As titled, I'm finding for a software can be installed on my own server, to replace for google apps. I'm open to commercial solution, the point is I want to keep the data on my own server.
Any advice is appreciated
Okie doke. This is actually pretty challenging -- you're asking for online editing, which is very cloud-oriented, but using a private server. If all you wanted was file services, then you'd have a lot of options -- OwnCloud.org is a personal favorite, but there are a bunch.
If you really want to be able to edit online but save to a private server, SharePoint comes to mind first. Alfresco and its ilk are also out there, but that's enterprise-oriented. There are theoretically some ways to use OpenOffice programs in a browser (see also this) but I've never seen them in action.
Hope that gets you started. Good luck.