Introducing our .NET Client SDK (Alpha release)

We're excited to announce the alpha release of our .NET Client SDK, enabling real-time sync and offline-first functionality for .NET applications on desktop, server, and traditional binary applications. Support for mobile and web clients, including .NET MAUI and Blazor, is coming up next.

This SDK brings PowerSync’s robust local-first data sync capabilities into the .NET ecosystem, keeping a SQLite database on the client-side in sync with either Postgres, MongoDB, or MySQL on the server-side.

Key Features

The .NET SDK shares the same core features as the other PowerSync SDKs:

• Real-time streaming of database changes: Changes made by one user are instantly streamed to all other users with access to that data. This keeps clients automatically in sync without manual polling or refresh logic.

• Direct access to a local SQLite database: The SDK uses Microsoft.Data.Sqlite to manage a local SQLite database, allowing apps to perform read and write operations directly on the client. Since all data is stored locally, applications can work offline and maintain fast, responsive interactions without relying on network calls.

• Real-Time query subscriptions: The SDK supports query subscriptions that automatically push real-time updates to client applications as data changes, keeping your UI reactive and up to date. Under the hood, it registers hooks on the local SQLite database to detect changes and subsequently re-executes the data queries.

• Automatic schema management: PowerSync syncs schemaless data and applies a client-defined schema using SQLite views. This architecture means that PowerSync SDKs can handle schema changes gracefully without requiring explicit migrations on the client-side.

.NET-Specific Notes:

• Target Framework Support: The SDK supports the following .NET platforms:

  • .NET 8 (LTS) – Primary development and testing target.

  • .NET 9 (Preview/Upcoming) – Early compatibility testing.

  • .NET 6 – Maintained for backward compatibility.

  • .NET Standard 2.0 – Enables compatibility with older frameworks, including .NET Framework 4.8, which is supported with minor configuration adjustments.

• This release primarily targets desktop and server environments. Next, we're adding support for mobile applications, including .NET MAUI bindings. Web clients using Blazor are also on our roadmap.

• We’ve done a simple test with WPF, and it looks like the SDK works for building desktop applications on Windows. We’re still exploring whether any WPF-specific bindings will be needed, but so far, it looks like the SDK is suitable for early WPF testing and validation.

Get Started

To try out the .NET SDK, follow these steps:

1. Command Line Demo – A CLI demo showcasing real-time bidirectional data sync with PowerSync. View on GitHub.

2. Install the SDK via NuGet:

dotnet add package PowerSync.Common --prerelease

3. Follow the Quickstart guide to configure your app.

Resources

• Documentation

• CLI Demo App

• Source code

Alpha Status

This is an alpha release, meaning that while the core functionality is in place, it has not yet been widely tested in real-world applications. As such, we do not recommend using this release in production environments yet. Breaking changes may occur before the beta or V1 release. For more information, refer to PowerSync’s feature status definitions.

Feedback/Questions?

As with any alpha release, we’re eager to hear your feedback. If you encounter any issues, have suggestions, or want to share your experience, please join us on Discord.