Qiqqa - Qiqqa is a free research and reference management software. It can be used in many organizational projects from the academic to the personal to the business endeavor. Read more about Qiqqa.

MAXQDA - a professional software for qualitative and mixed methods data analysis

NVivo - Buy NVivo now for flexible solutions to meet your specific research and data analysis needs. 

Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.

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.

Google Scholar - Google Scholar is a freely accessible web search engine that indexes the full text of scholarly...