I want an open source alternative to Wolfram Alpha that is like a QA system that:
has scientific functionality and geographic functionality just like Wolfram Alpha
Can provide informaation from various fileds like health, conversion, physics, general knowledge e.t.c similiar to Wolfram Alpha
Can process general questions like- 'What is the capital of Greece?', 'How old is Michio Kaku?', 'How many inches is 1 foot?','what was the weather yesterday in Miami?' e.t.c
can do mathematical calculations (like a computer algebra system)
The reason I want to find a Wolfram Alpha open source alternative is because I am interested in using a Wolfram Alpha-like system for one of my projects.
I am fine if I need to use multiple modules for each task. But I want it to be (hopefully) as diverse and effective as wolfram alpha.
I have found a Python module known as quepy. It can take in natural language and search DBpedia.org or Freebase (two common knowledgebases) for results.
Something like this would satisfy my first requirement.