1. Product-Specific Definitions

"Software" refers to Avalonia XPF (Business Tier), the proprietary software product provided by Avalonia UI, including its binary code, associated libraries, documentation, and any Software Updates.

"Licensed Application" means the single software application product owned or developed by the Licensee in which the Software is integrated pursuant to this Licence.

"Production Licence Key" means the unique alphanumeric code provided by Avalonia UI that authorises integration of the Software into the Licensed Application.

2. Licence Grant

2.1 Grant of Licence

Subject to payment of all applicable fees and continuous compliance with the Master Terms and this Schedule, Avalonia UI grants to the Licensee a non-exclusive, non-transferable, perpetual Business Licence to:

(a) Integrate and Use. Install and use the Software for developing and integrating it into one software application product (the Licensed Application).

(b) Reproduce and Distribute in Executable Form. Reproduce, embed, and distribute the Software in executable, compiled form only as an integral part of the Licensed Application.

(c) Unlimited Runtime Distribution. The Licensee may deploy the Licensed Application on an unlimited number of devices without additional fees.

2.2 Per-Application Licence Requirement

The Business Licence is limited to a single application. A separate licence must be purchased for each distinct application in which the Licensee wishes to use the Software.

2.3 Platform Scope (Desktop Only)

Each Business Licence includes the right to develop, deploy, and run the Licensed Application (incorporating the Software) on the following supported desktop platforms: Windows, macOS, and Linux (x64 desktop distributions).

Use of the Software on any other operating systems or platforms, including but not limited to mobile platforms (e.g. iOS, Android), WebAssembly, or embedded systems is not included in the scope of this Licence and requires a separate agreement or Avalonia UI's prior written consent.

Avalonia UI may, at its discretion, publish documentation specifying additional platforms supported under a particular licence tier. However, inclusion in such documentation does not by itself expand the scope of this Licence unless expressly authorised by Avalonia UI.

3. Support and Updates

3.1 Included Support Period

Purchase of a Business Licence includes access to Software Updates and support services for an initial period of twelve (12) months from the Effective Date.

Support is provided via email ([email protected]) and the Customer Portal.

Avalonia UI will respond to support requests within five (5) working days.

3.2 Ticket Allocation

Business Support includes twenty-five (25) support tickets per twelve (12) month Support Term.

If the allocated tickets are exhausted before the end of the Support Term, Avalonia UI may, at its discretion, provide additional support under its standard hourly development services terms. As of February 2026, the applicable rate is €245.00 per hour. Prior to commencing chargeable work, Avalonia UI will notify the Licensee, provide an upper-bound estimate, and obtain written agreement to proceed.

Unused tickets do not carry forward to subsequent Support Terms.

3.3 Renewal and Lapse

If the Licensee does not renew support, the perpetual licence continues for the version of the Software in possession at the time support lapsed.

Avalonia UI has no obligation to offer renewal and may, in its sole discretion and for any reason, decline to renew support. If Avalonia UI declines renewal, support will end at the end of the then-current Support Term.

3.4 Product Support Baseline

Support is provided in accordance with Schedule 3 (Product Support), as modified by this Schedule.

3.5 Mixed Avalonia / XPF Integration ("Mix and Match")

The Software includes a feature that enables the integration of Avalonia UI elements within an Avalonia XPF application, and conversely, the embedding of Avalonia XPF controls within an Avalonia application ("Mix and Match"). While this capability is supported at a technical level, the complexity it introduces, particularly in deeply nested or recursively interleaved configurations, makes certain usage patterns inherently unstable and difficult to support.

Accordingly, support for Mix and Match scenarios is explicitly excluded from any applicable service level agreement (SLA) or guaranteed response time commitments. Avalonia UI will make reasonable efforts to assist with issues arising from Mix and Match usage, but reserves the right, at its sole discretion, to deem specific cases unsupported, especially where multiple alternating layers of Avalonia and Avalonia XPF controls are embedded within one another (e.g., Avalonia > XPF > Avalonia > XPF and beyond).

Licensees are encouraged to use Mix and Match functionality judiciously, with awareness that excessive or non-linear view hierarchy composition may exceed the bounds of reliable or maintainable integration. Avalonia UI accepts no responsibility for behaviour arising from unsupported nesting depth or interaction patterns.

End of Schedule 2B