Are you using windows? Then you don’t need software. You can do that in the command prompt.
The command is literally called “sort”
Step by step tutorial:
Right click somewhere, select “Create New/text document”. Type or paste your list there. Save it. Right click the file, select properties and copy the location. F.i. “C/user/desktop/”
Press windows key. Type CMD. Open the the command prompt. Go to the place where the file is by typing "cd " and paste the location.