Gitter is an open-source instant messaging and chat room system tailored for developers to collaborate and join communities for their respective languages or projects like CSS, JavaScript, Bootstrap, NodeJS, etc.
Related Tools
Mattermost
Mattermost is an open-source Slack-alternative platform for secure collaboration across the entire software development lifecycle.
Snappify
Snappify is a code snippets tool that helps developers present, explain, and easily share their code.
Duckly
Duckly is a collaboration tool for development teams that enables you to talk and share your code in real-time with developers using any IDE.
1 
