Free Apache Open Office Software
Open Office is a free office software package for Mac and Windows. Open Office includes spreadsheet and document applications that are compatible with Microsoft Word and Excel files. The software is also compatible with AcaStat, StatCalc, and Clarity.
For Mac users, after downloading and double-clicking on the download file, a warning message with be displayed. To temporarily override the security block, use System Preferences/Security & Privacy to allow the installation of Open Office.
Download Link
http://www.openoffice.org
Using Open Office with AcaStat software
For best results, save AcaStat data files as comma delimited (csv). When opening in Open Office Spreadsheet, select comma delimited and remove other selections in the import screen.
If opening a tab delimited file, Open Office Spreadsheet will default to the Text Document application. Data copied from the Text Document application will copy and paste properly into AcaStat software applications.