Collaborative spreadsheet program - new winning style of project/daily work planning and tracking

Spreadsheet model is a document created in spreadsheet programs to simulate or represent a real life situation. One of the best and widely-used spreadsheet programs is Microsoft Excel that can cover a lot of different purposes, for example if you use this spreadsheet program to draw up a price-list, it can act like a spreadsheet calculator where cells with inputted algorithms can operate with entered prices to show certain calculated results. Generally, the natural purpose of spreadsheet programs is drawing up of all kinds of different lists (checklists, to-do lists, estimates, registers, price-lists etc.) with possibility to input spreadsheet formula for additional calculations. Models created through spreadsheet calculator are often used in business to help with planning, accounting and forecasting. Actually, good example of spreadsheet model that can be created with a help of spreadsheet program is a project or arrangement estimate that will show you what is supposed to be done on that project, how much everything costs, and will help you to decide how this plan can be improved. Another similar spreadsheet example is work management spreadsheet model - to-do list of tasks specified with assignments, target dates, multiple task attributes and details.