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Our Story

Built by cloudev

Hyperion is a commercial-grade native web browser created by a single developer who believes the web deserves better. Built from scratch with passion, precision, and modern technology.

The Vision

Why Build a Browser From Scratch?

Every major browser today is either a fork of Chromium or Firefox. While these are capable browsers, they're built on decades of legacy code, carrying forward security vulnerabilities and architectural limitations. Hyperion was born from a simple question: What if we built a browser right, from the very first line?

By starting from scratch, every component—from the HTML tokenizer to the JavaScript engine to the rendering pipeline—can be designed with modern security practices, performance optimization, and clean architecture in mind. No inherited baggage. No compromises. Just pure engineering excellence.

I wanted to prove that a single developer could build something that competes with teams of thousands, not by copying what exists, but by doing it better from the ground up.
1 // Hyperion - Built from Scratch
2
3 struct Hyperion {
4 renderer: Direct2D,
5 parser: RustTokenizer,
6 engine: HyperionJS,
7 sandbox: JobObject,
8 };
C

cloudev

Founder & Lead Developer

A passionate developer with deep expertise in systems programming, browser architecture, and security engineering. With thousands of lines of C++ and Rust code written solo, cloudev has built Hyperion as a testament to what dedicated, focused development can achieve. Every design decision, every optimization, every line of code—written with intention and purpose.

View GitHub Profile
7,500+
Lines Written
5
Languages Used
100%
Original Code
Technical Excellence

The Stack Behind Hyperion

Five programming languages, each chosen for where they excel most.

⚡

C++23 - Core Engine

The backbone of Hyperion. ~6,000 lines of modern C++ power the application framework, UI components, rendering pipeline, and network stack. Built with MSVC and C++23 features for maximum performance.

6,000+
lines
MSVC
compiler
🦀

Rust - Memory Safety

~1,500 lines of Rust provide memory-safe HTML tokenizer and CSS parser. Rust's ownership model eliminates entire classes of security vulnerabilities while maintaining C-compatible FFI performance.

1,500+
lines
FFI
bridge
🟡

JavaScript - HyperionJS

Custom JavaScript engine with bytecode VM, lexer, parser, and runtime. Full ECMAScript support for variables, functions, objects, arrays, control flow, and exception handling. DOM bindings included.

VM
bytecode
AST
parser
Journey

Development Timeline

Phase 1: Foundation

Architecture & Planning

Designed the modular architecture with apps/, browser/, engine/, ui/, platform/ directories. Planned Rust integration with C FFI for memory-safe parsing.

Phase 2: Core

Rendering Engine

Built the Hyperion Rendering Engine (HRE) with Direct2D/Direct3D for native Windows graphics. Implemented box model and flexbox layout engine.

Phase 3: JavaScript

HyperionJS Engine

Created custom JavaScript engine with lexer, parser, and bytecode VM. Supports full variable, function, object, array operations with DOM bindings.

Phase 4: Rust Integration

Memory-Safe Parsing

Integrated Rust HTML5 tokenizer and CSS parser via C FFI. Achieved HTML5 compliance with zero buffer overflow vulnerabilities.

Phase 5: Security

Sandboxed Architecture

Implemented multi-process architecture with Windows Job Object sandboxing. Named pipe IPC for secure communication between browser and renderer.

Now

v0.1.0 Alpha

First public release. 7,500+ lines of code across C++, Rust, C, Python, and Assembly. Native Windows browser with custom JS engine and sandboxed rendering.

Join the Journey

Hyperion is actively developed and always improving. Download the alpha release to experience what a single developer can build when they refuse to compromise on quality.

Download Hyperion View on GitHub