IIIF WebGL / Canvas / DOM mobile-ready fast viewer powered by OpenLayers V3.
See full screen demo (and try it on mobile device):
http://klokantech.github.io/iiifviewer/
And examples of use: http://klokantech.github.io/iiifviewer/examples/
It implements the IIIF protocol - see http://iiif.io/.
Developed by Klokan Technologies GmbH for the clients who are using IIIF protocol for publishing maps. The IIIF protocol can be easily used in http://www.georeferencer.com/ service.
Klokan Technologies GmbH also developed and release an open-source image server for IIIF.
See: https://github.com/klokantech/iiifserver/ and the releases, https://github.com/klokantech/iiifserver/releases
