In terms of features, NeoOffice (donations accepted) is huge, truly a viable alternative to Microsoft office. It includes all the basic components: Writer, the Word processing component; Calc, for spreadsheets; Impress, the presentation module; draw, for the creation of graphics and diagrams; and Base, the database component. The spreadsheet component has some sophisticated features like Advanced DataPilot technology, Natural language formulas, an Intelligent Sum Button and a comprehensive range of advanced spreadsheet functions.
Angel Investors are typically much better investors for a long-term business plan that Venture Capitalists, although they do not come usually with the incredible network to help you succeed. Venture Capitalists are more interested in themselves and making money on their investment then what you get out of it or the future of the business with you in it. An angel investor is interested in you, the future of the business and the possibility of making a whole lot of money on their investment. Please consider all this when presenting your business plan to an Angel Investor.