TightVNC review

TightVNC offers a free, time-tested way to connect remotely to multiple operating systems, but it’s not without its flaws

TightVNC logo
(Image: © TightVNC)

IT Pro Verdict

TightVNC is an excellent tool for quick remote desktop tasks across a LAN. But beyond this, its lack of basic encryption and its high latency means it has fallen behind more modern remote desktop apps.


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    Cross-platform viewer


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    High latency

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    Limited support

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    No built-in encryption

TightVNC is one of many remote desktop software solutions that use the virtual network computing (VNC) graphical desktop-sharing system. It relays the mouse and keyboard events from one computer to another, and sends graphical screen updates back, effectively allowing you to use your computer from a remote device.

In our TightVNC review, we look at whether this software—first released in 2001—is still one of the best free remote desktop software platforms with which to control a computer remotely.

TightVNC review: Snapshot

TightVNC is a remote desktop tool that works well on low-bandwidth connections. It’s a good option for low-end computers and devices like the Raspberry Pi, as it’s very lightweight and uses few resources. It’s easy to set up for basic remote admin tasks over a local area network.

The VNC protocol that TightVNC uses results in quite high latency, though, which you’ll notice if you try to use it for more than occasional remote screen sharing and computer administration. It doesn’t have built-in encryption, so you’ll need to take additional steps to secure connections if you want to use it over the internet.

In summary, while it just about does the job, better options exist for SMEs looking for a robust and complete remote administration solution.

Score: 3/5

Read on for our full and detailed TightVNC review.

TightVNC’s competitors

How does TightVNC compare to its main competitors?

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Header Cell - Column 0 TightVNCVNC ConnectMicrosoft Remote Desktop
Pros- Lightweight program -Open-source- Encrypted VNC - Goodsupport channels- Fast protocol - Built-into Windows
Cons- High latency -Limited support- High latency - Relativelyexpensive- Windows-centric -Security concerns
VerdictA helpful backup tool goodfor small remote administrationtasks, TightVNC lacks security features.A more polished VNC servicewith cloud connectivity andbuilt-in encryption.Another quick remote admintool that’s great on Windowsbut less useful for cross-platform admin.
View deals<a href="https://www.tightvnc.com/">Visit site</a><a href="https://www.realvnc.com/en/connect/">Visit site</a><a href="https://docs.microsoft.com/en-us/windows-server/remote/remote-desktop-services/welcome-to-rds">Visit site</a>

TightVNC: Key features

TightVNC offers a few unique features that could make it the right choice for your remote administration needs.

Session sharing

TightVNC's user window on a Windows desktop

TightVNC has various options for session sharing (Image credit: TightVNC)

TightVNC, by default, will disconnect existing remote sessions when a new session is made. You can change this setting so that multiple remote users can view or control the server simultaneously. Alternatively, you can block new remote sessions until the initial session is complete.

This versatility can come in handy when you have an application that must accommodate multiple remote users, potentially at the same time.

Java Viewer

TightVnc's Java Viewer being used to connect to a remote server

Connecting to a remote server using TightVNC Java Viewer (Image credit: TightVNC)

There are two versions of TightVNC—TightVNC for Windows and TightVNC Java Viewer. TightVNC Java Viewer can be run on any system that supports Java SE 1.6 or later. This includes pretty much any modern operating system, including most versions of Linux, macOS, and Windows.

This makes TightVNC Java Viewer a handy tool for working in cross-platform environments. But it doesn’t include the server component, only the client, so you’ll only be able to use it to view remote sessions (as opposed to accepting remote sessions from another device).

TightVNC has an interesting feature, whereby you can specify that only a part of the screen be shared. You can set exact pixel coordinates to be shared or a window class name (e.g., WMPlayerApp for Windows Media Player, or OpusApp for Microsoft Word).

TightVNC's settings menu for split screen screensharing

TightVNC allows multiple connections to access different parts of the screen (Image credit: TightVNC)

Going even further, TightVNC can be set to listen on multiple ports and serve a different portion of the desktop on each one. You could set one remote session to have access to the left side of your desktop, and another to have access to the right side of your desktop, for instance.

This may only have niche applications, but it’s a clever way to share resources remotely with multiple remote users.

TightVNC: What’s new in 2022?

TightVNC doesn’t get updated often. But in September 2021, TightVNC for Windows got a security update that patched a severe security issue in the TightVNC Viewer application. Fast screen-grabbing techniques on Windows 8 and later versions were improved, and a few minor bugs were rectified.

In 2020, a few updates were released, with the most notable change being support for Unicode clipboard transfers (UTF-8) in November 2020.

TightVNC: Pricing

TightVNC is open-source and free to use commercially, and ranks among the best free remote desktop software solutions as a result. If you want to buy a license to the TightVNC source code, it costs around £10,308.

GlavSoft LLC does sell a few complementary products that can work alongside TightVNC. The first is Remote Ripple 2.0, a VNC-compatible remote client for Android, iPhone, and iPad that costs around £3.25.

The other is MightyViewer, first introduced in 2020. It’s an application for Windows that can show multiple VNC sessions concurrently on one screen, allowing you to oversee many remote computers at once. MightyViewer starts at £56.13 for a single-user license.

