I wrote a small summary of the areas of technology where we're adding innovations to the topic of team communication or chat based communication. Check it out and let me know if you have further questions, I'd be happy to answer! Cheerio, Leo (ChatGrape.com)
Frontend: component (https://github.com/componentjs/component) with a lot of custom components, no frameworks.
Using https://codeship.io/ for continuos integration/delivery
Stefan (ChatGrape)