The best replacement for photoshop cs6 is elements.

The best alternatives to photoshop cs6 are rated as following:
★★★★★  elements
★★★  cs6 extended
★★★  lightroom
★★  photoshop elements 12
★★  lightroom 4
★  gimp 2.8
★  gimp
★  elements 11
★  lightroom 5
★  paint tool sai
★  aperture
★  photoshop cs6 extended
★  elements 12
★  photoshop 7
★  photoshop cc
★  extended
★  aperture 3
  student version

Your alternative for photoshop cs6 is not listed? Suggest!
Speaking about photoshop cs6, one probably shouldn't forget about 3d.

Other search terms related to photoshop cs6 and their ratings are:
★★★★★ 3d
You have in mind a companion for photoshop cs6 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of photoshop cs6 in all years. Click on graph for more.
photoshop cs6
elements
cs6 extended