.NEXT (dotNext) is a set of powerful libraries aimed to improve development productivity and extend .NET API with unique features. Some of these features are planned in future releases of .NET platform but already implemented in the library:
Quick overview of additional features:
- Attachment of user data to an arbitrary objects
- Extended set of atomic operations
- Fast conversion of bytes to hexadecimal representation and vice versa with Hex class
ManualResetEvent,ReaderWriterLockSlimand other synchronization primitives now have their asynchronous versions- Atomic memory access operations for arbitrary value types
- PipeExtensions provides high-level I/O operations for pipelines such as string encoding and decoding
- A rich set of high-performance memory buffers for efficient I/O
- String formatting, encoding and decoding with low GC pressure: dynamic char buffers
- Fully-featured Raft implementation
- Fully-featured HyParView implementation
All these things are implemented in 100% managed code on top of existing .NET API.
Release Date: 10-22-2025
- Introduced
DotNext.IO.ModernStreamclass that derives from Stream and implements many of the methods introduced since .NET Framework 1.1 by default in a modern way, requiring only minimal subset of core methods to be implemented by the derived class - Removed async state machine allocations for ad-hoc streams returned by
StreamSourcefactory methods
DotNext.Metaprogramming 5.26.0
- Updated dependencies
- Updated dependencies
- Improved support of timeouts in
CancellationTokenMultiplexer. The scope object now has explicit property to detect whether the multiplexed token source is cancelled due to timeout
- Migration to
ModernStreamclass
- Migration of Raft implementation to
CancellationTokenMultiplexer
DotNext.AspNetCore.Cluster 5.26.0
- Migration of Raft implementation to
CancellationTokenMultiplexer
DotNext.MaintenanceServices 0.7.0
- Migration to
System.CommandLinerelease candidate - Added custom parser configuration (
ParserConfigurationclass) that can be registered in DI
Changelog for previous versions located here.
The libraries are versioned according to Semantic Versioning 2.0.
| Version | .NET compatibility | Support Level |
|---|---|---|
| 0.x | .NET Standard 2.0 | ❌ |
| 1.x | .NET Standard 2.0 | ❌ |
| 2.x | .NET Standard 2.1 | ❌ |
| 3.x | .NET Standard 2.1, .NET 5 | ❌ |
| 4.x | .NET 6 | ❌ |
| 5.x | .NET 8 | ✔️ |
❌ - unsupported, ✅ - bug and security fixes only, ✔️ - active development
Philosophy of development process:
- All libraries in .NEXT family are available for various .NET form factors: Mono, WASM, NativeAOT
- Minimal set of dependencies
- Provide high-quality documentation
- Stay cross-platform
- Provide benchmarks
.NEXT is used by several companies in their projects:
This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit https://cla.microsoft.com.
When you submit a pull request, a CLA-bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., label, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.
This project has adopted the .NET Foundation Code of Conduct. For more information see the Code of Conduct FAQ or contact conduct@dotnetfoundation.org with any additional questions or comments.