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.

VS

Optify
42 websites

Optify offers both free and paid options

http://www.optify.net/

Optify provides an indispensable demand generation solution for sophisticated B2B marketers. Optify helps you generate more high quality inbound leads, nurture more demand from your existing leads, and track the impact of all of your market...

Market Share by Top Websites

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

Websites Categories

1 Optify has better usage coverage in more websites categories. Including E-commerce & Shopping, Health, Heavy Industry & Engineering, Home & Garden and 6 other categories.

2 BTBuckets is leading in News & Media.

Geography

1 Optify is leading in most countries, including United States, Canada, Serbia, Bangladesh and 9 other countries.

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