AdInsight Clarity
1 websites

AdInsight Clarity offers both free and paid options

http://www.responsetap.com/

The system saves visitor information so it can report on every keyword that generates telephone enquiries. This way you are able to get complete accuracy with your call tracking and drive further improvements to your ROI

VS

BTBuckets
2 websites

BTBuckets is free to use

http://btbuckets.com/

BTBuckets is a free segmentation and targeting web application that allows sites to create user clusters based on their behavior.

Market Share by Top Websites

2 In terms of market share, AdInsight Clarity is clearly lagging behind, losing to BTBuckets in all segments.

Websites Categories

1 BTBuckets has better usage coverage in more websites categories. Including News & Media.

2 AdInsight Clarity hasn't got a lead over BTBuckets in any websites category.

Geography

1 AdInsight Clarity is leading in most countries, including United Kingdom.

2 BTBuckets hasn't got a lead over AdInsight Clarity in any country.