TightVNC’s pricing plan

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Header Cell - Column 0 TightVNC
Cost per monthFree
Cost per yearFree
Session encryption
Concurrent sessions
Remote audio
Access local devices

Testing TightVNC

We first tested how easy TightVNC is to use by running the TightVNC Server application on a Windows 10 Professional computer, and connecting to it using TightVNC Viewer from a laptop running Windows 10 Professional. This test was performed over an 802.11ac wireless network to simulate a typical office environment.

Another test was performed to evaluate TightVNC’s use over the internet. We connected to a TightVNC server running on a US-based Windows Server 2016 machine from a Windows 10 Professional computer in Southeast Asia. This helped to ascertain how much latency could be expected when using TightVNC over a longer distance.

How easy is TightVNC to use?

TightVNC's settings box

It’s not always clear what the settings in TightVNC do without performing further research online (Image credit: TightVNC)

TightVNC has a short installation program you use on both the client and server computers. You can choose between running the server as a service (so it’s always available) or an application (where you start and stop the server as and when you need it).

When connecting over the internet, you may need to set port forwarding in your router settings. You’ll also need to allow access to the TightVNC port in your firewall settings.

TightVNC can be considered a tool for intermediate users. It has quite a lot of advanced available settings that aren’t explained, and there isn’t a built-in help system. To better understand what these settings do, you need to search online, as many aren’t even discussed in the TightVNC documentation or FAQ. Furthermore, there’s zero support available for free copies of TightVNC.

How fast is TightVNC?

TightVNC being used to connect to a remote server

When connecting to a remote server in our testing, full-screen updates could take up to five seconds to relay (Image credit: TightVNC)

TightVNC’s “tight” protocol was its main selling point when it was first released. It uses fewer bytes and CPU resources to transfer screen update data than the VNC clients that came before it. This makes it an excellent choice for extremely low-bandwidth applications or for old computers.

Nowadays, bandwidth isn’t usually such a big concern, and because of its simplicity, TightVNC’s RFB Protocol’s performance lags behind most new remote desktop protocols. In short, TightVNC suffers from more latency than most remote desktop solutions, so it can feel sluggish to use. The more complex the changes are on the screen, the more noticeable the lag.

How secure is TightVNC?

TightVNC's settings for security

TightVNC can be set to only allow connections from specific IP addresses (Image credit: TightVNC)

TightVNC encrypts VNC passwords, but the rest of the traffic is sent unencrypted. So, if you have any security concerns, you’ll need to wrap your connections in a secure tunnel. If your remote server is running SSH, it’s possible to set up TightVNC to connect through SSH so all data sent is encrypted, but it’s not a straightforward process. Another option is to use a VPN.

You can choose to set a password for full-control, view-only, and administrator roles in TightVNC. But if you have many remote users, they all need to share the same passwords, which is a security risk. TightVNC also allows you to restrict remote access to specific IP address ranges, lowering the chance a malicious actor could gain remote control of your computer.

In summary, TightVNC is quite unsecure, unless you take several additional steps to secure it.

Alternatives to TightVNC

TightVNC is one of many remote desktop solutions that use the VNC protocol. Worthy alternatives include VNC Connect, a modified VNC solution with support for remote audio, faster video streaming, cloud connectivity, and encrypted sessions. TigerVNC is a similar VNC client to TightVNC, and includes end-to-end encryption options.

If you don’t specifically need to use the VNC protocol, your options widen even further. There’s Microsoft Remote Desktop, which is built into most versions of Windows and utilizes the RDP protocol. It’s faster than TightVNC, with better image quality and less latency. But its Windows-centric design makes it a poorer choice if you use many different operating systems.

If you’re happy to pay for a remote desktop solution, we like AnyDesk. It’s easier to use than TightVNC, with a more modern interface, and has apps for all major operating systems.

TightVNC’s features compared to the competition

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Header Cell - Column 0 TightVNCVNC ConnectMicrosoft Remote Desktop
Encrypted sessions
File transfers
SupportPaid commercial supportChat, email, phoneKnowledge base
Basic planFreeFrom £2.49 a monthFree

TightVNC: Final verdict

TightVNC has long been one of the go-to tools in a network administrator’s arsenal, and it still has its merits after over 20 years of service. It’s lightweight, so you can run it on older computers, and it works well even when your connection to the remote server is slow.

It’s difficult to recommend it for more than occasional use over the LAN, however, because it doesn’t have built-in encryption. Setting up a connection over the internet can often require port forwarding rules set in your router. Newer remote desktop solutions can offer a smoother experience with less latency, built-in encryption, streaming audio, and better image quality.

Further reading on remote desktops

If you're interested in finding out more about remote desktop technology and platforms, we've got a wide range of content available for your reference. Learn more about protocols such as RDP, XRDP or VNC and what TeamViewer offers; find out how to use Microsoft Remote Desktop and how to use remote desktop on Windows 10.

If you need walkthroughs for setting up remote access via Microsoft or Apple OSs, see how to use remote desktop on Mac, how to set up Chrome Remote Desktop; and how to remote desktop from Mac to Windows.

Finally, if you're a Linux user, find out how to remote desktop into Ubuntu via the best remote desktop for Linux.

Richard Sutherland

Richard brings more than 20 years of computer science, full-stack development and business operations experience to ITPro. A graduate in Computer Science and former IT support manager at Samsung, Richard has taught courses in Java, PHP and Perl, and developed software for both private businesses and state organisations. A prolific author in B2B and B2C tech, Richard has written material for Samsung, TechRadar Pro, and now ITPro.