System1
| Company type | Public | 
|---|---|
| NYSE:SST | |
| Industry | News media security Internet advertising | 
| Founded | 2013 | 
| Headquarters | United States  | 
| Key people | Michael Blend (CEO) Chuck Ursini (Co-founder) Brian Coppola (CPO) | 
| Products | Answers.com, HowStuffWorks, Info.com, Infospace, MapQuest, Startpage.com, Formerly: Waterfox | 
| Website | system1 | 
System1 is an American Internet advertising company. Formerly known as OpenMail, it was founded in 2013. It describes itself as operating a "Responsive Acquisition Marketing Platform", and cites privacy as one of its principal foci, although it has been criticized for its influence on privacy-focused properties, including search engine Startpage.com. It is headquartered in Marina del Rey, California.