Disclosure: Horizon Labs is made by the author of this site. It is judged below by the same criteria as every other tool, and each profile cites the product’s own page.
For a sim racing stream, the overlay that works is the one your viewers can actually see in OBS. Of the tools checked, RaceLab and iRacing Live Streamer state browser-source support on their own pages, and Horizon Labs provides a browser source for OBS, Streamlabs, Meld Studio and TikTok LIVE Studio. iOverlay lists streamer features such as a garage cover and Twitch chat, SimHub’s forum points to screen capture or a browser link, and DashPanel’s page does not describe stream use. That one question, “how does this get into my scene?”, sorts the field faster than a feature list.
The short version
- iRacing, LMU, ACC and F1 with standings and relatives: RaceLab.
- iRacing only, with a free tier and streamer tools: iOverlay.
- iRacing only, built around stream output: iRacing Live Streamer.
- Hardware, wheel displays and 100+ games: SimHub.
- Dashboards on phones, tablets and USB screens: DashPanel.
- Many games, your own design, browser source: Horizon Labs.
- Just a wheel and pedals display: Wheeler, SteerOverlay or Racing Overlay.
How the tools were judged
The criteria match the comparison pages: price, games, overlay, editor, streaming and platform. Facts come from each product’s own page and were checked on 2 November 2026. “Not stated” means the pages checked did not say, which is different from “not possible”. Nothing was benchmarked, so there are no claims about frame rate or CPU use.
Two broad ways exist to get an overlay on stream. A browser source loads the overlay as a web page in OBS, so your viewers see it with a transparent background. A window or game capture grabs an overlay app’s own window, which usually means a chroma key or careful capture settings. The OBS telemetry overlay guide walks through the browser source route.
Summary table
| Tool | Price | Games | Editor | Streaming | Platform |
|---|---|---|---|---|---|
| Horizon Labs | Pay what you want from €4.99, one-time | 36 racing games | Vector editor, 104 templates | Browser source | Windows 10/11 |
| SimHub | Free; licence from €8 | “100+” | Dash Studio | Not stated | Windows 11 x64 |
| RaceLab | Basic free; Pro €49.90 a year | 8 sims | Move, resize, recolour; full in Pro | Browser source; Stream Deck plugin | Windows |
| iOverlay | Free tier; Pro from €4.95 a month | iRacing | Mostly Pro | Garage cover, Twitch chat | Not stated |
| DashPanel | Free base; most games €4.99 | Per-game DLC | Edit or build dashboards | Not stated | Windows, Android, iOS |
| iRacing Live Streamer | 14-day trial; from £8.33 a month (ex-VAT) | iRacing | CSS styling | Browser source | Windows |
| Wheeler | Pay what you want, $0 allowed | Any, by joystick | Configurable inputs | OBS | Windows |
Horizon Labs
Horizon Labs is a Windows 10 and 11 app that draws a live telemetry HUD over racing games. It is sold on Gumroad as pay what you want from €4.99, one-time, with lifetime updates. It is the author’s own product, so weigh it against the others’ pages.
- Games: 36, including iRacing, Le Mans Ultimate, Assetto Corsa and Competizione and the EA SPORTS F1 games.
- Overlay: in-game, plus LAN mode that shows the HUD on another PC, a tablet or a phone. Console games that export telemetry, such as Forza on Xbox, F1 on PlayStation or Xbox and Gran Turismo, send it to the PC.
- Editor: the Horizon Labs Designer builds a HUD from scratch or from 104 templates and binds 80 telemetry fields.
- Streaming: a browser source for OBS, Streamlabs, Meld Studio and TikTok LIVE Studio.
What it does not do: it is a telemetry HUD, not a race-data suite. It does not provide the standings, relative and series tools that the iRacing-focused apps below are built around. See the overlay page.
SimHub
SimHub is a large sim-racing hub: dashboards and overlays, hardware such as bass shakers and LEDs, and motion. Its supported games page lists iRacing, Le Mans Ultimate, Assetto Corsa Competizione (PC only) and the Codemasters F1 series through F1 25, among many more. The homepage says “100+” games.
- Price: a free version; the licence is pay what you want from €8, and unlocks 60 FPS for hardware devices and auto game switching. Motion needs a separate licence.
- Editor: Dash Studio, plus a community library of dashboards.
- Platform: Windows 11 x64; Windows 10 is listed as untested.
- Streaming: not stated on the pages checked.
If a SimHub overlay does not appear in your scene, see SimHub overlay not showing in OBS, and Horizon Labs vs SimHub for the full comparison.
RaceLab
RaceLab is an overlay suite for competitive sims, with 33 overlays across eight games: iRacing, Le Mans Ultimate, Assetto Corsa Competizione, Assetto Corsa, rFactor 2, Automobilista 2, the F1 games and RaceRoom.
- Price: Basic is free; Pro is €49.90 a year and unlocks all overlays and tools; Commercial is €299 per seat per year.
- Streaming: its page says every overlay works in OBS or any app that accepts a browser source, and a free Stream Deck plugin lets you show or hide overlays with keys.
- Standout: standings, relative and series tools, VR support in Pro.
- Platform: Windows.
It is the closest fit when your stream is competitive iRacing or LMU racing. See Horizon Labs vs RaceLab. For ACC streams, the ACC overlay in OBS guide covers a different route.
iOverlay
iOverlay is an iRacing companion app with in-game overlays and some streamer tools.
- Free: standings with 21 driver data columns, a relative, a fuel calculator, a track map, simple Twitch chat integration and a garage and setup cover for streamers, with separate settings for practice, qualifying and race.
- Pro: €4.95 for one month, €9.95 for three, or €29.95 for twelve. It adds customisable standings and relative, a spotter and incident indicator, a pit entry helper, a multiclass traffic indicator and a race control panel.
