Here are some common log furniture tools.
A draw knife has a sharp edge that is pulled along the length of a log. It is used for shaping and for peeling the bark off.
A log tenon cutter attaches to a power drill and is used to cut the male end of a log to be inserted into the mortise of another log. This tool is like a giant pencil sharpener.
A self feeding wood bit is used for drilling the mortise. Other wood bits will work but the self feeding drill bit, as the name suggests, feeds itself into the wood, making the job easier and more precise.