Xcode Project Editor on Chrome. Supports adding and removing source code files without opening project in Xcode. Works offline.
If you are looking for a tool that can edit Xcode project file without opening Xcode, please try this Xcode Project Editor.
This editor allows you to open a Xcode project file and add or remove source code files. For now, it only supports adding .cpp, .c .mm, .m and .h files.
Will add more features to this editor. Let me know what you want this editor to support.