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LiteNetLib

Free#19 of 29 in Game Networking Middleware

LiteNetLib: A flexible UDP library for real-time multiplayer networking across engines and platforms. Ranked #19 of 29 in Game Networking Middleware by our editors (7.2/10); pricing: Open source; best for developers needing a flexible UDP networking library.

7.2/10Editor score

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LiteNetLib7.2 Visit LiteNetLib

At a glance

Editor score
7.2 / 10
Pricing
Open source
Best for
Developers needing a flexible UDP networking library
Paid from
Free
Facts checked
21 Sep 2026

Where it wins
- Supports reliable, unreliable, sequenced, and unordered delivery modes
- Includes fragmentation, MTU handling, NAT punching, and IPv6 support
- Works across .NET, Unity, Godot, MonoGame, desktop, mobile, and Switch
Where it doesn't
- Provides low-level transport rather than matchmaking or persistence
- Uses UDP as its transport protocol
- Requires developers to shape the networking architecture around the library

Our verdict on LiteNetLib

LiteNetLib is an open-source C# networking library for multiplayer games and other real-time applications. It supports both peer-to-peer and client-server communication over UDP, making it suited to developers who need control over transport behavior across .NET, Mono, Unity, Godot, MonoGame, desktop systems, mobile platforms, and Nintendo Switch development. Its hybrid network model and MIT license also fit projects that need a library they can integrate into their own technology stack.

The library’s delivery and packet-handling options are its main strength. Developers can select reliable ordered, reliable unordered, sequenced, or unreliable delivery, with multiple data channels for separating traffic. Automatic packet merging and fragmentation help manage payloads, while MTU detection and override support provide additional control. UDP NAT hole punching, IPv6 support, packet loss and latency simulation, connection statistics, and serialization helpers extend it beyond basic datagram transport and provide tools for building and diagnosing real-time communication.

LiteNetLib is best suited to teams comfortable designing their own multiplayer networking layer. It supplies transport features and diagnostics, but matchmaking and persistence are outside its stated scope, so projects needing those capabilities will need additional systems or a different product. The published project is distributed as an MIT-licensed open-source library, and the latest listed release is LiteNetLib 2.1.4. Choose it when platform reach, delivery-mode flexibility, and direct UDP control matter most; choose an alternative when managed backend services are central to the requirement.

Your product? Our editors can test LiteNetLib in depth and publish a review, labelled as paid · from $149/mo →

LiteNetLib pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on github.com

LiteNetLib fact sheet

Free plan	Not verified
Paid from	Free
Network model	Hybrid
Supported platforms	Windows, macOS, Linux, Lumin OS, MonoGame, Godot, Unity desktop, Android, iOS, Switch
Matchmaking	Not verified
Rollback netcode	Not verified
Max players per session	Not verified
Transport protocols	UDP
Deployment	Desktop, Mobile
Platforms	Windows, macOS, Linux, iOS, Android
Support	Community, Docs
Built for	Solo, Small business, Mid-market, Enterprise (editorial estimate)
Pricing	Open source
Website	github.com
Facts checked	21 Sep 2026

Alternatives to LiteNetLib

See all LiteNetLib alternatives →

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Featured on iTechGuides

LiteNetLib is listed in our Game Networking Middleware directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update