Live plan - https://app.liveplan.com/promo?pm=FLAGSTAFF_SBDC_6 - Excellent software that ads features all the time for the plan to be part of business operations in the long run. We have an SBDC special that gives clients 6 months of access for $59.95.
StratPad - https://www.stratpad.com/ - Create an integrated free business plan and boost your business with our easy-to-use cloud-based business planning software. We are starting to use this with a number of clients.
SBA Build a Biz Plan - http://www.sba.gov/business-plan/1 - Free to use, has issues logging back into it and you will need to reset password frequently. Basic question and answer format. Financial section is confusing, the rest is fine.