It's been nearly two years since Windows 7 was released, and yet there are still some features that Windows 7 users may not be taking full advantage of -- such as desktop gadgets. Similar to the Mac's Dashboard Widgets, Windows desktop gadgets are mini-applications that reside on your desktop and can display live data, perform simple functions like search or password generation, or give you a sneak peek inside the inner workings of your PC.
Each new Windows 7 system ships with a handful of gadgets that show dynamic data such as the time, the weather and current news headlines, but there are more than 5,000 gadgets available that run the gamut from the frivolous to the essential. A few come from Microsoft, but the vast majority were written by third-party developers, and most work with both Windows 7 and Vista. All are available for download at Microsoft's Windows Live Gallery.
There are gadgets for gaming, monitoring online auctions, keeping up with email or social media, playing music, encrypting files, and even showing the phase of the moon. More important, though, gadgets can be extremely useful for system monitoring.
In the following pages, I've gathered a dozen handy gadgets that display data about key computer operations: networking, system resources, component status, battery level and more.
While these gadgets sometimes duplicate functions provided by built-in Windows tools, what sets them apart is that they're always on the desktop in easy view. Together, they provide a wealth of information about how your computer is operating in an at-a-glance format.
The best of them go a step further by linking to key system software. For instance, with the Network Meter gadget, it takes one click to refresh the PC's IP address, saving the half-minute of clicking it normally takes to manually refresh the connection.
Like other Windows gadgets, these system monitors are small (from 26KB to around 2MB) and have a highly focused scope. Most take less than a minute to download and install and don't adversely affect the system's performance.
The best part is that they are all free for the download -- a great way to add to your system without subtracting from your wallet.
With Windows 7 having something like 15GB of software code, figuring out what's going on inside a PC is no easy task. The SysInfo and System Control A1 gadgets provide a valuable peek.
By default, SysInfo appears as a small icon that doesn't show any data, but click on the icon and a huge panel displaying system information in a wide variety of categories pops up. On top of things like operating system details and the capacity utilization of the processor, there's data on the computer's drives, network connections and battery life.
SysInfo doesn't provide all the details that more specialized gadgets like Network Monitor provide, but it's an excellent overview, and there's an uptime clock that shows how long it's been since the system was started. You can choose to have SysInfo display all its info on the desktop or just in clickable category headers or the single icon, and you can adjust its size on the desktop.
Download SysInfo (265KB)
In contrast, System Control A1 focuses on the essentials. In addition to a prominent digital clock that shows the current time (in a 12- or 24-hour format) as well as uptime, System Control presents a nifty bar graph showing how much memory the system has as well as its free memory available.
It also monitors the utilization of the processor's threads (which it calls cores) over time and displays the results in graphs -- useful information for those who push their systems to the limit.
Unfortunately, System Control's display isn't adjustable, and it can steal a lot of desktop area.
These two gadgets complement each other nicely: SysInfo does a good job of showing a snapshot of many of the current goings-on inside your system, while System Control A1 graphs processor utilization over time, which can be helpful in trying to trace a program that's been using a lot of system resources.
One of these gadgets -- or both -- belongs on every PC.
Download System Control A1 (26KB)
There are few things worse for your computer than allowing its processor, often its most expensive part, to overheat and burn out. All it takes is one key transistor in the chip shorting out and the whole thing is an expensive piece of garbage.
ALCPU's Core Temp Gadget can help keep your PC from getting hot under the collar. For it to work, you'll also need to load the free Core Temp application, but the whole process takes just a couple of minutes.
Version 2 of the Core Temp Gadget shows what processor your system has, its actual clock speed and how much of the system's memory is being used. On many systems, it'll also display the chip's voltage, although some processors -- mine included -- don't support this.
The center of attention, however, is its temperature readings: Core Temp shows how hot it is inside your processor in surprising detail. The gadget displayed not only the temperature in each of my processor's four cores, but graphed them in a line plot. It's excellent information for trying to troubleshoot an intermittent overheating problem.
On top of adjusting the size of the gadget, you can change what information to show, the colors to use and how the graphs are set up. The gadget works with recent AMD and Intel processors, although some Phenom and Phenom II chips have a single temperature sensor and provide only one reading for the entire chip.
In the event that your system does start to overheat, Core Temp has your back. It will display "(!)" next to the temperature reading, open a pop-up warning and even start shutting the system down if you want it to.
Think of it as free insurance for your computer.
Download Core Temp Gadget (389KB)
Inside a PC there are thousands of individual software processes running, including those that interact with your computer's CPU, RAM and hard drive. The fabric of a working computer is the sum of these processes.
The Top Process Monitor gadget acts as your PC's greatest hits chart, showing which processes are using your computer's resources the most. It can show the top processes for various operations including CPU use, memory use, virtual memory use, input-output operations and drive reads and writes.
