Top 12 Open-Source Alternatives to built.io

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Product categories

API Tools APIs Analytics App Development Backend As A Service CRM Developer Tools Mobile Push Messaging Push Notifications Realtime Backend / API User Engagement Web Push Notifications

Summary

The top open-source alternatives to built.io are OneSignal, Truepush, 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.

OneSignal Landing Page
1

OneSignal

Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.
Pricing:
- Open Source
- Freemium
- Free Trial
- $9.0 / Monthly (Plus usage-based costs. (Growth Plan). )
#Email Marketing #API Tools #Realtime Backend / API 26 social mentions
Truepush Landing Page
2

Truepush

Unleash limitless possibilities with Truepush and save up to $600 monthly. Free up to 10K Subscribers on all features.
Pricing:
- Open Source
- Free
- Free Trial
#Mobile Push Messaging #Group Chat & Notifications #Push Notifications
Socket.io Landing Page
3

Socket.io

Realtime application framework (Node.JS server)
Pricing:
- Open Source
#Mobile Push Messaging #Analytics #Developer Tools 734 social mentions
Nakama Landing Page
4

Nakama

Nakama is an open-source distributed social and realtime server for games and apps.
Pricing:
- Open Source
#Game Development #Developer Tools #Development 15 social mentions
Skygear Landing Page
5

Skygear

Powerful Open Source Backend for Web and Mobile Apps.
Pricing:
- Open Source
#Backend As A Service #PDF Tools #Developer Tools
GUN Landing Page
6

GUN

Self-hosted Firebase.
Pricing:
- Open Source
#Databases #Graph Databases #NoSQL Databases
Xamarin Landing Page
7

Xamarin

Create iOS, Android and Mac apps in C#
Pricing:
- Open Source
#IDE #Development Tools #Developer Tools 28 social mentions
Supabase Landing Page
8

Supabase

An open source Firebase alternative
Pricing:
- Open Source
#Realtime Backend / API #Backend As A Service #Web Frameworks 501 social mentions
Engagespot Landing Page
9

Engagespot

Engagespot is the easiest way to build your product's multi-channel notification infrastructure. Deliver In-App, Email, Push, SMS, WhatsApp and chat notifications from your app to your users with a single API.
Pricing:
- Open Source
- Freemium
- Free Trial
- $89.0 / Monthly
#Messaging #Push Notifications #User Engagement 5 social mentions
ApyHub Landing Page
10

ApyHub

As the software developer's utility belt, ApyHub offers a collection of powerful utility APIs, making it easier for developers to access data & functionality, save time and boost efficiency.
Pricing:
- Open Source
- Freemium
- Free Trial
#API Tools #Developer Tools #APIs 15 social mentions
Etebase Landing Page
11

Etebase

Etebase makes it easy to build end-to-end encrypted applications by taking care of the encryption and its related challenges.
Pricing:
- Open Source
#CRM #Realtime Backend / API #Mobile Push Messaging
Pusher Landing Page
12

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 #Web Push Notifications #Developer Tools 55 social mentions