A browser-based graphing calculator tool. The interface is similar to Grapher for Mac. It is an easy-to-use, free alternative to expensive graphing calculators. There is also an app version of Demos for the iPad.
A browser-based tool designed to utilize keystrokes rather than the mouse as a coding assistant. CAT can import an ATLAS.ti project to parse quantitatively, though it has a coding mechanism built into itself as well. CAT won the Best Research Software award from the Information Technology & Politics in the American Political Science Association in 2008.
A free version of proprietary software for assisted qualitative analysis software. It can be used for the analysis of textual data such as interview and news transcripts, open-ended responses, etc. as well as for the analysis of still images.
Windows, Mac, Linux, and Android. Open Source Geographic Information System (GIS) licensed under the GNU General Public License. QGIS is an official project of the Open Source Geospatial Foundation (OSGeo). It supports numerous vector, raster, and database formats and functionalities.
free Geographic Information System (GIS) used for geospatial data management and analysis, image processing, graphics/maps production, spatial modeling, and visualization. GRASS is an official project of the Open Source Geospatial Foundation.