The UI layer for the Rust stack
Slint is written in Rust — so wherever safety, security and efficiency push an industry onto Rust, Slint is the native UI.
Pair it with Ferrocene and the stack is qualifiable from pixels to firmware.
One memory-safe, certifiable stack — top to bottom.
Five places Slint earns its keep
Built on Rust, so it wins where Rust wins
Memory-safe & secure
No memory-safety CVEs by construction — the answer to Secure-by-Design mandates.
Defence · critical infrastructure · payment terminals
DARPA & CISA driving C → Rust
Safety-certifiable
Deterministic, no garbage collector — built to pass functional-safety review.
Medical · automotive clusters · rail · avionics
ISO 26262 · IEC 61508 · IEC 62304
Explore safety →
Deeply embedded
Under 300 KB, bare-metal to MCU — fits where other toolkits can't.
Appliances · wearables · sensors · point-of-sale
ESP32 · STM32 · Raspberry Pi
Boards & Silicon →
Autonomous & real-time
Responsive HMIs for machines that sense, decide and act — deterministic under load.
Self-driving cars · autonomous trains · drones · robots
OTIV · Nexter Robotics
Cross-platform & professional
One codebase → embedded, desktop, mobile and web, native everywhere.
Pro audio · trading terminals · fleet & companion apps
WesAudio · Aava
See platforms →
Sound familiar?
The friction you feel every day
“Our UI stutters whenever the CPU gets busy.”
No garbage collector, no surprise pauses. The same inputs draw the same frame, every time.
“We keep three codebases: device, phone and web.”
One .slint compiles to native on all of them.
“The board that fits our BOM can’t run our toolkit.”
Under 300 KB, running bare-metal on the MCU.
“Design hands us a Figma; we rebuild it by hand.”
The Figma plugin turns the design into live .slint.
“The safety auditor stalled on our UI layer.”
Slint-SC is a certifiable core, with a safety manual.
“Qt’s licensing math keeps moving on us.”
Royalty-free on desktop, mobile and web; clear commercial terms.
You’re building a…
Odds are it’s one of these
Building something demanding?
Tell us your target and standard.
Memory-safe, certifiable, embedded or cross-platform — we'll scope how Slint fits, and what your product still owns.