Simple Spreadsheet can be run with Javascript, HTML and CSS. Generating charts is done with PHP. So if you don't need charts, you can work locally without a webserver.

Installation with a webserver:

• Download the latest version of Simple Groupware here.
• Extract the archive to a temporary folder.
• Copy the files from "src/ext/lib/simple_spreadsheet/" to your Apache webserver, make sure that PHP is running.
• Then copy "src/lib/artichow" to the spreadsheet directory on the webserver.
• Give write access to cache/.
  The cache is used for temporary storing cached charts.
  Feel free to empty this folder from time to time.
• Navigate with the browser to http://<your-server>/<your-spreadsheet-dir>/index.php

Installation without a webserver:

• Download the latest version here.
• Extract the archive to a program folder.
• Navigate with the browser to <program folder>/index_offline.html