Web Conglomerates

Facebook

External:

• WhatsApp (purchased for $22 billion in 2014)

Google

Organic:

• Gmail

External:

• YouTube (purchased for $1.65 billion in 2006)
• Blogger

Former:

• Sold: Motorola Mobility (purchased in 2011 for $12.5 billion; sold to Lenovo for $2.91 billion in 2014)
• Killed: Google Buzz (introduced in 2010; killed in 2011)

Microsoft

Organic:

• MSN

External:

• Outlook.com (purchased [as Hotmail] in 1997)
• Skype (purchased for $8.5 billion in 2011)

Former:

• Sold: MSNBC (entered joint venture in 1996; sold remaining stake in 2012)

Yahoo

Organic:

• Yahoo Mail
• Yahoo News
• Yahoo Sports

External:

• Flickr (purchased for about $25 million in 2005)
• Tumblr (purchased for $1.1 billion in 2013)
• Alibaba (minority stake)

Former:

• Killed: Geocities (purchased for $3.6 billion in 1999; killed in 2009)
• Killed: Yahoo 360 (killed in 2009)