Best Best List aims to answer "what product should I buy?" in a similar way that Rotten Tomatoes answers "what should I watch?" i.e. by summarizing the opinions of lots of other critics/websites.
It automates the process of googling "best [whatever]," pulling up some review sites & cross-checking with Amazon reviews.
This notification preview tool was developed by the OneSignal team to provide an easy to use and accurate preview of how notifications look across iOS, Android, and web push platforms. In addition to supporting text and title, it also helps preview rich notification capabilities of iOS 10+ and Android O.