- VMware – The King of bare metal virtualization
- Citrix – XenDesktop and XenApp
- Citrix Admin Docs – Direct Link to Citrix Admin Doc’s
- Proofpoint – Email Security Gateway, highly recommended.
- Microsoft Technet – If you use a Microsoft Product this is the place to start.
- MS Admin Tool Kit for Win 7 – Remote Server Administration Tools for Windows 7 with Service Pack 1 (SP1) to Manage MS Servers via MMC snap ins.
- mRemoteNG – Tabular Admin connection manager.
- Putty – SSH and telnet client, need I say more?
- ibeast.com Bandwidth Calculator – Simple yet useful web based Bandwidth Calculator, also useful for converting between various storage sizes ie KB to GB.
- Quest Activeroles cmdlets – Quest Active Directory cmdlets for PowerShell, adds a lot of useful functionality to Powershell. You have to look under trial software to find it now.
- Powergui for Powershell Scripting – Powergui is a Gui PowerShell editor for writing scripts, has a lot more features than the PowerShell ISE and its free.
- Netshot – Open source network tool backups configs and compares changes etc. Great free tool for network admins.
Blogs by other System Admins
- vNucleus.com – Former co-worker’s blog, sharp guy with a lot of knowledge to share. (He sold the domain, will update link when I get it)
- XDA Forums for Samsung Galaxy Note (AT&T Version)
- TheUnlockr.com – Android website dealing with how to root your phone.
- Sysadmin recommended readings on reddit thread.