I've made a moderate update to d8taplex, adding time series data sets from Canada, France and Japan in addition to those from the UK. The site now includes the ability to limit the search for time series data to data sets sources from specific countries.
With this new index, the site now contains 367, 189 time series from 20, 524 data sets found on 72 sites. Take a look at the directory linked off the home page for full details on the data available per site.
In a recent blog post covering a presentation at Web 2.0 Expo, Hjalmar Gislason indicates that only 14 of the 193 countries of the world have established any sort of open data. This list of 14 does not include France or Japan (according to the shaded map used to make this point). The data sets surfaced by d8taplex are discovered by crawling the web and establishes that official 'open data portals' are not required to bring data to the masses. In many cases, these open data sites are aggregators and normalizers of data - they are not themselves data generating agencies. Thus, an alternative to the current flavour of open data - requiring a government portal which aggregates data - is a stack of technologies capable of discovering and interpreting data in any form that it appears in be it HTML tables, spreadsheets, text files or even images.
Note that the new d8taplex index includes data from Canada's National Statistics Agency site, not the much maligned data.gc.ca site.