Validated measurements
Semantic sensor selection, standard units, physical-range checks, and last-known-good protection keep transient driver values from becoming misleading UI readings.
PrimeMonitor v2.0.0 · Free & open source
Precision monitoring.
Beautifully presented.
Validated hardware readings, demand-driven polling, RTSS-powered FPS analytics, taskbar metrics, game HUDs, widgets, history, and a secure remote dashboard — in one portable Windows application.
✓ GPL v3✓ Portable✓ Windows 10/11 x64
Demand-driven sensors
Poll only what active surfaces need
RTSS Shared Memory V2
No game-process code injection
Serious FPS analysis
Read FPS and frame pacing from RTSS shared memory without injecting code into the game process. Track average, min, max, 1% low, 0.1% low, and frame time.
Secure remote dashboard
Stream selected metrics to phones, tablets, and browsers on the local network with password protection, rate limiting, CSP headers, and constant-time password comparison.
One app, many surfaces
Built around the way you monitor
From an always-visible taskbar strip to deep historical analysis, every surface shares the same efficient hardware producer and visual system.
Main panel & taskbar
Vertical or horizontal panel layouts, compact taskbar-aligned metrics, multi-monitor placement, separate label/value typography, hover details, click-through, and configurable double-click actions.
Desktop & game widgets
Responsive load, temperature, clock, power, memory, and FPS analytics — seven radial widgets, dedicated FPS displays, sparklines, saved sizing, snapping, topmost, opacity, and clickability.
18 themes & live editor
Edit colors, typography, sizing, spacing, borders, opacity, and taskbar presentation with live preview. Theme-aware panels and web surfaces stay coordinated.
History & diagnostics
Review load, temperature, power, clock, FPS, network, and storage trends over 1 hour, 24 hours, or 7 days, then export history to CSV.
Network tools & web UI
Upload/download speed tests, daily traffic, and a responsive live dashboard for another device or Lively Wallpaper.
Auditable data sources
A multilingual Data Sources page explains each metric’s source, unit, aggregation, validation, freshness, and RTSS behavior.
Transparent HUD system
Game metrics that belong on your desktop
Two fixed-layout transparent HUDs keep performance data readable without heavy cards. Choose Emerald, Cyan, or Amber styling independently from the application theme.
Clean, fitted typography
Labels adapt to available width and stay inside the HUD at every supported scale.
Interaction when you want it
Clickable or click-through, topmost, saved positions. Always-on-top works with windowed and borderless fullscreen.
Independent visual identity
Transparent HUD palettes stay stable while the rest of the app follows your theme.
Accuracy & idle efficiency
One validated, demand-driven pipeline
Every surface consumes the same standardized measurement state instead of creating its own polling or conversion logic.
1
Active surfaces declare demand
Panels, widgets, taskbar, and web sessions request their exact metric keys.
2
Select, normalize, validate
Trusted sensors are selected semantically, converted to standard units, range-checked, and protected from invalid transients.
3
One snapshot fans out
Local surfaces and authorized WebSocket clients consume the same validated state; unused source groups stay dormant.
Real application screenshots
Explore PrimeMonitor
Filter the gallery and open any image for a closer look.
Ready in minutes
Requirements & quick start
Requirements
- ▪ Windows 10 or Windows 11, 64-bit
- ▪ No separate .NET install for self-contained releases
- ▪ RTSS optional — only required for FPS metrics
- ▪ Administrator approval may be needed for low-level sensors
Core hardware monitoring, widgets, history, taskbar metrics, and network tools work without RTSS.
Quick start
- 1
Download
Get the latest package from GitHub Releases.
- 2
Extract and run
Portable builds need no traditional installation.
- 3
Choose your surfaces
Enable the panel, widgets, taskbar, or remote dashboard.
- 4
Optional: connect RTSS
Install RTSS when you want FPS and frame-time metrics.
Local-first & open
You control what is exposed
PrimeMonitor is GPL v3 open-source software. Desktop monitoring remains local. Remote access is optional and configurable; external-interface listening requires password protection.
Password-gated remote accessRate limiting & CSPAuditable source codeLocal hardware monitoring
Common questions
FAQ
Is PrimeMonitor free?
Yes. PrimeMonitor is free and open-source software distributed under the GNU GPL v3 license.
Do I need RTSS?
Only for FPS and frame-time statistics. Hardware sensors, widgets, taskbar metrics, history, speed test, and other tools do not depend on RTSS.
Does FPS monitoring inject code into games?
No. PrimeMonitor reads the data that RTSS publishes through Shared Memory V2. Compatibility still depends on the game, RTSS, and anti-cheat environment.
Can I use PrimeMonitor with MSI Afterburner?
Yes. Both can read the same RTSS shared-memory FPS feed. Afterburner can continue overclocking and fan control; PrimeMonitor does not modify those settings.
Why does a widget disappear in fullscreen games?
Widgets are standard Windows desktop windows. Always-on-top works in windowed and borderless fullscreen; exclusive fullscreen cannot show a standard widget above the game.
Can I monitor from my phone?
Yes. Enable the optional web server and open the local address from a phone or tablet on the network. Configure a password before exposing it beyond localhost.
PrimeMonitor v2.0.0
See the machine behind the experience.
Download PrimeMonitor, choose the surfaces you need, and make the monitoring your own.
More products
Questions about PrimeMonitor? Contact maximusprimesoftware@gmail.com · Maximus Prime Software