Free Windows Tools for Everyone
RBS is built by Rai, a solo developer based in Singapore, with one goal: build genuinely useful free Windows tools and give them away forever — no subscriptions, no paywalls.
Building free tools
for everyone
RBS started from a simple frustration: too much software that should be free is locked behind subscriptions, trials, and paywalls. I'm Rai, a solo developer based in Singapore, and I decided to do something about it.
I build practical Windows utilities — optimizers, cleaners, and productivity tools — that are completely free to download and use. No accounts, no activation codes, no "pro upgrades". Just software that works, built by one person who cares about getting it right.
"Building honest, free tools for everyone."
— Rai, RBS
Free Forever
No paywalls, ever. If I build it, it's free.
Privacy First
I don't collect, sell, or share your data.
Performance
Small, fast, and efficient — no bloat.
Community
Built for real users, shaped by feedback.
Software that actually helps
I focus on Windows utilities that solve real, everyday problems for home users and professionals alike.
System Optimization
Tools that clean up junk, manage startup items, and keep Windows running smoothly over time without slowing down your machine.
Performance Monitoring
Real-time insights into what your hardware is doing, so you can identify and fix bottlenecks without needing expensive diagnostic tools.
Productivity Utilities
Small, focused helpers that streamline daily tasks and get out of your way — the kind of tools you didn't know you needed.
What's coming next
A look at what I've launched and what's in the pipeline.
RBS Optimizer Pro v1.0.0
One-click optimization, junk cleaner, startup manager, and performance monitor.
RBS Voice Cloner v1.0.0
Free AI voice cloning using XTTS v2. Clone any voice in seconds, generate speech in 28+ languages, runs fully offline.
RBS Voice Cloner v2.0.0
Major V2 release with new EQ-bar logo: 16 built-in voices plus unlimited custom clones, 17 languages with auto-translate, 7-band parametric equaliser tuned for voice, redesigned audio editor with live playback cursor and drag-to-select, ships with PyTorch + CUDA 12.8 runtime.
Life Dashboard v1.0.0
All-in-one productivity dashboard with 16 widgets — habits, tasks, finance, weather, sleep, diet, goals and more.
RBS PC Cleaner v1.0.0
Honest Windows maintenance — safe junk cleaner, browser & app cache cleaner, disk analyzer, hash-based duplicate finder, bulk uninstaller, reversible startup manager, gaming mode and 9 theme packs. Never touches the registry.
RBS Screen Recorder
Free screen recorder for Windows — record your screen, webcam, or both. No watermark, no time limit, export as MP4 or GIF.
RBS PDF Tools
Free all-in-one PDF utility — merge multiple PDFs, compress file size, convert Word/images to PDF, and split pages. No upload required, runs fully offline.
RBS AI Captions
Automatic subtitle and caption generator powered by OpenAI Whisper AI. Drop any video or audio file and get accurate captions in 90+ languages — free, offline, no limits.
Have an idea for a tool? Let us know!
💬 Suggest a ToolSupport what I'm building
All my software is free. If you'd like to support development, a small donation goes a long way.