Google Custom Search Engine is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Google Custom Search Engine has better usage coverage in more websites categories. Including Business & Industry, Computer & Electronics, Shopping, Software and 178 other categories.
Ning is leading in People & Society, Arts & Entertainment, Religion & Spirituality, Music & Audio and 55 other categories.
Google Custom Search Engine is leading in most countries, including United States, India, Japan, Russia and 126 other countries.
Ning is leading in Brazil, Spain, Mexico, Indonesia and 61 other countries.