The HDMI dummy plug is one of the smallest, cheapest gadgets on any hardware shelf, and it unlocks a surprising list of workflows. Plug it into an unused HDMI port and the operating system reports a full-resolution display where none exists, which means the GPU keeps rendering, virtual desktops keep working, and remote-streaming apps get something to capture even when the monitor is off. Any of the best apps for HDMI dummy plug streaming below turn a $5 accessory into a real headless workstation, a portable game-streaming rig, or a self-hosted remote desktop. Seven picks that cover the range, from open-source to enterprise-grade.
What to look for in a headless streaming app
- Codec support. H.264 works everywhere, HEVC and AV1 save bandwidth on modern GPUs.
- Bitrate and resolution ceilings. Anything under 30 Mbps caps 4K quality.
- NAT traversal. Direct WAN streaming without port forwarding matters if you leave the LAN.
- Latency floor. Sub-20ms end-to-end is achievable on LAN with the right codec.
- License and telemetry posture. Some tools are ad-supported or closed source, which matters more when the app has full desktop access.
- Client platform reach. A streaming host is only as useful as the clients that can reach it.
Quick comparison table
| App | Best for | Platforms | Free plan | Starting price/mo | Rating |
|---|---|---|---|---|---|
| Sunshine | Open-source Moonlight host | Windows, macOS, Linux | Yes | Free | Excellent |
| Moonlight | Cross-platform client | Windows, macOS, Linux | Yes | Free | Excellent |
| Parsec | Low-latency game streaming | Windows, macOS, Linux | Yes | $10 (Warp) | Very good |
| Steam Remote Play | Zero-config Steam streaming | Windows, macOS, Linux | Yes | Free | Very good |
| Chrome Remote Desktop | Browser-only remote access | Any with Chrome | Yes | Free | Good |
| RustDesk | Self-hostable remote desktop | Windows, macOS, Linux | Yes | Free | Good |
| NoMachine | Enterprise remote workstation | Windows, macOS, Linux | Yes | $44/year | Very good |
The apps
1. Sunshine
Sunshine is the open-source Moonlight host that most headless setups end up on. LizardByte’s project replaced NVIDIA’s discontinued GameStream and works on any GPU, not just NVIDIA. Paired with a dummy plug, Sunshine treats the fake display as the streaming source and any Moonlight client anywhere in the world can log in.
Where it falls short: Setup requires some networking knowledge if you want WAN access. Codec support depends on your GPU generation.
Pricing:
- Free: Full featured, MIT-licensed.
- Paid: None.
Platforms: Windows, macOS, Linux.
Download: Sunshine on GitHub
Bottom line: The default choice for anyone building a headless streaming rig from scratch.
2. Moonlight
Moonlight is the client half of the pair, forked from NVIDIA’s original Moonlight after GameStream shut down. Native builds exist for every desktop OS, plus Android, iOS, Apple TV, and even the Steam Deck. If you’re setting up a dummy-plug host, Moonlight is what runs on your laptop, tablet, or phone to reach it.
Where it falls short: The pairing flow requires a PIN exchange on first setup. Some codecs (AV1) need matched-generation GPUs on both ends.
Pricing:
- Free: All platforms.
- Paid: None.
Platforms: Windows, macOS, Linux.
Download: Moonlight-stream.org
Bottom line: The client for Sunshine on any device that isn’t the host.
3. Parsec
Parsec was the original low-latency game-streaming client, later acquired by Unity. It still works, still ships free for personal use, and pairs well with a dummy plug for headless capture. Warp, the paid tier, adds features like colour accuracy and Windows virtual display drivers for hosts that lack a physical monitor.
Where it falls short: Ownership by Unity brought some ad-friendly nudges in the UI. Free tier caps a few features that used to be free.
Pricing:
- Free: Personal use, one host and unlimited clients.
- Paid: Warp starts around $10/month for teams and enhanced host features.
Platforms: Windows, macOS, Linux.
Download: Parsec.app
Bottom line: Pick this if you want an easier setup than Sunshine and can live with a closed-source client.
