SourceLair is an online IDE that lets you develop your web app in Django, Node.js, HTML5, and PHP, while it integrates with Git, GitHub and Heroku.
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Pro Django stack, out of the box
SourceLair provides a minimal Django stack which can be used to host projects and see development results right away. Plus, there's a public link that can be used to share with colleagues or team.
Pro Simple and efficient interface
SourceLair features a very efficient interface, containing only the tools needed, thus providing focus on what's important - code.
Pro GitHub integration
SourceLair lets you log in and sign up with your GitHub account. This enables you to clone your GitHub repos with a single click and start working immediately on them.
Pro Git & Mercurial support
Every software project on sourceLair is backed up by the Source Control Manager of your choice; Git or Mercurial. Clone repos, commit, pull and push changes and work with branches on the cloud without having to install and configure anything or worry about compatibility between your Source Control Manager and the system of your choice.
Pro PHP real-time preview
You can split you editor and watch the result of your code in real time.
SourceLair offers a free plan that allows you one private project. However if you want more projects, the Pro plan is fairly expensive at $8/month ($96/year).