Slint vs Qt

Slint and Qt both land on Depends.

Slint

Depends

Confidence: Medium

Buy if you're a Rust or C++ team building native desktop or embedded GUIs and want a lighter Qt alternative.

Depends

Confidence: Medium

Buy Qt if your team builds embedded, automotive, or cross-platform C++ applications . it is the mature industry standard.

Slint versus Qt
Compare	Slint	Qt
Verdict	Depends	Depends
Best for	Rust or C++ desktop apps	Embedded and device UI teams
Who it's not for	Web app teams . not a web framework	Web-first or mobile-only startups . use Flutter
Privacy	No known public vulnerabilities found in the sources reviewed.^⁴	Mature and actively patched, but a real CVE history exists including a 2025-2026 buffer overflow.
Support quality	No support-quality evidence in sources	No support evidence found
Public sentiment	Rust developers call Slint a promising, lightweight declarative GUI toolkit while flagging rendering issues, async friction, and licensing confusion.^⁸	Developers respect the framework's depth but repeatedly and loudly complain that commercial per-developer pricing is too expensive.
Biggest gotcha	Commercial license needed beyond royalty-free desktop terms . read the FAQ before committing	Per-developer pricing scales brutally . forum users report $5,000+/yr per dev