CodeTogether vs. JSFiddle vs. Python vs. Saros Comparison Chart

JSFiddle has the notion of panels (or tabs if you switch into the tabbed layout), there are 4 panels, 3 where you can enter code, and 1 to see the result: HTML - structure code, no need to add body doctype head, that's added automatically, CSS - styles. You can switch pre-pocessor to SCSS, JavaScript - behavior. There are many frameworks and code pre-processors you can use. Once you enter code, just hit "Run" in the top actions bar, and the fourth panel with results will appear. SFiddle allows you to switch the layout of the editor from the classic 2x2 grid to something that suits your needs. In addition to the grids mode it also has a tabbed mode. Grids are fully resizable. As an addition resizing the Results panel will tell you its width (handy for working on media queries).

An Integrated Development Environment (IDE) plugin that facilitates real-time collaborative editing for distributed software development teams. Compatible with Eclipse and IntelliJ IDEA, it enables multiple developers to work concurrently on shared projects, with each participant maintaining a local copy of the project synchronized in real time. Key features include support for multiple concurrent writers, a follow-mode to observe team members' navigation and editing activities, and awareness information displaying recent contributions and current selections of all participants. Saros supports sessions with up to five participants and allows users to host their own servers to keep all communication within their network. This design enhances collaborative coding experiences, making it suitable for scenarios such as pair programming, code reviews, and mentoring.