Stack Overflow posts are CC-licensed and all the data is available at <a href="https:&#x2F;&#x2F;archive.org&#x2F;details&#x2F;stackexchange" rel="nofollow">https:&#x2F;&#x2F;archive.org&#x2F;details&#x2F;stackexchange</a> - this is where Zest downloads it from.<p>Dash also provides SO search, though only in titles (no full text search).