We built Google Flu Trends as a complementary data source to the surveillance systems run by the CDC.

FORBES: How Accurate Is Google Flu Trends?

To create and maintain a database on water and the environment by use of official, validated national data complementary to the EUROWATERNET, related to transboundary water bodies (rivers, lakes and coastal waters).

UNESCO: UNITWIN

The confrontation of ideas at these workshops has definitively advanced the discipline to a level that archaeoseismological evidence is now considered as a complementary source of earthquake data in the whole range of approaches in earthquake science.

UNESCO: Tales set in Stone: learning from ancient earthquakes

Now that wide-area wireless network operators recognize Wi-Fi hotspots as complementary to their advanced packet-data networks, they will end up owning or leasing most of today's hotspots and will build out coverage.

FORBES: Will 2003 Be The Year Of The Hotspot?

Together with the complementary technology forces of social, mobile, the cloud, and unified communications, big data brings countless new opportunities for learning about customers and their wants and needs.

FORBES: The Biggest Big-Data Opportunities: How to Choose the Right One

ViaSat also offers design capabilities and a number of complementary products including monolithic microwave integrated circuits and modules, DVB-S2 satellite communication components, video data link systems, data acceleration and compression, and mobile satellite antenna systems.

ENGADGET: ViaSat-1 sends its first words through the stratosphere to cooing stateside relatives