You can also choose to view any individual process along with its usage data, or have the gadget cycle through any group of them. It's the ultimate snoop to see what's going on inside your computer.
On top of letting you adjust the size of the gadget, Version 2.5 of Top Process Monitor lets you choose which type of operations to display and customize the number of individual processes to show (up to 20) and the colors used.
A nice touch is that Top Process Monitor lets you set a threshold for the amount of system resources any process uses. If it's exceeded, the software gives you a warning. It's a great help if, for example, a sloppy program is using too much virtual memory.
Download Top Process Monitor (139KB)
Having connectivity problems? The Network Meter gadget can help you keep an eye on your connections.
Network Meter takes the concept of "utility" to its natural conclusion. It's chock-full of key networking data, including current upload and download speeds as well as total data moved. It even shows your system's internal and external IP addresses.
The gadget can show you data about a wireless or wired connection as well as the network interface card in use. It's a great first step in troubleshooting a faulty Web connection, helping you pinpoint where to start: the router, the broadband connection or inside the PC.
You can adjust the gadget's size, color scheme and how often it gets new data. At any time you can refresh the local or external IP address, which in itself can save a minute or two of clicking. There's also a link to SpeedTest.net to check your online bandwidth.
Download Network Meter (79KB)
The DC Wireless Network Monitor gadget, on the other hand, shows only the Wi-Fi basics in a tiny rectangle that takes up almost no room on your desktop. Below the main signal strength bar is the name of the network you're connected to as well as the system's IP address and a padlock symbol if it's an encrypted link.
And that's about it, except for the ability to change the color of the gadget. It's ideal for minimalists who just want to keep an eye on their wireless connection.
Disk space and usage
Wondering how much space you have left on your hard drive or whether your drive is working too hard or overheating? O&O DiskStat brings that info and more to your desktop.
By default, the gadget shows two circular gauges: One is a pie chart of drive capacity and availability, and the other shows the drive's activity level. When the drive is idle, it shows 0 percent; when it's maxed out, it shows 100 percent.
If the S.M.A.R.T. drive-monitoring technology is enabled on your system, DiskStat shows the hard drive's temperature below the gauges. You may be able to enable S.M.A.R.T. in your system's BIOS or use a utility like Ariolic's ActiveSMART ($30), which doesn't require a system restart to work.
Click on any part of the DiskStat gadget and it doubles in size, revealing a new section with more details about the drive, including its size and free space.
O&O DiskStat can look at only one drive or disk partition at a time; you choose which drive to monitor in the setup screen. Click on the monkey wrench icon on the right side to get to it.
Of all the gadgets I've seen, O&O DiskStat is the best looking; it displays the right amount of information without seeming cramped. There are two skins that can help this gadget fit into your desktop decor, and you can remove the O&O logo for a minimalist approach. You can't adjust its size, but the gadget lets you choose whether you want the temperature displayed in Celsius or Fahrenheit.
Download O&O DiskStat (134KB)
Those who have multiple hard drives or multiple disk partitions on a single drive should consider running Drive Meter as well. It shows how much data is going into and coming out of each drive as well as its percent utilization.
It doesn't watch the drives' temperature or show you how much space is available, but it provides a good way to keep an eye on disk activity for up to three drives or partitions simultaneously.
Download Drive Meter (33KB)
An eye on graphics
Unlike general system gadgets, GPU Monitor cares about just one thing: your graphics processing unit and how well it is running. A fount of information about your system's graphics and video, this gadget can help pinpoint problems whether you have a budget PC with integrated graphics or a high-end system with a discrete GPU.
In addition to showing which accelerator chip your system uses and key stats such as video memory used and graphics processor load, GPU Monitor shows the chip's and graphics board's temperatures. You can have the gadget warn you with an audio alarm if the graphics subsystem starts overheating, although it can't initiate a system shutdown to prevent damage.
For those experiencing intermittent problems with video, GPU Monitor can keep a log file containing info on any of five main graphics parameters, such GPU temperature and if the fan is on, along with time stamps to help troubleshoot the issue.
GPU Monitor presents a lot of data and can seem crowded, but you can customize it by limiting the types of data it shows, showing data in separate graphs or a single one, and changing the gadget's size and color combination.
Note: Some users with integrated graphics systems might need to load the RivaTuner software, which collects the data that GPU Monitor shows. It's free, and you can download it from within the gadget.
Download GPU Monitor (1.2MB)
Firewall status check
Buried inside the Windows Firewall settings page (accessible via the Control Panel) is the ability to set your firewall profile as Public (for unsecure networks, like café hot spots) or Private (for your secure home or business network). Each profile involves a different mixture of which incoming connections are allowed or blocked.
When connecting a laptop from the road, many travelers move around between secure private connections and public hot spots several times a day. But changing your computer's firewall settings for public or private connections each time you switch networks is a tedious task, and one that's easy to forget. The Windows Firewall Profile gadget assures you that you've made the change properly.