
Open-source customer engagement. Automate transactional and marketing messages across email, SMS, mobile push, WhatsApp, Slack, and more π¨

Dittofeed is an open-source, omni-channel customer engagement platform that enables teams to automate transactional and marketing messages across email, SMS, mobile push, WhatsApp, Slack, and more. It provides a developer-friendly alternative to platforms like OneSignal, Customer.io, and Segment Engage with full self-hosting capabilities.
Dittofeed is ideal for development teams, startups, and enterprises that need a self-hosted, open-source customer engagement platform without vendor lock-in. It caters to companies seeking cost-effective alternatives to commercial solutions while maintaining full control over their messaging infrastructure and customer data.

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

π¦ PostHog is an all-in-one developer platform for building successful products. We offer product analytics, web analytics, session replay, error tracking, feature flags, experimentation, surveys, data warehouse, a CDP, and an AI product assistant to help debug your code, ship features faster, and keep all your usage and customer data in one stack.

π¦ PostHog is an all-in-one developer platform for building successful products. We offer product analytics, web analytics, session replay, error tracking, feature flags, experimentation, surveys, data warehouse, a CDP, and an AI product assistant to help debug your code, ship features faster, and keep all your usage and customer data in one stack.

Send push notifications to your phone or desktop using PUT/POST

MJML: the only framework that makes responsive-email easy

Open Source Newsletter Tool.

A list of Free Software network services and web applications which can be hosted on your own servers

π A delightful community-driven (with 2,500+ contributors) framework for managing your zsh configuration. Includes 300+ optional plugins (rails, git, macOS, hub, docker, homebrew, node, php, python, etc), 140+ themes to spice up your morning, and an auto-update tool that makes it easy to keep up with the latest updates from the community.

Get up and running with Kimi-K2.5, GLM-5, MiniMax, DeepSeek, gpt-oss, Qwen, Gemma and other models.

A feature-rich command-line audio/video downloader

Production-ready platform for agentic workflow development.

User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

Virtual whiteboard for sketching hand-drawn like diagrams

An open-source AI agent that brings the power of Gemini directly into your terminal.

JavaScript API for Chrome and Firefox

The worldβs fastest framework for building websites.