DBPedia has been providing machine-readable info drawn from Wikipedia infoboxes for a long time, and that's absolutely an open project. But there are drawbacks

DBPedia has been providing machine-readable info drawn from Wikipedia infoboxes for a long time, and that's absolutely an open project. But there are drawbacks to that approach, nowadays Wikipedia users are broadly expected to input that info into Wikidata (a language-independent project, providing its data under the CC0 license) and the Wikipedias are gradually moving towards fetching the information from there as well. The English Wikipedia is somewhat behind on that, so DBPedia might still be useful for parsing info from it.