Open source Postgres development platform bundling a database with auth, auto-generated APIs, realtime, storage, and edge functions.
FastAPI is a Python web framework for building APIs using standard type hints, with automatic OpenAPI and JSON Schema documentation.
The reference C implementation of the PHP general-purpose scripting language and its interpreter, CLI, and bundled extensions.
Rust-native, event-driven engine for backtesting and live trading across multiple asset classes and venues, with Python strategy control.
TokenSpeed is an LLM inference engine built for agentic workloads, with a C++ scheduler control plane and Python execution plane.
Provides a PyTorch backend that runs PyTorch models and operations on Google's Tensor Processing Units (TPUs).
Distributed event streaming platform for building high-throughput data pipelines and streaming applications.
Extensible HTTP/1-2-3 web server written in Go that obtains and renews TLS certificates automatically by default.
Node.js is an open-source, cross-platform JavaScript runtime for running JavaScript outside the browser.
Chinese-language full-stack admin platform (Spring Boot + Vue) with RBAC, multi-tenancy, workflow, payments, mall, CRM/ERP modules, and WeChat mini-program support.
Self-hostable Platform as a Service for deploying apps and databases on your own VPS, with Docker, Traefik, and backups.
Backend APIs, SQL Server database, and Docker deployment tooling for the Bitwarden password manager clients.
Distributed file and object storage system that serves S3, POSIX file system, and Iceberg/Lance table access from one Go binary.
Fork of Paper, the Minecraft server, that ticks independent chunk regions in parallel on a thread pool.
Static recompilation runtime libraries and analysis tools for translating PlayStation 3 binaries into native C/C++ executables.
Gin is a Go HTTP web framework with a Martini-like API built on httprouter for fast REST APIs and web services.
Persistent message streaming platform written in Rust, served over QUIC, WebSocket, TCP, and HTTP transports.
Ruby on Rails source code for Gumroad, an e-commerce platform that lets creators sell products directly to consumers.
Java framework for building distributed, long-running agents with an event stream, tool-call permissions, middleware, and sandboxed workspaces.
Distributed, Raft-replicated key-value store that serves as a reliable configuration and coordination backend for clusters.
Unified analytics engine for large-scale data processing with APIs in Scala, Java, Python, and R.
Scheduled task runner that automates recurring Bilibili daily activities across multiple accounts, with a web panel and console host.
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.
A PHP application server built on the Caddy web server, with worker mode, HTTP/3, and automatic HTTPS.
Official source repository for NGINX Open Source, a high-performance web server, reverse proxy, load balancer, and content cache.
TypeScript library for building type-safe production applications with typed errors, dependency injection, structured concurrency, and schema validation.
Open source server powering lichess.org, a free, ad-free online chess platform with realtime games, analysis, and tournaments.
Free and open source distributed RESTful search and analytics engine built on Apache Lucene.
A curated, community-maintained list of Node.js best practices covering architecture, error handling, testing, security, and more.
Typesense is an open-source, in-memory search engine with typo tolerance, faceting, geosearch, and vector search.
In-memory data structure store used as a cache, database, message broker, and vector/document query engine.
Open-source billing and webshop platform for hosting companies, handling subscriptions and customer services.
Open-source, self-hostable payments infrastructure in Rust that connects to many payment processors and offers routing, vault, and reconciliation modules.
CUDA C++ templates and Python DSLs for building high-performance GEMM and other linear algebra kernels on NVIDIA GPUs.
A distributed database for financial transactions, built around debit/credit primitives with a consensus-replicated storage engine.
A reference e-commerce web application built in .NET using a services-based architecture orchestrated with Aspire.
Java workflow engine that executes BPMN processes, CMMN cases, and DMN decision rules, embeddable or runnable as a server.
A PHP framework and set of reusable components for building web and console applications.
Distributed SQL query engine for big data analytics across many data sources, formerly known as PrestoSQL.
Self-hosted proxy subscription panel, a V2board fork in PHP/Laravel with Octane, supporting newer protocols and features.
Web-based point of sale system written in PHP on CodeIgniter 4, backed by MySQL or MariaDB, with inventory, sales, and reporting.
Core code of the Laravel PHP web application framework, providing routing, dependency injection, ORM, queues, and more.
Ruby web application framework implementing MVC with ActiveRecord, ActionView, ActionController, and related libraries for database-backed apps.
Cross-platform .NET framework for building cloud-connected web, IoT, and mobile backend applications.
A PHP library for composing and sending email with SMTP, attachments, HTML bodies, and address validation.
Java-based video platform implementing GB28181, JT/T 808 and JT/T 1078 with a built-in web admin UI for managing camera and NVR streams.
Self-hosted, federated social network server implementing ActivityPub for publishing posts, media, and following users across servers.
Open-source Ruby commerce platform with REST APIs, TypeScript SDKs, an admin dashboard, and a Next.js storefront.
Reusable, community-audited Solidity smart contract library with ERC20/ERC721 implementations and role-based access control.
Self-hostable web time-tracking application for timesheets, reports, invoices, and team management.
Source-available invoicing app for invoices, quotes, projects, expenses, and time tracking, built on Laravel and offered hosted or self-hosted.
Phoenix is a web framework for Elixir for building HTTP APIs, server-rendered apps, and realtime features.
Async I/O runtime for Zig that schedules lightweight coroutines across OS threads and implements the std.Io interface.
Apache CouchDB is a document database with multi-primary replication and a JSON-over-HTTP API.
Open-source blockchain explorer for viewing, searching, and verifying transactions, accounts, and contracts on EVM chains.
Foundational Java framework providing dependency injection, web MVC, data access, and other infrastructure for enterprise applications.
Open source framework for stateful stream and batch data processing, with Java, Scala, Python, and SQL APIs.
Source for Firebase's open-source Apple platform libraries, covering auth, Firestore, messaging, storage, and more for iOS and macOS apps.
Open-source core banking platform providing a extensible foundation for financial services like loans, savings, and group lending.
Elixir/Phoenix WebSocket server providing Broadcast, Presence, and Postgres Changes for realtime client apps.