A Happy Search for developers.
https://harish81.github.io/happy-search
Happy Search is simple tool for searching information, resource over sites, it basically apply site filter so you will only related information.
For example - you got error in your project and you want to search
on stackoverflow then just select stackoverflow and search or want to search gist on github.
Note: I have developed this tool for my use-case, any suggestion or ideas to improve happy search are Most welcome.