AdRoll is a very nice tool for targeting ads.
Co-founder & CEO - Recruitee
We use AdRoll for retargeting ads.
Co-founder - Flarian
1%Stacklist Startups Are Using AdRoll
The AdRoll platform helps businesses in a wide range of industries use their customer data to execute high performance campaigns across platforms and devices that attract and convert customers.
Visit the website: https://www.adroll.com/