People install VMware Tools because a video told them to, then cannot say what changed. This page is the honest inventory: every feature the tools genuinely deliver in an Ubuntu VM, the two features that come with fine print, and the popular expectations the tools will never meet - so you know exactly what you installed and why.
VMware Tools is not a performance booster and it is not optional polish either - it is the translator between Ubuntu and the VMware window around it. Without it the guest is a stranger: it cannot tell the host its IP address, cannot follow the window size, cannot share a clipboard. With it, the VM starts behaving like a well-integrated application. Here is the feature-by-feature truth, including the limits nobody mentions.
The most visible gift. Without tools, Ubuntu is locked to a short list of fixed resolutions - usually a small 800 by 600 or 1024 by 768 box floating in a bigger window. With the desktop package installed, the guest resolution becomes the window size: drag the corner and Ubuntu redraws to fit, go full screen and it fills the monitor exactly. This is the improvement the video demonstrates the moment the install finishes, and for most people it alone justifies the install.
Copy a command in your Windows browser, paste it straight into the Ubuntu terminal. Drag a PDF from the Windows desktop onto the Ubuntu desktop and it copies across. Text, images and ordinary files all travel. Two honest limits: very large files crawl - drag and drop is a convenience channel, not a bulk transfer tool, so use a shared folder or network copy for gigabytes - and on Ubuntu's default Wayland session drag and drop can be unreliable, a known quirk this series covers in the resolution troubleshooting guide, with the Xorg login session as the workaround.
Without tools, the pointer is captured by the VM and you press Ctrl + Alt to escape back to Windows - the classic beginner confusion of "my mouse is stuck in the black box". With tools, the pointer slides in and out of the window like any other application and moves smoothly instead of jumping. It sounds small; over a working day it is the difference between a VM you tolerate and a VM you forget is a VM.
Several benefits never appear on screen. The tools sync the guest clock with the host, which matters more than it sounds - a drifted VM clock breaks logins, certificates and scheduled jobs. They let VMware shut down or restart Ubuntu cleanly from the host menu instead of the equivalent of pulling the power cable. And they report the VM's IP address, hostname and heartbeat back to VMware, which on ESXi is how the host knows the guest is alive and healthy.
VMware's shared folders feature does ride on the tools: define a Windows folder in the VM settings and it appears inside Ubuntu under /mnt/hgfs. But be clear about the order of operations - installing the tools only makes the guest capable of seeing shared folders. You still have to enable sharing and pick the folder on the host side, per VM. Readers who install tools and then hunt Ubuntu for their Windows drive have usually skipped that host-side step.
Three expectations to retire. They do not add gaming graphics power - the tools include a virtual display driver for smooth desktop work, not a gaming GPU; heavy 3D stays limited by VMware's virtual hardware. They do not fix a starved VM - if Ubuntu is slow because it has 2 GB of RAM and one CPU core, tools change nothing; resources do. And they do not speed up a slow disk. Install them for integration, judge them on integration, and fix performance problems at the resource settings where they actually live.
See every one of these features switched on live in the video - the install takes under a minute, and the before-and-after is obvious.
▶️ Watch Full VideoNo. The tools run entirely inside your virtual machine and talk to the VMware software on your own computer or server - they are a local integration agent, not a cloud service. Nothing about your files is uploaded anywhere by open-vm-tools. Shared folders and clipboard only move data between your host and your guest, on your own machine, when you use them.
Not VMware's built-in shared folders - the guest side of that feature is part of the tools. Without tools you can still move files the ordinary network way, for example with a standard network share or scp between host and guest, since the VM has its own network connection. The tools simply make the VMware-native route and the drag-and-drop route exist.
Honestly, no. The tools provide the proper virtual display driver, which makes the desktop crisp, resizable and smooth for normal work, and VMware's 3D acceleration can handle light 3D. But a virtual GPU is not a gaming graphics card - demanding games and professional 3D workloads remain the weakest part of any VM, tools or not. That is a hardware reality, not an installation problem.