Arbor: graph visualization library using web workers and jQuery

Bokeh is a Python interactive visualization library for large datasets that natively uses the latest web technologies. Its goal is to provide elegant, concise construction of novel graphics in the style of Protovis/D3, while delivering high-performance interactivity over large data to thin clients.

CartoDB: open-source or freemium hosting for geospatial databases with powerful front-end editing capabilities and a robust API

Chart.js: open source HTML5 Charts visualizations

Crossfilter: JavaScript library for exploring large multivariate datasets in the browser. Works well with dc.js and d3.js

Cubism: JavaScript library for time series visualization

Cytoscape: JavaScript library for visualizing complex networks

D3.js: javaScript library for diagram generation. D3 visualization learnings, this website has D3.js Tutorials, D3.js Screencasts and a D3.js Newsletter

DC.js: Dimensional charting built to work natively with crossfilter rendered using d3.js. Excellent for connecting charts/additional metadata to hover events in D3

Envisionjs: dynamic HTML5 visualization

Freeboard: pen source real-time dashboard builder for IOT and other web mashups

Gephi: An award-winning open-source platform for visualizing and manipulating large graphs and network connections

Google Charts: simple charting API

Grafana: graphite dashboard frontend, editor and graph composer

Graphite: scalable Realtime Graphing

Highcharts: simple and flexible charting API

IPython: provides a rich architecture for interactive computing

Keylines: toolkit for visualizing the networks in your data

Matplotlib: plotting with Python

NVD3: chart components for d3.js

Peity: Progressive SVG bar, line and pie charts

Plot.ly: Easy-to-use web service that allows for rapid creation of complex charts, from heatmaps to histograms. Upload data to create and style charts with Plotly online spreadsheet. Fork others plots.

Recline: simple but powerful library for building data applications in pure Javascript and HTML

Redash: open-source platform to query and visualize data

Seaborn: statistical data visualization. Seaborn is a Python visualization library based on matplotlib. It provides a high-level interface for drawing attractive statistical graphics.

Sigma.js: JavaScript library dedicated to graph drawing

Square Cubism.js: D3 plugin for visualizing time series. Use Cubism to construct better realtime dashboards, pulling data from Graphite, Cube and other sources

Twitter Ambrose is a platform for visualization and real-time monitoring of MapReduce data workflows. It presents a global view of all the map-reduce jobs derived from your workflow after planning and optimization. As jobs are submitted for execution on your Hadoop cluster, Ambrose updates its visualization to reflect the latest job status.

Vega: a visualization grammar

Datavisualization.ch Selected Tools is a collection of tools that we, the people behind Datavisualization.ch, work with on a daily basis and recommend warmly. This is not a list of everything out there, but instead a thoughtfully curated selection of our favourite tools that will make your life easier creating meaningful and beautiful data visualizations.