[gnulinux]

It's not about performance. I have no problem with jupyter notebook. I use ein-mode in emacs which is basically a better frontend for jupyter notebook AND you get all benefits of emacs since cells are individual emacs buffers. It's also not about browsers. Writing code in a medium that's not designed to write code encourages bad behavior. Jupyter notebook is supposed to be optimized for Julia, Python and R but somehow writing Python code is next to impossible because it doesn't understand what to do with indentation. There is almost no word suggestion, when I type a few characters and click tab I almost always get horrible suggestion and have to navigate with arrow keys. I cannot use C-q to comment stuff out/in intelligently (comment-dwim), I cannot use regex, I cannot fuzzy search, I cannot use multiple cursors, I cannot use replace-text, I cannot highlight SQL embedded in python. I can go on for days. And this is not a problem of jupyter notebook. Why reinvent the wheel? We already have text editors and IDEs that solve the problem of inputing code, why would you ever want to type code in a web input box? That is, unless someone spends more money and makes a full-fledged IDE in local javascript. So much wasted effort for a problem that was solved in 1960s.