https://github.com/adnanh/rye - simple url-catcher on our slack channel (live at
http://rye.hajdarevic.net/) (Using slack outgoing webhooks +
https://github.com/adnanh/webhook for catching the webhook and running a simple shell script that parses the slack message and extracts all URLs and then hits rye with curl to store and crawl them)
https://github.com/adnanh/mikro - my personal micro blog that I mainly use to store interesting links (live at http://blog.hajdarevic.net/)
I'm currently working with a friend of mine on an MVP that we plan to offer as a service, and the source code is not open, but the stack is: React (JSX + ES6 + Webpack) + Tachyons for frontend, Ruby (Grape + Sequel) for frontend API, Golang for workers and processing, PostgreSQL as a DB and Redis for caching