Text Visualization Tools
- Voyant and Voyant Tools Index
- Tagxedo
- HTML5 Word Cloud (seems to work better than Tagxedo)
- The Stanford Parser
- AntConc
Text Markup Tools
Spatial Visualization and Analysis
- MapsData Online Converter (previously Inquiron)
- CartoDB
- Cartogram Geoprocessing Tool version 2
- Google Earth
- WorldMap
- QGIS
Network Visualization and Analysis