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Thanks for asking! I wrote a blog post about it: http://blog.close.io/the-tech-stack-behind-close-io-sales-communication http://blog.close.io/the-tech-stack-be

• notastartup 13y ago
  Wow thanks for the answer! Where do you host the backend? I think Flask is a great choice, it is easier to deal with than writing a backend in Node.js.