Backend
Backend platforms and backend-as-a-service tools for building applications.
Apache Kafka
Apache-2.0Distributed event streaming platform that stores data as a durable, replayable log, built for high-throughput real-time pipelines rather than traditional point-to-point queuing.
- Backend
Apache RocketMQ
Apache-2.0Distributed messaging and streaming platform built for financial-grade transactional reliability at very high throughput.
- Backend
Appwrite
BSD-3-ClauseOpen-source backend platform providing authentication, databases, storage, functions and realtime APIs, self-hosted or as a managed cloud service.
- Backend
- Database
- Authentication & Security
CloudEvents
Apache-2.0CNCF specification and SDK collection for describing event data in a common, vendor-neutral format across systems and platforms.
- Backend
Dapr
Apache-2.0Portable runtime that gives microservices building blocks - state management, pub/sub messaging, service invocation, and workflow - over a sidecar API in any language.
- Backend
Directus
BUSL-1.1Open source data platform that wraps any SQL database with a dynamic API and an intuitive admin app.
- CMS
- Backend
- API
Hasura
Apache-2.0Instant GraphQL and REST APIs on top of PostgreSQL and other databases, via Data Connectors.
- Backend
- API
- Database
NATS
Apache-2.0Lightweight, high-performance messaging system for cloud-native applications, built around simplicity and low operational overhead.
- Backend
PocketBase
MITOpen source backend consisting of an embedded SQLite database, authentication, file storage and a realtime API in a single executable.
- Backend
- Database
PostgREST
MITStandalone web server that turns any PostgreSQL database directly into a RESTful API.
- API
- Backend
Pulsar
Apache-2.0Distributed messaging and streaming platform that unifies traditional queuing and event streaming with built-in multi-tenancy.
- Backend
Quarkus
Apache-2.0Kubernetes-native Java framework designed for fast startup times and low memory footprint, tailored for containers and serverless.
- Backend
RabbitMQ
MPL-2.0Mature, widely deployed message broker for decoupling services with reliable queues, routing, and pub/sub messaging across AMQP, MQTT, and STOMP.
- Backend
SeaTunnel
Apache-2.0Distributed data integration platform for moving and transforming data between databases, data lakes, and messaging systems at scale.
- Backend
Strimzi
Apache-2.0Kubernetes operator that automates running Apache Kafka clusters, handling deployment, configuration, and lifecycle management.
- Backend
Supabase
Apache-2.0Open source Firebase alternative providing a Postgres database, authentication, instant APIs, edge functions, realtime subscriptions and storage.
- Backend
- Database
- Authentication & Security