These are sub-urls of those already posted but maybe handy none-the-less.

Litecoin mining calculators:

• https://www.litecoinpool.org/calc
• http://litecoinminingcalculator.com/
• http://ltc.kattare.com/calc.php

Mining hardware comparison:

• https://github.com/litecoin-project/litecoin/wiki/Mining-hardware-comparison

Mining pool comparison:

• https://github.com/litecoin-project/litecoin/wiki/Comparison-of-mining-pools