QualCoder - A very complete Free and Open Source Software (FOSS) Computer-Assisted Qualitative Data Analysis Software (CAQDAS) written in Python. It works with text, images, and multimedia such as audios and videos.
MAXQDA - a professional software for qualitative and mixed methods data analysis
ATLAS.ti - ATLAS.ti is a powerful workbench for the qualitative analysis of large bodies of textual, graphical, audio and video data. It offers a variety of sophisticated tools for accomplishing the tasks associated with any systematic approach to "soft" data.
SciMAT - SciMAT is an open source (GPLv3) software tool developed to perform a science mapping analysis under a longitudinal framework. SciMAT provides different modules that help the analyst to carry out the steps of a science mapping workflow.
Quirkos - Quirkos is a simple qualitative analysis software tool that helps to sort, manage and understand text data.
Taguette - A spin on the phrase "tag it!