Top 12 Open-Source Alternatives to Unity Multiplayer

Product categories

2D Game Engine 3D Game Engine Analytics App Development Backend As A Service CMS Developer Tools Game Development Game Engine Mobile Push Messaging Realtime Backend / API Web Frameworks

Summary

The top open-source alternatives to Unity Multiplayer are Nakama, Colyseus, and Socket.io. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Nakama Landing Page
1

Nakama

Nakama is an open-source distributed social and realtime server for games and apps.
Pricing:
- Open Source
#Developer Tools #App Development #Game Development 14 social mentions
Colyseus Landing Page
2

Colyseus

Multiplayer Game Server for Node.js. Focus on the gameplay instead of networking.
Pricing:
- Open Source
#Developer Tools #App Development #Game Development 4 social mentions
Socket.io Landing Page
3

Socket.io

Realtime application framework (Node.JS server)
Pricing:
- Open Source
#Developer Tools #App Development #Mobile Push Messaging 717 social mentions
AppWrite Landing Page
4

AppWrite

Appwrite provides web and mobile developers with a set of easy-to-use and integrate REST APIs to manage their core backend needs.
Pricing:
- Open Source
#Developer Tools #Backend As A Service #REST API 167 social mentions
Unity Landing Page
5

Unity

The multiplatform game creation tools for everyone.
Pricing:
- Open Source
#Game Development #Game Engine #3D Game Engine 197 social mentions
Supabase Landing Page
6

Supabase

An open source Firebase alternative
Pricing:
- Open Source
#Developer Tools #Realtime Backend / API #Backend As A Service 429 social mentions
Godot Engine Landing Page
7

Godot Engine

Feature-packed 2D and 3D open source game engine.
Pricing:
- Open Source
#Game Development #Game Engine #3D Game Engine 447 social mentions
PocketBase.io Landing Page
8

PocketBase.io

Open Source backend with realtime database, authentication, file storage and admin dashboard, all compiled in 1 portable executable.
Pricing:
- Open Source
- Free
#Realtime Backend / API #Web Frameworks #Open Source 76 social mentions
Pusher Landing Page
9

Pusher

Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.
Pricing:
- Open Source
#Mobile Push Messaging #Developer Tools #App Development 50 social mentions
RenPy Landing Page
10

RenPy

Ren'Py is a free and cross-platform visual novel engine that helps you use words, pictures, and...
Pricing:
- Open Source
#Visual Novel Engine #IDE #Text Editors 16 social mentions
Avo for Ruby on Rails Landing Page
11

Avo for Ruby on Rails

Avo abstracts away the common parts of building apps, letting your engineers work on your app's essential components.
Pricing:
- Open Source
#CRM #Programming Language #Developer Tools 9 social mentions
Parse Landing Page
12

Parse

Build applications faster with object and file storage, user authentication, push notifications, dashboard and more out of the box.
Pricing:
- Open Source
#Developer Tools #App Development #Backend As A Service 20 social mentions