Gathers results from various search engines based on a query and ranks them based on the number of links they have in common & the order they appear in each engine.

npm install -g wresults

wresults [<searchEngine> [<searchEngine> ...]] <searchQuery>

For more information man wresults

var wresults = require('wresults');
wresults.all('NodeJS wresults GitHub').then(/* */);
wresults.google('NodeJS wresults GitHub').then(/* */);
wresults.ddg('NodeJS wresults GitHub').then(/* */);
// ...

I haven't imposed any restrictions (delays, etc). You will be temporarily banned on some search engines if you hit them too quickly.