You do not need software for qualitative analysis, but there are several tools you can use. A list of software for qualitiative analysis is available from ITAM (log in required). (ITAM - Information Technology Asset Management - is a software-sharing consortium for university units that choose to opt-in. For more information, or to request software, send an email to email@example.com)
The Library does not provide support for qualitative software like NVivo and Atlas.ti. Please use the tutorials linked above.