AD SelfService Plus (Password notification) Active Directory https://www.manageengine.com/products/self-service-password/free-password-expiry-notification-tool.html Free password expiration notification tool.
ADManager Plus Active Directory https://www.manageengine.com/products/ad-manager/ AD Management tool for bulk edits, reporting, and automation
Snappy Driver Installer Origin Driver Utility https://www.snappy-driver-installer.org/ Tools to install missing drivers or update old drivers.
Free File Sync File Utility https://www.freefilesync.org/ A great simple tool for syncing data between two or more sources
GoodSync File Utility https://www.goodsync.com/features A tool used to backup and sync data between sources
Robocopy File Utility https://technet.microsoft.com/en-us/library/cc733145(v=ws.11).aspx My favorite data migration tool.
Acronis Imaging Utility https://www.acronis.com/en-us/ My favorite disk imaging solution.
Emsisoft Emergency Kit Malware Removal Tool https://www.emsisoft.com/en/home/emergencykit/ A scanner that can be used without installation to scan and clean infected computers
Malwarebytes Malware Removal Tool https://www.malwarebytes.com/ Malware removal tool
Malwarebytes ADWCleaner Malware Removal Tool https://www.malwarebytes.com/adwcleaner/ Adware removal tool
Malwarebytes Junkware Removal Tool Malware Removal Tool https://www.malwarebytes.com/junkwareremovaltool/ Malware removal tool
Trend Micro Free Tools Malware Removal Tool https://www.trendmicro.com/en_us/forHome/products/free-tools.html?cm_mmc=VURL:free.antivirus.com-_-VURL-_-/us/index.html-_-1:1 Various free utilities to remove malware.
Ultra Virus Killer Malware Removal Tool http://www.carifred.com/uvk/ Great portable tools for malware remediation
Angry IP Scanner Network Utility http://angryip.org/ IP Scanner
iPerf3 Network Utility https://iperf.fr/ iPerf3 is a tool for active measurements of the maximum achievable bandwidth on IP networks.
Ipswitch's Free IT Tools Network Utility https://www.ipswitch.com/resources/free-network-monitoring-tools Collection of various useful IT tools and utilities
Power Admin Server Monitor Network Utility https://www.poweradmin.com/products/server-monitoring/ Powerful Network & Server Monitoring Software
Lansweeper Network Utility https://www.lansweeper.com/ One of my all-time favorites for inventory management
Microsoft Network Monitor Network Utility https://www.microsoft.com/en-us/download/details.aspx?id=4865 Great network monitoring tool
NEWT Professional Network Utility https://www.komodolabs.com/network-inventory/ Network discovery and inventory tool
NMAP Network Utility https://nmap.org/ Network discovery and security auditing
NTOP Network Utility http://www.ntop.org/products/traffic-analysis/ntop/ High-Speed Web-based Traffic Analysis and Flow Collection
SolarWinds Free IT Tools Network Utility http://www.solarwinds.com/free-tools Collection of various useful IT tools and utilities
Spiceworks Network Monitor Network Utility https://www.spiceworks.com/free-network-monitoring-management-software/ Free monitoring tool for smaller networks.
Wireshark Network Utility http://www.wireshark.org/ Network Protocol Analyzer
BitTitan's Migration Wiz Office 365 https://www.bittitan.com/automation/mailbox-migration/ Migration tool to migrate mailbox data to Office 365
Microsoft idFix Office 365 https://www.microsoft.com/en-us/download/details.aspx?id=36832 AD prep tool for Dirsync/Azure AD Connect with Office 365.
Instant Housecall Remote Access https://instanthousecall.com/ Remote access tool
LogMeIn Remote Access https://secure.logmein.com/home Remote access tool
Rhub (Turbomeeting) Remote Access http://www.rhubcom.com/v5/index.html Hardware used for hosting your own remote access solution. (No more subscriptions!)
Splashtop SOS Remote Access https://www.splashtop.com/sos Remote support made simple – Connect to your users’ Windows, Mac, and now iOS and Android devices with a simple session code
TeamViewer Remote Access https://www.teamviewer.com/ Remote access tool
Snort Security Utility https://www.snort.org/ Awesome and free IDS solution
Admin Assistant Tool by EventSentry Server Utility https://www.eventsentry.com/adminassistant  A toolset that will allow you to remotely manage any Windows-based system.
Netwrix Free Sysadmin Tools Server Utility https://www.netwrix.com/freeware_tools.html  Collection of free tools to monitor and audit Windows servers, SQL, Exchange, and more.
Atto Disk Benchmark Storage Utility https://www.atto.com/disk-benchmark/ Test Hard Drives, SSD Drives, HBAs, RAID Adapters & Storage Controllers
Crystal Disk Info Storage Utility http://crystalmark.info/software/CrystalDiskInfo/index-e.html HDD S.M.A.R.T analyzer
Crystal Disk Mark Storage Utility http://crystalmark.info/software/CrystalDiskMark/index-e.html Disk IO benchmarking tool
GPTgen Storage Utility http://vorboss.dl.sourceforge.net/project/gptgen/gptgen/v1.1/gptgen-1.1.zip Utility to convert MBR partitions to GPT without data loss.
Recuva Storage Utility https://www.piriform.com/recuva Data recovery tool
TreeSize Storage Utility http://www.jam-software.com/treesize_free/ NTFS File space viewer. Great for finding what is taking up disk space.
