[andrepd]

Embedding wolframalpha is probably overkill, when all you need is simply a small arithmetic expression parser and to understand expressions like "next month" or "2 days ago", which even tools like GNU date support.

[throwaway2037]

Hat tip that you mention GNU date. I am surprised each time I use that feature and it manages to produce the date that I wanted.

[bmitc]

For dates, probably, but I was more curious about other natural language use cases.