Free trending service

[turnerja]

Perhaps this is wishful thinking but I would like to do the following.

- Test the load times of 50+ URLs, 4 times a day or more (6k+ hits a month)
- Ideally different browsers and different locations, but not necessary
- Trend each URLs overall load times, last 24 hours, last 7 days, last 30 days
- Aggregate load times across URLS
- FREE, not just a trial
- Willing to download results to Excel for trending if this isn't to manual of a process.

I have been testing http://www.neustar.biz but haven't been happy the performance results, not to mention it isn't free.

Any suggestions.