both lean & six sigma works towards continuous improvements and process stability. Lean strategy focus on waste elimination. and Sixsigma focuses on to reduce Variation. Accordingly : lean we have tools such as 5S ( Related to work space ) , Kaizen System ,fool proofing ,cellular manufacturing system. SixSigma : we have FMEA,Fishbone diagram ,5 why ,etc. Some of the tools are used common in both SIxSigma and Lean depending on the requirement (for eg FMEA , Brainstorming , 5 Why Analysis is used for Problem solving).