Backend & APIs

Server frameworks, microservices, and API tooling

Showing 21-40 of 17,149 projects

twentyhq/twenty

Modern open-source CRM alternative to Salesforce, community-driven

40.2K
Active
TypeScript
SaaS Boilerplates
API Frameworks
NestJS
#crm#open-source#typescript

HeyPuter/puter

Self-hostable internet OS for files, apps, and remote desktop

39.8K
Active
JavaScript
Containerization
Full-Stack Frameworks
Node.js
#cloud-os#desktop-environment#self-hosted

QuivrHQ/quivr

Opiniated RAG for GenAI integration in apps

39.0K
Experimental
Python
RAG & Vector
Vector Databases
Python
#ai#rag#vector-database

halo-dev/halo

开源建站工具,支持博客、CMS和网站构建。

38.0K
Active
Java
Static Site Generators
Authentication
Java
#blog-engine#halocms#content-management-system

BerriAI/litellm

Python SDK and Proxy Server for calling 100+ LLM APIs with cost tracking and guardrails

37.9K
Active
Python
LLM Wrappers & SDKs
API Clients & Testing
Python
#llm-sdk#ai-gateway#cost-tracking

dotnet/aspnetcore

ASP.NET Core is a cross-platform .NET framework for building cloud-based web applications.

37.8K
Active
C#
Full-Stack Frameworks
API Frameworks
ASP.NET Core
#aspnetcore#dotnet#cloud

alibaba/arthas

Java diagnostic tool for troubleshooting production issues without code changes or restarts

37.1K
Active
Java
CLI Tools
Realtime
#java#diagnosis#jvm

juanfont/headscale

Self-hosted Tailscale control server alternative

36.1K
Active
Go
Containerization
Serverless
Go
#tailscale#wireguard#control-server

fastify/fastify

Fastify is a fast and low overhead web framework for Node.js, suitable for vibe coders.

35.7K
Active
JavaScript
Frontend Frameworks
API Frameworks
Next.js
#fastify#nodejs#webframework

nextcloud/server

Nextcloud Server is a self-hosted cloud storage and collaboration platform offering data access, sync, sharing, and security features.

34.3K
Active
PHP
Authentication
Collaboration & Real-time
PHP
#cloud-storage#file-sharing#collaboration

keycloak/keycloak

Open Source Identity and Access Management for modern apps

33.2K
Active
Java
Authentication
Containerization
Java
#identity#authentication#oidc

medusajs/medusa

Flexible commerce platform for building custom e-commerce solutions

32.2K
Active
TypeScript
Full-Stack Frameworks
API Frameworks
Node.js
#e-commerce#typescript#nodejs

apache/kafka

Distributed event streaming platform for data pipelines and real-time apps

32.1K
Active
Java
ETL & Pipelines
Realtime
Java
#kafka#event-streaming#data-pipelines

frappe/erpnext

Open-source ERP system for business operations

32.1K
Active
Python
SaaS Boilerplates
Full-Stack Frameworks
Frappe Framework
#erp#erpnext#frappe

hasura/graphql-engine

Hasura GraphQL Engine provides secure, real-time GraphQL APIs for data sources with access control and event triggers.

31.9K
Active
TypeScript
GraphQL
Realtime
TypeScript
#graphql#realtime-api#access-control

MHSanaei/3x-ui

3X-UI is an advanced web-based control panel for managing Xray-core servers with multi-protocol support.

31.3K
Active
HTML
API Frameworks
Containerization
Xray-core
#xray#control-panel#vpn

Binaryify/NeteaseCloudMusicApi

Node.js API for Netease CloudMusic

30.3K
Archived
API Frameworks
Node.js
#neteasecloud#cloudmusic#nodejs

songquanpeng/one-api

LLM API management & distribution system with unified API for multiple models

30.1K
Stable
JavaScript
API Clients & Testing
LLM Wrappers & SDKs
JavaScript
#llm-api#api-gateway#openai-compatibility

xuxueli/xxl-job

Distributed task scheduling framework for Java

30.0K
Active
Java
Background Jobs
Java
#distributed#task-scheduling#java

apolloconfig/apollo

Apollo is a reliable configuration management system for microservices.

29.8K
Active
Java
Realtime
Secrets Management
Spring Boot
#config-management#microservices#realtime-config
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