I have always had a keen interest in alternative operating systems, since high school. I used BeOS as my primary operating system for two years, until Be Inc declared bankruptcy, and switched to Linux as the alternative. I achieved my Linux+ certification in 2004.
At Clixar, all our services were hosted on Linux servers. This included all servers reserved for development-related activities, including the
staging server, production server, and intranet server - which hosted the following services: Subversion, CruiseControl, Redmine, and
SugarCRM. All servers were operating using Ubuntu Server 7.10.
At RapidMind, the infrastructure was a heterogeneous environment with computers running different Linux distributions, Mac OS X, and Windows XP. The mail and collaboration server was Exchange. I supported and assisted with research, a solution to provide all client computers access to the Exchange server. For Linux workstations, the Exchange-Brutus connection was used. Mac OS X users used Entourage, and Windows users used Microsoft Outlook.
At Home Fashion Market, I migrated the entire network infrastructure from a Windows Small Business Server 2003 to Novell SuSE Linux Enterprise Server 10, as the
SBS server had reached maximum capacity. A Windows primary domain controller was simulated on Linux using Samba, and OpenLDAP was used as an alternative to Active Directory. The mail server was migrated from Exchange Server 2003 to Scalix, a collaboration server based on open source software. Microsoft Office was replaced with OpenOffice. All locations other than Head Office were converted to Linux thin clients using 2X ThinClientServer. The savings were dramatic and the solution was incredibly stable and reliable.
On my own, I have been strongly keen in evaluating Mac OS X Server. With iCal Server, and no licensing costs, this looks like a very attractive option for heterogenous environments.