Download Twitter timelines

The twitter API limits you to pulling the most recent 3200 tweets... so if you roll your own keep this in mind.

Also there a number of Twitter archive services out there that let you download a copy of your timeline. Remember that they too are limited to the 3200 by the API.

I happen to own/run one such service (http://tweetsaver.com). We'll get your most recent 3200 tweets from your timeline, plus all your mentions, DMs and favorites. We allow you to export these as a CSV file.

However, if all you want to do is download the tweets, my service is probably not the best option.

Two options immediately come to mind: an API call (never used Twitter's API, but API's generally tend to be fairly easy to work around, though you'd have to write up some sort of script) or pull the data off the timeline's RSS feed.