This page contains the link of some necessary tools which is very helpful for troubleshooting purpose.
Putty: PuTTY is an SSH and telnet client, developed originally by Simon Tatham for the Windows platform.
FileZilla: FileZilla Client is a free, open source FTP client. It supports FTP, SFTP, and FTPS (FTP over SSL/TLS). The client is available under many platforms, binaries for Windows, Linux and Mac OS X are provided.
Windows USB/DVD Download Tool: The Windows USB/DVD Download tool allows you to create a copy of your Windows 7/8 ISO file on a USB flash drive or a DVD.
7-Zip: 7-Zip is a very good free file archiver with a high-compression ratio.
Sysinternals: It is the must have tool for any sysadmin out there.
PsTools: This is a subset of Sysinternals, a tool that lets you view detailed information about processes, and the suite is continually growing.
Windows Server Update Services: Windows Server Update Services 3.0 Service Pack 2 (WSUS 3.0 SP2) delivers updates to corporate environments from Microsoft Update.
Microsoft File Server Migration Toolkit 1.2: The wizards in the File Server Migration Toolkit use Distributed File System (DFS) to maintain Universal Naming Convention (UNC) paths and to simplify the consolidation and migration process
RVTools: RVTools is a windows .NET 2.0 application which uses the VI SDK to display information about your virtual machines and ESX hosts.
VMVision Manager – A new way to view the virtual machines in your environment.
CPUID System Information – shows the VMHost CPU Info by NTPRO.
VMware CPU Host Info 2.01 – allow you to read out all CPU information from all your ESX Servers by querying your VC server. It will show what features are available on your CPUs and if they are compatible to vmotion VMs and if FT is supported.
Vizioncore vOptimizer WasteFinder – 3.0 – scans vCenter and can shrink VMDKs to reclaim storage and can also realign VMDKs to 64k on 2 VMs for free.
PHD Virtual Patch Downloader 126.96.36.199 – simplifies the task of downloading patches for various ESX and ESXi versions (including vSphere) by automating the task.
Loadstorm – utility to generate CPU and/or memory load within a virtual machine. Great for testing out DRS
vmClient – a lightweight tool which enables you to control the power of your virtual machines, it’s also capable of presenting the MKS console of your virtual machines.
vDisk Informer – demonstrates which virtual disks have potentially wasted space on them and which virtual disks are misaligned causing a performance impact
VMware Scanner 1.4 – scan for VMware Servers (ESX, ESXi, VirtualCenter and VMware Server). It uses the VMware API to identify a VMware server and query the product name, version and build number.
ESXi Customizer – automates the process of customizing the ESXi install-ISO with drivers that are not originally included
UBERAlign – free and powerful tool to resolve alignment of VMs
SolarWinds VM-to-Cloud Calculator – Discovers Virtual Machines & Estimates the Cost to Move to the Cloud
Documentation Downloader by Xtravirt – A practical and intelligent tool for offline access to VMware product documentation
sfvAlarms – A windows utility to allow the export and import of VMware vCenter Alarms
DoubleCloud Client – a wrapper around a Web browser so that the vSphere Web Client user experience is similar to a standalone C# application.
Foglight for Virtualization, Free Edition – virtualization freeware suite is comprised of six utilities that provide virtualization administrators with 360-degree visibility into heterogeneous virtualized environments (Snapshot Explorer, Storage Explorer, Change Explorer, Environment Explorer, vScope Explorer, SearchMyVM Explorer)
vOptimizer WasteFinder – quickly locate and reclaim over-allocated VM storage and dramatically reduce unnecessary storage costs
Virtual Mac Address management – Virtual Mac management tool that allows you easily to manage the MAC addresses of your virtual machine’s NICs. (not tested on latest vSphere releases)
JAM HeavyLoad – freeware stress test tool HeavyLoad. HeavyLoad puts your workstation or server PC under a heavy load and lets you test whether they will still run reliably.
PowerCLI GUI to edit VM hardware version 10 – A .NET like graphical user interface (GUI) in PowerCLI from which perform all operations for VM editing without using the vSphere Web Client
DBC-VMfinder – search for VMware virtual machines by name, MAC, or IP to retrieve their information. Page is in spanish, use google translation.
VMmark – Get an accurate measurement of application performance in virtualized environments with VMmark, the industry’s first virtualization benchmark for x86-based computers
vCenter Converter – of course we all know this appliance for easy P2V migrations
vSphere Management Assistant – allows administrators and developers to run scripts and agents to manage ESX/ESXi and vCenter Server systems.
PowerCLI – a powerful command line tool that lets you automate all aspects of vSphere management, including network, storage, VM, guest OS and more.
VMware Support Toolbar – have a direct way for all the necessary links, downloads, RSS feed news for all things from VMware. Compatible w/ Firefox, IE, and Safari
VMware SiteSurvey – Produces a report showing hardware compatibility and software configuration compatibility with advanced VMware features such as Fault Tolerance.
CPU Identification Utility – Displays CPU features for VMotion compatibility, EVC and indicates 64-bit VMware support.
VMware Studio – an integrated development tool that packages software applications into virtual appliances and vApps that are ready to run and optimized for VMware product platforms and the cloud.
VMware vCenter Update Manager 4.1 Sizing Estimator – get the right answer to your question whether to install the VMware vCenter Update Manager database on the same DB as vCenter DB or not. And also if yes or not to install VUM at the same host as the vCenter Server host
VMware Compliance Checker for vSphere – Check the compliance of your IT infrastructure against specific standards and best practices that are applicable for the environment
VMware vCenter Orchestrator Appliance – Begin automating your vSphere environment
Wavemaker – a rapid application development environment for building, maintaining and modernizing business-critical Web 2.0 applications
VMware Posters – VMware posters which were created by Technical Marketing and have been released at VMworld and VMUGs around the world