CasualConc is a concordance program that runs natively on macOS 10.11 or later. The current version (2.0 or later) can generate Key Word in Context concordance lines, word clusters, collocation analysis, and word count. This program is only tested with English text just because that is the only language but technically, it should be able to handle any language macOS can. This new version (2.0) has visualization functions using the statistical environment R (needs to be installed separately). It works best with plain text files (.txt) encoded in ASCII or UTF-8, but can handle other file types and other encodings.  Reading non-plain text files will take more time to process.  PDF files should be text-embedded.