The TallyJ core program is an "hta" application. This can run on any Windows computer simply by clicking on it. The first time you do, you may be asked to confirm whether it should be allowed to run.
This application has many functions:
enter ballots
setup Election Files
identify the type of election, names of tellers, etc.
merge election files
setup Community Files
add / remove people to the list
analyze the ballots and count the votes
determine who has been elected
identify tie break situations
print reports
a number of reports are included in the core app
custom reports can be added