Atlasi, was released in 1993 as a tool used for qualitative data analysis. Users can code or mark data sources and assign them to specific categories to be able to analyze how/when/how many times a topic is mentioned. The tool is available offline and users can run their own instances. It is an open-source tool. When using the tool, the data is uploaded into the software so it is stored wherever the suer choses to store it.
The tool can be used on paid basis.