# Qt

> Cross-platform development framework with integrated design, development, and quality assurance tools for building applications across embedded systems, mobile 

- **Canonical URI:** https://www.vioscale.ai/software/qt
- **Category:** Mobile App Frameworks
- **Homepage:** https://www.qt.io
- **Also known as:** qt
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-16T21:39:19.495Z

## Vioscale score

**38.5 / 100**, confidence 57% (medium). Computed 2026-09-01.

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| price_level | 80 | 0.04 | 3.2 | ✓ |
| reliability | 0 | 0.053 | 0 | - |
| capabilities | 81.2 | 0.03177777777777778 | 2.6 | ✓ |
| integrations | 8.7 | 0.03777777777777777 | 0.3 | ✓ |
| security_posture | 25 | 0.087 | 2.2 | ✓ |
| pricing_transparency | 25 | 0.053 | 1.3 | ✓ |

## Pricing

_As of 2026-08-16, [verify at source](https://www.qt.io). Independently observed._

Quote-based · Free tier

> Contact sales. Free tier for open source development; Developer License required for commercial use.

| Plan | Price | Free | Commitment |
|---|---|:--:|---|
| Extended Security Maintenance | Contact sales | - | annual |
| Premium Security Maintenance | Contact sales | - | annual |

### Extended Security Maintenance (Contact sales)

Critical security patches and maintenance for supported Qt Framework releases after end-of-support

- Critical vulnerability patches
- Limited to Qt libraries only
- 3-year availability

### Premium Security Maintenance (Contact sales)

Extended security maintenance customized for specific Qt versions and platforms beyond standard ESM offering

- Environment-specific patches
- Patch analysis and porting
- For customers with ESM
- 3-year maximum

## About

Qt is a comprehensive platform providing libraries, frameworks, and development tools for creating user interfaces and applications that run consistently across multiple platforms. It enables developers to design, build, test, and maintain software from concept through deployment using a unified toolset.

_Independently observed._

## Platform & deployment

- **Platforms:** CLI, iOS, macOS, Web, Windows
- **Deployment:** Cloud / SaaS, Hybrid, Self-hosted

## Integrations (1)

_Independently observed._

- Figma

## Capabilities

_The capabilities that matter for Mobile App Frameworks. "-" = undocumented, not absent._

| Capability | Supported |
|---|:--:|
| **Core** | |
| Target platforms | Embedded systems, microcontrollers, iOS, Windows, macOS, web |
| Approach | Multiplatform shared logic |
| Primary language | C++, QML |
| **Rendering** | |
| Renders true native UI | ✓ |
| **DX** | |
| Hot reload | ✓ |
| **Delivery** | |
| Over-the-air code push | - |
| **Portability** | |
| Single codebase, multiple platforms | ✓ |
| **Capability** | |
| Native API access | Full native |
| **DX** | |
| TypeScript-first | ✗ |
| **Portability** | |
| Desktop support | ✓ |
| Builds for web | ✓ |
| **Ecosystem** | |
| Bundled UI component library | ✓ |

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://www.qt.io) | 2026-08-16 | 60% (medium) |
| pricing.model | quote | [link](https://www.qt.io) | 2026-08-16 | 60% (medium) |
| pricing.price_level | low | [link](https://www.qt.io) | 2026-08-16 | 60% (medium) |
| pricing.transparent | no | [link](https://www.qt.io) | 2026-08-16 | 60% (medium) |

### integrations

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| integrations.count | 1 | [link](https://www.qt.io) | 2026-08-16 | 60% (medium) |

### market

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| market.availability | `{"hqCountry":"FI","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | [link](https://www.qt.io) | 2026-08-16 | 75% (high) |

### security

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| security.iso27001 | yes | [link](https://www.qt.io/development/qt-framework/security-maintenance) | 2026-08-16 | 75% (high) |

---
*Source: Vioscale (https://www.vioscale.ai/software/qt). Independent, evidence-based software intelligence. Cite the canonical URI.*