Rustacean Station Hopp with Costa Alexoglou and Iason Paraskevopoulos
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Feb 27, 2026 Iason Paraskevopoulos, a low-level systems and graphics engineer experienced in C/C++ and Rust. Costa Alexoglou, co-creator of Hopp with a startup and database background. They dig into building ultra-low-latency screen sharing, why Tauri was chosen and its limits. They discuss moving from WebKit to a Rust WebRTC stack, bypassing browser constraints, and plans to migrate the core fully to Rust.
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100ms Roundtrip Is The Native Interaction Threshold
- Hopp's core differentiation is achieving sub-100ms controller-feedback loops so remote control feels native.
- They target Apple's human interaction guideline threshold and therefore reimplemented parts of WebRTC in Rust to hit it.
In Call Drawing Solves Remote Control Anxiety
- They implemented an in-call drawing tool because some people feel anxious about remote control and prefer annotating instead.
- Drawing lets collaborators highlight areas without transferring control, improving comfort during pair sessions.
Browser Engines Block Advanced Media Paths
- WebKit inconsistencies (audio routing, rendering, color space) motivated moving heavy media paths into native Rust code.
- Full Rust media handling gives access to buffers and OS APIs (e.g., Apple Neural Engine) without browser transfer penalties.