redis / redis

In-memory data structure store used as a cache, database, message broker, and vector/document query engine.

rmyndharis / OpenWA

Self-hosted WhatsApp API gateway that exposes WhatsApp sessions, messaging, and webhooks over a REST API with a web dashboard.

apache / kafka

Distributed event streaming platform for building high-throughput data pipelines and streaming applications.

YunaiV / ruoyi-vue-pro

Chinese-language full-stack admin platform (Spring Boot + Vue) with RBAC, multi-tenancy, workflow, payments, mall, CRM/ERP modules, and WeChat mini-program support.

Paymenter / Paymenter

Open-source billing and webshop platform for hosting companies, handling subscriptions and customer services.

bitwarden / server

Backend APIs, SQL Server database, and Docker deployment tooling for the Bitwarden password manager clients.

caddyserver / caddy

Extensible HTTP/1-2-3 web server written in Go that obtains and renews TLS certificates automatically by default.

PaperMC / Folia

Fork of Paper, the Minecraft server, that ticks independent chunk regions in parallel on a thread pool.

antiwork / gumroad

Ruby on Rails source code for Gumroad, an e-commerce platform that lets creators sell products directly to consumers.

emdash-cms / emdash

A full-stack TypeScript CMS built on Astro, with sandboxed plugins and Portable Text content storage.

elastic / elasticsearch

Free and open source distributed RESTful search and analytics engine built on Apache Lucene.

apache / spark

Unified analytics engine for large-scale data processing with APIs in Scala, Java, Python, and R.

php / php-src

The reference C implementation of the PHP general-purpose scripting language and its interpreter, CLI, and bundled extensions.

mastodon / mastodon

Self-hosted, federated social network server implementing ActivityPub for publishing posts, media, and following users across servers.

jeecgboot / JeecgBoot

Enterprise low-code platform (Spring Boot and Vue3) that generates frontend, backend, and database code from natural-language prompts or a code generator.

seaweedfs / seaweedfs

Distributed file and object storage system that serves S3, POSIX file system, and Iceberg/Lance table access from one Go binary.

lichess-org / lila

Open source server powering lichess.org, a free, ad-free online chess platform with realtime games, analysis, and tournaments.

emqx / emqx

Scalable MQTT broker and IoT messaging platform supporting MQTT 5.0, CoAP, LwM2M, and MQTT over QUIC, with a SQL rule engine and data bridges.

juspay / hyperswitch

Open-source, self-hostable payments infrastructure in Rust that connects to many payment processors and offers routing, vault, and reconciliation modules.

RayWangQvQ / BiliBiliToolPro

Scheduled task runner that automates recurring Bilibili daily activities across multiple accounts, with a web panel and console host.

typesense / typesense

Typesense is an open-source, in-memory search engine with typo tolerance, faceting, geosearch, and vector search.

hydra-db / hydradb

Distributed graph database in Rust that stores its data durably on S3-compatible object storage and serves OpenCypher over Bolt and HTTP.