📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail

Open-source self-hosted email marketing. Manage your own newsletters at a fraction of the cost.

Building a modern alternative to Salesforce, powered by the community.

⚡ Lingo.dev - open-source, AI-powered i18n toolkit for instant localization with LLMs. Bring your own LLM or use Lingo.dev Localization Engine. Join discord:

"Context engineering is the delicate art and science of filling the context window with just the right information for the next step." — Andrej Karpathy. A frontier, first-principles handbook inspi…

OpenTofu lets you declaratively manage your cloud infrastructure.

Deploy web apps anywhere.

A no-nonsense CAPTCHA system with seamless UX | Backend component

A Hassle-Free Way to Self-Host Google Fonts. Get eot, ttf, svg, woff and woff2 files + CSS snippets

GDPR, WCAG 2.2 AA, and EAA compliant, self-hosted CAPTCHA alternative with PoW mechanism.

Cloud-native high-performance edge/middle/service proxy

The official NGINX Open Source repository.

🔥🔥🔥 Open-source Jira, Linear, Monday, and ClickUp alternative. Plane is a modern project management platform to manage tasks, sprints, docs, and triage.

The open-source notification Inbox infrastructure. E-mail, SMS, Push and Slack Integrations.

The open source Zapier alternative. Build workflow automation without spending time and money.

The Prometheus monitoring system and time series database.

User friendly Rasterio plugin to read raster datasets.

A next-gen FOSS self-hosted unified zero trust secure access platform that can operate as a remote access VPN, a ZTNA platform, API/AI/MCP gateway, a PaaS, an ngrok-alternative and a homelab infras…

Identity-aware VPN and proxy for remote access to anything, anywhere.

A flexible, easy to use set of clients AWS APIs for Elixir

Swoosh <3 Phoenix

Scalar is an open-source API platform:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern Rest API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　…

Rich, real-time user experiences with server-rendered HTML

An Elixir Prometheus metrics collection library built on top of Telemetry with accompanying Grafana dashboards

Open-source dev tools for enterprise SSO. Ship SAML + SCIM support this afternoon.

A modular geospatial engine written in JavaScript and TypeScript

EPSG.io: Coordinate Systems Worldwide

Flexible tool to build planet-scale vector tilesets from OpenStreetMap data fast

OpenLayers

Open Source Routing Machine - C++ backend