Instapage helps advertisers increase conversions by enabling the creation, personalization, and optimization of landing pages at scale.
Amplitude provides product analytics to help companies understand user behavior. Autopilot does all this, but better - dashboards, graphs, customer segmentation.
Most important, Autopilot shines as an alternative to Amplitude because you can take ACTION on your analysis: sending email campaigns, SMS, sending the right messages to customers at the right time.
Mixpanel is the most advanced analytics platform for mobile & web. Autopilot has graphing and analysis capabilities rivalling Mixpanel, and additionally allows you to segment your customer base and send email, SMS and in-app messaging campaigns to those segmented customers.