MAXQDA - a professional software for qualitative and mixed methods data analysis
Froged - One click solution providing easy-to-use marketing, sales and support services to turn website visitors into happy customers.
NVivo - Buy NVivo now for flexible solutions to meet your specific research and data analysis needs.
Keep Your Friends Close - A free e-book about maximizing Customer Lifetime Value
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.
Intercom on Customer Engagement - A book on how to create messages that drive engagement