- Games: iRacing only.
The garage cover hides your setup on stream, which is a practical streaming feature. See Horizon Labs vs iOverlay.
iRacing Live Streamer
iRacing Live Streamer, from a UK developer, shows a live overlay fed by iRacing Live Timing in your streaming software. Viewers see it; you do not see it while driving.
- Price: a 14-day free trial for new customers; then £8.33 a month or £83.33 a year, excluding VAT. Each plan includes Live Streamer, Live Timing, Live HUD and Discord support.
- OBS: add a Browser source, stretch it over the scene, set 1920 by 1080 at 60 FPS and paste the local overlay link from the app. You can show or hide components and restyle the overlay with CSS.
- Platform: live streaming needs Windows 8 or 10; viewers can use any operating system through their own streaming software.
It is iRacing only. Choose it if your priority is a broadcast-style overlay for a race you commentate or share, not an in-cockpit HUD.
DashPanel
DashPanel shows dashboards on screens, phones, VR and USB displays. The base app is free and shows RPM, speed and gear; full data is a per-game purchase, €4.99 for most games, with a PRO bundle at €25.39.
- Games: per-game add-ons; its Steam page names DiRT 4, DiRT Rally, Project CARS 3, Forza Horizon 4, BeamNG.drive and Wreckfest.
- Editor: edit built-in dashboards or build one from scratch.
- Platform: Windows 10/11 64-bit, Android and iOS.
- Streaming: not stated on the pages checked.
It is a good pick for a dash on a phone, tablet or USB wheel screen. See Horizon Labs vs DashPanel.
Input displays: Wheeler, SteerOverlay and Racing Overlay
Viewers like seeing hands and feet. Three small tools do only that, and none reads car telemetry the way the apps above do.
- Wheeler (OBS Forum resource by Billiam) shows racing wheel, pedal and gear input in place of webcams aimed at the pedals. It supports several input devices at once, is pay what you want including $0, and its page recommends OBS Multiplatform for semi-transparency. The listed version, 0.2.0, was last updated in 2015, so test it on your setup first.
- SteerOverlay (itch.io, Windows) rotates a PNG wheel image from your wheel input. In OBS you add a window capture of SteerOverlay.exe and apply a chroma key; its page warns the window must stay open and must not be minimised.
- Racing Overlay (itch.io, Windows, name your own price) animates wheel, pedals, shifter and handbrake, including heel-toe shifting, and can react to car roll, speed and vertical velocity in DiRT Rally 2.0, BeamNG and Assetto Corsa: Rally. Its page does not mention OBS.
Choosing by game
The game you stream narrows the field more than any feature list.
- iRacing: every tool in this article lists it. RaceLab, iOverlay and iRacing Live Streamer are built around its data. SimHub and Horizon Labs treat it as one game among many. See Horizon Labs on iRacing.
- Assetto Corsa Competizione: RaceLab and SimHub list it (SimHub notes PC only), and Horizon Labs covers it through the Assetto Corsa family.
- Le Mans Ultimate: RaceLab, SimHub and Horizon Labs list it. See the Le Mans Ultimate HUD setup.
- F1 games: RaceLab lists “F1 games” and SimHub lists the Codemasters series through F1 25. Horizon Labs reads the UDP telemetry of the F1 titles from F1 2020 to F1 25.
- Rally, off-road and drifting: RaceLab and iOverlay do not list these. DashPanel names DiRT 4, DiRT Rally and BeamNG.drive on its Steam page, and Horizon Labs covers the DiRT titles and BeamNG.drive.
- Forza and Gran Turismo: none of the iRacing-focused apps apply. Horizon Labs and SimHub are the two with broad lists. See the Forza Horizon 6 roundup.
What viewers actually need to see
A stream overlay is not a cockpit HUD. You glance at your HUD for a split second; viewers can read an overlay for a whole lap, so layout matters more than density.
- Timing first: position, lap time, gap and delta tell the story of a race. Standings and relative overlays do this best for online series racing.
- Inputs second: throttle, brake and steering traces show how you drive. Either a telemetry HUD or a small input display covers this.
- Setup secrets third: if you race for money or in a team, a feature such as iOverlay’s garage cover matters more than another gauge.
- Keep it small: a few clear readouts beat a wall of tiny numbers, and a custom editor lets you remove what your audience does not use.
Left out, and why
Some names come up in streaming threads but have no page that could be checked for this article. Sim Racing Studio’s homepage describes shakers, motion and telemetry for 140+ games, but the page checked did not mention stream overlays. Kapps, an iRacing suite by the streamer kutu182, was described in forum posts, but no official page could be found. Neither is judged here.
How to pick for your stream
- Competitive iRacing or LMU: RaceLab or iOverlay for standings and relative; iRacing Live Streamer for a broadcast-style overlay.
- Several games on one channel: Horizon Labs or SimHub, so you learn one tool.
- You want your own look: Horizon Labs’ Designer, or Dash Studio in SimHub. For a worked example, see building a GT3-style HUD.
- You stream from a second PC: see the second PC HUD guide.
- You want a tablet dash on your desk: DashPanel.
Good to know
- Check the platform line first. Several tools list Windows 10 as untested or require a specific version.
- Each game’s own terms still apply. These tools read the telemetry or timing data the game sends out, and this article does not promise what any publisher or series will allow.
- Subscriptions add up. Pro prices above are per month or per year, while Horizon Labs and SimHub licences are one-time.
Sources: SimHub supported games, SimHub licence, RaceLab, iOverlay, DashPanel on Steam, iRacing Live Streamer manual, Wheeler on the OBS Forum, SteerOverlay on itch.io, Racing Overlay on itch.io, Sim Racing Studio. Checked 2 November 2026.