4. Steam Remote Play
Steam Remote Play turns any Steam library into a remotely accessible one, and Valve’s Remote Play Anywhere extension lets it work outside the LAN. If a dummy plug keeps a headless Steam machine ticking, Remote Play needs zero config to reach it.
Where it falls short: Only streams Steam-launched games. Latency is competitive but not the best on this list.
Pricing:
- Free: Included with any Steam account.
- Paid: None.
Platforms: Windows, macOS, Linux.
Download: Steam Remote Play
Bottom line: Best for a headless gaming rig where the entire library already lives on Steam.
5. Chrome Remote Desktop
Chrome Remote Desktop is the browser-only fallback. Install once on the host, log in with a Google account, and reach the desktop from any browser anywhere. Not designed for games, but genuinely useful for remote admin on a dummy-plug workstation.
Where it falls short: Latency is fine for productivity, not for games. Requires a Google account and Chrome installed on both ends.
Pricing:
- Free: All features.
- Paid: None.
Platforms: Windows, macOS, Linux (host and client, plus mobile web).
Download: remotedesktop.google.com
Bottom line: For the times a browser is all you have. Perfectly good for remote admin.
6. RustDesk
RustDesk is the open-source alternative to TeamViewer and AnyDesk, and it can be self-hosted for full privacy. The default relay server works out of the box, so a dummy-plug workstation is reachable within minutes of install. If you want to route through your own relay, the server is a single Docker container.
Where it falls short: Not a gaming solution; latency is fine for desktop work but not competitive with Moonlight or Parsec. UI polish lags commercial alternatives.
Pricing:
- Free: Self-hostable, no seat limits.
- Paid: Pro plans available for managed relays.
Platforms: Windows, macOS, Linux.
Download: RustDesk.com
Bottom line: Pick this if you want a TeamViewer replacement you can self-host.
7. NoMachine
NoMachine is the enterprise-flavoured option. Excellent codec quality, colour accuracy, USB redirection, and remote printing all work out of the box. Free for personal use with a fair-use policy, paid tiers unlock team and server management.
Where it falls short: Free tier hides some features behind licensing dialogs. Enterprise plans are priced accordingly.
Pricing:
- Free: Personal Edition.
- Paid: Enterprise from around $44 per named user per year.
Platforms: Windows, macOS, Linux, and Raspberry Pi.
Download: NoMachine.com
Bottom line: Best for a workstation setup where colour fidelity and USB redirection matter.
How to pick the right one
If you want the simplest headless gaming rig, pair Sunshine on the host with Moonlight everywhere else. If you want the easiest paid alternative, Parsec is friendlier for beginners. If everything already lives on Steam, Steam Remote Play costs nothing to try. For remote admin without game latency needs, Chrome Remote Desktop or RustDesk are enough. For professional colour work, NoMachine is the one built for it.
FAQ
Do I actually need an HDMI dummy plug?
If your dedicated GPU has no monitor attached, some cards drop into a low-power mode or refuse to render a virtual desktop at all. A dummy plug fakes an active monitor, keeping the render pipeline alive so remote-streaming apps have something to capture.
What is the best free app for headless streaming?
Sunshine plus Moonlight, on any modern GPU. It’s the same combination YouTubers and PC-gaming communities recommend, and it beats commercial products on latency at LAN distances.
Can I stream 4K over Sunshine?
Yes, with the right GPU and network. NVENC-capable NVIDIA cards, AMD’s VCN, or Intel Quick Sync all handle 4K H.264 or HEVC. Expect around 60 Mbps of bandwidth for smooth 4K60.
Is Parsec still worth paying for?
The free tier still covers most personal use. Warp is worth the money if you need Windows virtual displays without a dummy plug or if you’re running a team of collaborators against a shared host.
Which of these works on the Steam Deck?
Moonlight and Steam Remote Play both run natively on Steam Deck. Parsec has a Deck-friendly desktop build under Proton. Chrome Remote Desktop works through the built-in browser.
