iconseeker.com
The IconSeeker.com is icon search engine. It contents about 50000+ high quaility icons and each icon has PNG, ICO and ICNS formats.
vector.me
Vector.me features an extensive database of free vector graphics. It enables you to quickly find the vector files you need by browsing or search through the entire collection of more than 150,000 vectors.
LINK: http://pl.vector.me/
tineye.com
This reverse image search searches by image and find where that image appears online.
LINK: https://www.tineye.com/
facesaerch.com
Search for photos of people of a particular name.
picfindr.com
The tool is available in the browser application. PicFindr searches the web for stock photos that are completely free to use commercially. It is a web app that helps you search several stock image, public domain and photo community sites simultaneously.
LINK: https://picfinder.en.uptodown.com/android
everystockphoto.com
Search engine for freely licensed photos. You can view a photo’s license by clicking on the license icon, below and left of photos.
twicsy.com
Browse and search social pics. Search over 6,958,049,770 Twitter pics, millions posted every day. View top trends, popular pics, pics by user and more.
LINK: http://twicsy.com/
behold.cc
It searching 1,040,000 high quality images from Flickr.
LINK: http://behold.cc/
picsearch.com
It searches the web for images. An image search service with more than 3,000,000,000 pictures.
photopin.com
Photopin helps bloggers find photos for their blog and makes adding them to their post fast and easy.
Just search for any topic using the search box (e.g. „Kittens”, „Flowers”, etc.).
LINK: http://photopin.com/