NVivo

Researchers import text, audio, video, and PDFs, then tag passages with codes and look for themes. Queries, matrices, and visual maps help compare groups and cases. Newer versions include AI-assisted coding and summaries, which researchers should still check.

Social scientists, health researchers, and market researchers use it for projects with many sources. It is expensive for individuals, though universities often hold site licenses.

ATLAS.ti and MAXQDA are close alternatives. NVivo suits researchers who need an organized system for large qualitative projects.