GSMArena - GSMArena is an online site that offers exhaustive and up and coming cell phone data.
AlternativeTo - AlternativeTo lets you find apps and software for Windows, Mac, Linux, iPhone, iPad, Android, Android Tablets, Web Apps, Online, Windows Tablets and more by recommending alternatives to apps you already know.
Kimovil - Compare price, specs, reviews and benchmarks for smartphones and tablets.
SimilarSites - Easily find more sites like those you like.
NanoReview - Most advanced CPU and SoC comparison
Product Hunt - A website that lets users share and discover new products