Segment is the more common of the two in our index: it runs on 873 websites against 30 for Lytics, and 1 sites use both. Counts come from real scans, not vendor claims.
Lytics is a customer data platform built for marketing teams.
Segment is a customer data platform (CDP) that helps you collect, clean, and control your customer data.
1 site runs both Lytics and Segment. That is 3% of the sites using Lytics, the smaller of the two.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.