Bizplan - Modern business planning for startups
Prospero - Professional Business Proposals
Cuttles.io - Develop your idea, write your plan & build your startup
SuperOkay - Delightful briefs, proposals, and estimates
Liveplan - LivePlan helps entrepreneurs and small-to-medium size business owners build dynamic business plans and track performance against their goals.
Bonsai Proposals - Automated & beautiful proposals for creative freelancers