Absolutely! This is a very primitive example using tools that should be readily available to everyone. I published a more advanced tutorial that uses NodeJS/GitHub/Sublime: https://steemit.com/javascript/@money-dreamer/nodejs-steemit-bot-tutorial

@jfollas created an excellent series using some of the more advanced technologies: https://steemit.com/steemdev/@jfollas/write-a-steemit-web-app-part-14-recap