All in one web Searcher

All in one web searcher is a simple yet powerful extension to search multiple sites with ZERO click. Add sites to search, customize the order and search anywhere quickly.

Contrast Changer – Opera

Contrast changer is an extension to change the contrast of the webpage currently viewing to modes like "Invert" or Grayscale". Useful for reading webpages easily without eye strain and for focusing only on content.