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.
Upload or enter data and create attractive, interactive graphs. Publically share graphs and data with others. APIs available for Matlab, Python, and R.
For Windows, Mac, and Linux. Free and open-source software for creating diagrams and concept maps. It is more flexible/free-form than yEd, making it great for qualitative research or mind maps.
Draw flow charts, networks, and diagrams. Can add diagram labels (including Greek characters and mathematical symbols) using HTML. Diagrams can be exported in several raster and vector file formats.
A German site which supports text of any kind, audio, video, and image files. There is a plugin available to use with R, the open source statistical analysis software.
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.
Color suggestions specifically for map graphs. Can limit suggestions to only those that are colorblind-safe, print-safe, etc. Color codes can be given as hex, RGB, or CMYK.
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.
Windows, Mac, Linux. free software program that serves as an introduction to spatial data analysis. OpenGeoDa is the cross-platform, open source version
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.
