TweetDumpr
bradkellett.com/experiments/tweetdumpr
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
This is a hideous tool that can be used to export your entire Twitter timeline to a CSV file, readable by any spreadsheet application (Excel, Numbers, etc.). Exported data includes the tweet plus a timestamp of when it was sent.