We take care of the details for you.

Adaptive Planning is a robust, open source software product for budgeting and forecasting.   Build models specifically for salary planning, capital budgeting, and other specialized purposes.  Create formulas that can't be over-ridden accidentally. Consolidate with confidence.  Never budget with awkward, error-prone spreadsheets again.  Adaptive Planning is everything a system for budgeting and forecasting should be. 
Editions include the Express Community edition (free) and the Enterprise Edition. Deployment options include SAAS, Cloud, and self-hosted deployments.