Windows tuning, with receipts.

OpenBoost saves the original value of every tweak, previews the exact change, and benchmarks whether it actually did anything.

Download for Windows Free and open source; it runs locally.

Most tweaks are noise.

The benchmark runs before and after a batch, three times, and reports the median. On this machine, one metric improved. Three did not. The app says so.

CPU score 690 → 687 690pts Baseline
Memory copy 9.3 → 9.6 9.3GB/s Baseline
Timer delay 11.75 → 12.51 11.75ms Baseline
Worst 1% 16.40 → 16.65 16.40ms Baseline

One measured run on this machine. A different CPU, GPU or background app will move the numbers. The point is the comparison, not the score.

OpenBoost benchmark page showing before and after CPU, memory, timer and worst-frame results.
The real Benchmark page, after a batch. It also checks RAM speed, refresh rate, startup apps and background processes.

The receipts.

Fifty-five tweaks, each with a risk level, an expected impact and a Microsoft source. Three verdicts keep the list honest.

VerdictExamplesWhat it means
Measured Startup delay, menu delay, mouse acceleration A clear, repeatable effect. Still benchmark it on your machine.
Varies Game Mode, hardware GPU scheduling, fullscreen optimizations Helpful on some machines and harmful on others. Test, then keep or undo.
Often placebo QoS cap, network throttling, global timer resolution Usually too small to feel. They stay because people ask for them.

OpenBoost also warns when a tweak can interfere with kernel anti-cheat, and tells you when a saved value was changed outside the app. Read the tweak definitions.

OpenBoost Performance page showing impact tags and Source links beside each tweak.
Every row says what it changes, how much it usually matters, and where Windows documents it.

Nothing is one-way.

Before a tweak is applied, OpenBoost writes down the current registry value, service start type or power plan. Undo puts that exact value back.

Every change keeps its original.

Registry values, service start types and the active power plan are saved before the first write.

Saved first

Preview the exact diff.

See every before → after line before anything is written. Cancel if a line looks wrong.

Preview

Notice a change made elsewhere.

If a saved value no longer matches, Undo asks whether to keep the outside change or restore yours.

Drift check

Say what cannot be undone.

App removal is the one action without a saved original. The app says so before it runs.

Known limit
Preview changes2 values
GameBar\AutoGameModeEnabled1 1
GameBar\AllowAutoGameMode0 1
Original values savedReady
OpenBoost Home page showing CPU and memory use, running processes and findings.
The scan on this machine. No invented dashboard, no stock hardware photo.

Your library, not a launcher.

OpenBoost reads Steam, Epic and GOG manifests directly. It shows what is installed, how large it is, when you last played, and whether an update is waiting.

OpenBoost game library showing Steam, Epic and GOG covers, install sizes, favorites and Session buttons.
Nine installed games found here. Covers are cached locally, so the grid still works offline.

Run a game, apply a reversible per-game optimization, or start a Session that restores the tweaks when the game closes.

  • Run without opening the launcher.Steam, Epic and GOG games launch from the library.
  • Know what is installed.Size, last played, update state and free space on the drive.
  • Keep the games you play.Favorites, search, and filters for launcher and updates.

Take the receipts with you.

The installer adds shortcuts. The portable build runs from any folder. Both are unsigned; check the SHA-256 on the release page.

Download installer Download portable

Latest · Windows 10 or 11 · 64-bit · MIT

Downloads open the latest GitHub release; everything stays on this PC.

Installer
Adds Start-menu and desktop shortcuts, plus an uninstall entry.
Portable
One executable, run from any folder, with nothing left behind.
Requirements
Windows 10 or 11, 64-bit. Nothing leaves the machine.
Build verification
Unsigned by a small open-source project. The source and SHA-256 are public.

Before you install.

Straight answers to the things people ask before running a tweaking tool.

Is it safe? Every reversible tweak saves its original value first. Preview shows the exact change, and Settings restores everything OpenBoost backed up.

Will it raise my FPS? Sometimes. Game Mode and GPU scheduling vary by machine. The benchmark exists so you can see when they do not.

Does it need administrator rights? Some tweaks write to HKLM or change services. The app marks those and offers a restart as administrator.

Why is the build unsigned? Code signing costs money and this is a small open-source project. The source and SHA-256 are public; verify them before running.

What cannot be undone? Removing preinstalled apps. Everything else keeps a saved original; a few changes need a sign-out or restart.

Does it collect anything? It collects nothing. The diagnostics export is manual and redacts your account name.

Which Windows versions? Windows 10 and 11, 64-bit. A tweak that needs a newer build is disabled instead of applied blindly.

Run from source.

Node 20 or newer and Electron. Clone it, install, start. The tweak definitions are plain objects, so you can read every change before it runs.

Open the repository
Terminal 
git clone https://github.com/ExbotsSites/OpenBoost.git
cd OpenBoost
npm install
npm start