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NetBeans is a nightmare to keep synchronised across multiple machines. I store my ~/.netbeans folder on a WebDAV (network drive) which I can access from multiple Apple machines. However, this (obviously) breaks if the project file structure is not the same on all machines meaning that it won't work for Linux or Windows machines. It also demands that exactly the same version of netbeans, and modules be loaded on all machines. Additionally, this setup has other flaws including the shear quantity of config files that NetBeans writes to disk (not counting the var directory, which I keep local). It would be optimal if NetBeans could store all of its configuration in a single file, or at the very least only store non-default settings to disk. This would dramatically reduce the number of config files that are written to disk and simplify the issue of keeping several machines in sync. Alternatively... if the NetBeans team could come up with a more portable system for synchronising configs, that would be great.
I hope your requirements are fulfilled by implementing issue 42157. It allows to export/import options between users. If you use java projects, you can utilize shared libraries feature. Also you can store your projects in some of versioning control systems and easily share them with colleagues. Also you can install the NetBeans IDE on a network drive and share this installation. It depends on exact nature of your work. *** This issue has been marked as a duplicate of 42157 ***