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Numi is a calculator that magically combines calculations with text, and allows you to freely share your computations.

MWeb is Pro Markdown writing, note taking and static blog generator App for Mac, iPad and iPhone. MWeb can handle professional-level markdown with support for markdown extensions. It provides publishing to various social networks and blogging formats, as well as various preview themes.

SpamSieve is a robust spam filter for major email clients that uses powerful Bayesian spam filtering. SpamSieve understands what your spam looks like in order to block it all, but also learns what your legitimate messages look like to avoid confusion. SpamSieve only marks spam in your email client so you never lose any mail.