ServiceDesk Plus MSP Ticketing System https://www.manageengine.com/products/service-desk-msp/free-it-help-desk-msp.html Great free ticketing system. Paid support is very cheap if needed.
Fluke NetScout LinkSprinter 300 Tools http://enterprise.netscout.com/network-testing/linksprinter-network-tester (Awesome Tool )Network tester with WIFI capabilities and good reporting.
iFixit Pro Tech Toolkit Tools https://www.ifixit.com/Store/Parts/Pro-Tech-Toolkit/IF145-307-1 The de facto standard in IT tools
7-Zip Utility http://www.7-zip.org/download.html My Favorite data compression tool.
Active@ Boot Disk Utility http://www.lsoft.net/bootdisk.aspx (Not Free) My favorite boot disk utility. Includes Windows password recovery & KillDisk Pro
Active@ Kill Disk Pro Utility http://www.killdisk.com/killdisk-pro.htm (Not Free) My favorite data destruction solution with certificate output.
Active@ Password Changer Utility http://lsoft.net/pwch.aspx (Not Free) My favorite local admin password reset tool
Belarc Advisor Utility http://www.belarc.com/products_belarc_advisor Builds a detailed profile of your installed software and hardware, network inventory, any missing Microsoft hotfixes, anti-virus status, and security benchmarks, and displays the results in your Web browser
Chocolatey Utility https://chocolatey.org/ A tool to update third-party applications
FileZilla Utility https://filezilla-project.org/ Free FTP Client & Server
Log Parser Studio 2.0 Utility https://blogs.technet.microsoft.com/exchange/2013/06/17/log-parser-studio-2-0-is-now-available/ Awesome tool to analyze various logs files, including IIS
Ninite Utility https://ninite.com/ A tool to update third-party applications
Notepad++ Utility https://notepad-plus-plus.org/ My favorite text editor
Paint.net Utility https://www.getpaint.net/ Easy-to-use image editor
Putty Utility http://www.putty.org A client used for SSH, Telnet, and Serial connectivity.
Rufus Utility https://rufus.akeo.ie/ To make any iso boot from a USB flash drive.
VLC Utility https://www.videolan.org/vlc/index.html The best multimedia player
CPU-Z Utility https://www.cpuid.com/softwares/cpu-z.html CPU-Z is a freeware that gathers information on some of the main devices of your system
Foxit Reader Utility https://www.foxitsoftware.com/downloads/ My favorite PDF Reader
HWMonitor Utility https://www.cpuid.com/softwares/hwmonitor.html A hardware monitoring program that reads PC system's main health sensors: voltages, temperatures, and fans speed.
Memtest86 Utility https://www.memtest86.com/download.htm Memory testing utility
PowerShell Utility https://msdn.microsoft.com/en-us/powershell/mt173057.aspx CLI tool to automate Windows-based tasks.
Prime95 Utility https://www.mersenne.org/download/ Stress Test CPU and Memory. Recommend version 26.6
Message Header Analyzer Web Utility https://testconnectivity.microsoft.com/MHA/Pages/mha.aspx A resource to analyze email headers
Microsoft Remote Connectivity Analyzer Web Utility https://testconnectivity.microsoft.com/ Resource for checking various Outlook/Skype/Office365 Services.
MXtoolBox Web Utility http://mxtoolbox.com/ Resource for checking RBL's & MX, SPF, DKIM, and more DNS records
Speedtest.net Web Utility http://www.speedtest.net/ A tool to test WAN uploads & Downloads
CCleaner Windows Utility http://filehippo.com/download_ccleaner/ A great utility for cleaning up Windows system (Not recommended for servers)
D7II Windows Utility https://www.foolishit.com/d7ii Automated tools for PC repair
Fab's Autobackup 7 Pro Windows Utility https://www.fpnet.fr/ The time-saving tool when transferring Windows user profiles to another workstation
Hiren's Boot Disk Windows Utility https://www.hiren.info/pages/bootcd The classic do it all boot disk utility tools set.
Manage Engine Free Tools Windows Utility https://www.manageengine.com/free-tools.html A Collection of AD, Windows, Server, Exchange, and SQL tools.
O&O ShutUp10 Windows Utility https://www.oo-software.com/en/shutup10 Utility to disable Windows 10 telemetry
Program Switcher Windows Utility https://www.d7xtech.com/free-software/program-switcher/ Free utility to easily switch default apps
Revo Uninstaller Windows Utility https://www.revouninstaller.com/revo_uninstaller_free_download.html Windows Uninstaller utility to remove stubborn applications
Ultimate Book Disk Windows Utility http://www.ultimatebootcd.com/ Free do-it-all boot disk
Windows Repair Toolbox Windows Utility https://windows-repair-toolbox.com/ Collection of various useful IT tools, including malware removal utilities
Windows Sysinternals Windows Utility https://technet.microsoft.com/en-us/sysinternals/bb545021.aspx Collection of Windows Tools. My favorites are Process Explorer, Process Monitor, AutoRuns, PsTools, and TcpView.
Altaro Backup https://www.altaro.com/ Easy Solution for Backing up Virtual Machines and Office 365
Azure Site Recovery Backup and DR https://azure.microsoft.com/en-us/products/site-recovery Proven Solution for Disaster Recovery and Azure Migration
SQL Health Monitor SQL https://www.manageengine.com/sql-performance-monitor/sql-server-monitoring-index.html Free SQL Health Monitor