels established by the CFTC.
The original COT report is text based and doesn’t include any charts or analytics tools. Tradingster provides you charts for COT report, which is great.