Fish-Networking is a free open source, easy to use, feature rich HLAPI networking library for Unity. Our product is created and maintained by a professional game developer, and improved regularly through community feedback and submissions.

Fish-Networking is faster and provides more features than any other free networking solution. With FishNet you can scale larger while saving over 70% in server fees compared to competitors, and access free features commonly only seen in expensive products.

Develop games on Fish-Networking for massively multiplayer, competitive arcade, shooters and more.

We fully support Unity LTS for 2019, 2020, 2021, 2022, and have no known issues with 2023!

Our features are endless!

• Rigidbody controllers and real-time physics interactions support!

• Zero hotpath allocations.

• Built-in client-side prediction with examples!

• Nested network objects.

• SyncVar, SyncObject, RPCs.

• Synchronize more data types.

• Clear and completely commented API and XML.

• Fast domain reload support.

• Quick and easy addressables support.

• Powerful single, additive, stacked scene management.

• Advanced area of interest and level of detail system.