Text mining, text processing and semantic network analysis tools 

Automap

ConText

VOSviewer

Chorus

Social network analysis tools and visualizers 

*ORA

UCINET

Gephi

Pajek

Mailing lists and Google groups

SemSocNet: a Google group of industry experts and academics who want to explore the boundaries of semantic network analysis and share resources.

SOCNET: The Social Networks Listserv

Corpora: Text corpora list

Other tools 

R & R Studio

Python

Semantria 

SentiStrength

Tableau

Misc

Google Trends

Google Books Ngram Viewer

SociLab - LinkedIn Network Visualization and Analysis

Netvizz v1.3: a tool that extracts data from different sections of the Facebook platform.

YouTube Data Tools: a collection of simple tools for extracting data from the YouTube platform.

Digital Methods Initiative: methods and tools for repurposing online devices and platforms (such as Twitter, Facebook and Google). 

Data sources

Talk of Europe: A dataset covering all plenary debates held in the European Parliament (EP) between July 1999 and January 2014, and biographical information about the members of parliament. 

SoNIA - Social Network Image Animator

SNAP - Stanford Network Analysis Project

Twitonomy

TwiNL - provides researchers and students the opportunity to search through Dutch tweets.

Web Lectures: 

Social Network Analysis in ORA  (20 November 2015)

Data and Networks  (13 november 2015)

Free Data Visualization Tools

Plotly: data viz, dashboards, and collaborative analysis.

Visualize Free: drag-and-drop designer for interactive visuals in HTML5.