What are some alternatives?
Google Tag Manager - Google Tag Manager helps make tag management simple, easy and reliable by allowing marketers and webmasters to deploy website tags all in one place.
Evergage - Evergage's real time web personalization software can help you boost engagement, increase revenue and drive more conversions. Web personalization software that's easy to use.
Blue Triangle - Blue Triangle's analytics platform uncovers issues on your website measurably impacting your revenue and helps you fix them.
Kameleoon - A/B Testing and Web Personalization for Marketers
OpenX - Ad technology platform available as a hosted service or as an open source download.
Optimizely - A/B testing you'll actually use.