后端即服务（BaaS）

Build automation flows to connect several apps together in your app's backend. For example, send a Slack message or add a Google Sheet row when an event fires in your app. Free up to 5,000 tasks per month.

Back4App is an easy-to-use, flexible and scalable backend based on Parse Platform.

Mobile and Web Baas, with 1 GB file storage free, push notifications of 50,000/month, and 1000 data objects in the table.

Unlimited chat messages, p2p voice & video calls, files attachments and push notifications. Free for apps up to 1000 users.

Reactive backend as a service, hosting your data (documents with relationships & serializable ACID transactions), serverless functions, and WebSockets to stream updates to various clients. Free for small projects - up to 1M records, 5M monthly function calls.

Define, version, and deploy automation scripts using YAML. A developer-first alternative to drag-and-drop tools. Can be used for scheduled tasks, AI agents, and infrastructure monitoring. Free tier includes 100 credits/month.

Build your Flutter App UI without writing a single line of code. Also has a Firebase integration. The free plan includes full access to UI Builder and Free templates.

Build scalable In-App Chat, Messaging, Video and audio, and Feeds in a few hours instead of weeks

Automate your favorite apps and devices. Free 2 Applets

Automate tedious tasks with a single click. Free 100 Tasks, 15 Minute

Mobile backend. 1GB of data storage, 256MB instance, 3K API requests/day, and 10K pushes/day are free. (API is very similar to Parse Platform)

Serverless backend for web and mobile apps. The free plan includes PostgreSQL, GraphQL (Hasura), Authentication, Storage, and Serverless Functions.

Unlimited free push notifications. 10,000 email sends per month, with unlimited contacts and access to Auto Warm Up.

Backend service API with flexible authentication, full-text search and caching. Free for one app, 1GB of app data.

Free push notifications for up to 1 million messages/month and 100 active daily devices

Free, unlimited push notifications for 2000 monthly active users. A single API for iOS and Android devices.

Move data everywhere instantly and automatically, multi-platform, unlimited sending and storage of structured data, max. 2,500 users/month

AI no-code platform that turns a plain-language description into a complete business system with a relational database, dashboards, workflows, REST API and webhooks. Free plan for solo operators includes 2 apps, 1,000 records and 10 AI requests/day.

The Open Source Firebase Alternative to build backends. Free Plan offers Authentication, Realtime Database & Object Storage.

API management with authentication, quotas, monitoring and analytics. Free cloud offering

Connect the apps you use to automate tasks. Five zaps every 15 minutes and 100 tasks/month