The easiest way to build a multiplayer app.
Multiplayer at the speed of light.

You can think of SpacetimeDB as both a database and server combined into one.
It is a relational database system that lets you upload your application logic directly into the database by way of fancy stored procedures called "modules."

• SpacetimeDB @ GitHub.

A web-based ASCII and Unicode diagram builder written in vanilla Javascript.

Cascii is a web-based ASCII and Unicode diagram builder written in vanilla Javascript.
It has zero dependencies on any servers, web packing, libraries, and is no-markup and no-stylesheets. You can start building diagrams by simply opening the cascii.html file in a browser. Cascii is also hosted at cascii.app where you can get short links to your diagrams, open an account, etc (see the Cascii server repo).

• CASCII @ GitHub.

Open Source Issue management

We offer an innovative issue management and helpdesk solution that serves as an open alternative to Jira and Zendesk. Our platform is designed to streamline customer support processes while being cost-effective, empowering teams to manage projects and support requests efficiently.

• Peppermint @ GitHub.

Related contents:

• Setting Up Peppermint with Docker Compose @ Techdox Docs.
• Self-Hosted Ticketing with Peppermint: Open-Source Helpdesk Setup! @ Techdox's YouTube.

The Headless CMS + Backend for Every Custom Build.
Directus is a real-time API and App dashboard for managing SQL database content.
The flexible backend for all your projects Turn your DB into a headless CMS, admin panels, or apps with a custom UI, instant APIs, auth & more.

Built for developers who need more than just a CMS. Manage complex content structures, handle digital assets, and control user permissions – all through an intuitive Studio.

• Directus @ GitHub.

Event Schedule is an all-in-one platform to create calendars, sell tickets, manage teams, and streamline event check-ins with QR codes.

• Event Schedule @ GitHub.

All-purpose Source-Available Project Management Platform.

JustDo is an all-purpose, enterprise-grade project management platform designed for maximum flexibility and customization.

• JustDo @ GitHub.

R1 1776 is a DeepSeek-R1 reasoning model that has been post-trained by Perplexity AI to remove Chinese Communist Party censorship. The model provides unbiased, accurate, and factual information while maintaining high reasoning capabilities.

Related content:

• Today we're open-sourcing R1 1776, a version of the DeepSeek-R1 model that has been post-trained to provide unbiased, accurate, and factual information. Download the model weights on our HuggingFace Repo or consider using the model via our Sonar API. @ perplexity.

LLM Gateway to provide model access, logging and usage tracking across 100+ LLMs. All in the OpenAI format.

• LiteLLM @ GitHub.

Related contents:

• You need more than a vector database @ Redis.

Haystack Editor combines the simplicity of a code editor with a canvas UI that makes it easier to understand code at a glance It provides comprehensive code editing, navigation, and understanding support along with lightweight debugging, a rich extensibility model, and lightweight integration with existing tools.

• Haystack @ GitHub.

Compose craft is a tool to help you manage, edit and share docker compose files in a GUI way.

• Compose Craft @ GitHub.

Open-Source Data Movement for LLMs. AI Platform.
Data integration platform for ELT pipelines from APIs, databases & files to databases, warehouses & lakes.

The leading data integration platform for ETL / ELT data pipelines from APIs, databases & files to data warehouses, data lakes & data lakehouses. Both self-hosted and Cloud-hosted.

• Airbyte @ GitHub.

Power Your AI with Live Data.

Python ETL framework for stream processing, real-time analytics, LLM pipelines, and RAG.

• Pathway @ GitHub.

The Most Secure and Easy Selfhosted Home Server. Take control of your data and privacy without sacrificing security and stability (Authentication, anti-DDOS, anti-bot) .

Selfhosting your own cloud and web services is so satisfying, but it's also very time consuming, and dangerous. With Cosmos, take the chore out of selfhosting, with automated maintenance and fully secured setup out of the box. It even integrates to your existing setup.

• Cosmos Cloud @ GitHub.

Delightful customer relationships, at scale.
Customer engagement platform.
Open-source live-chat, email support, omni-channel desk.
An alternative to Intercom, Zendesk, Salesforce Service Cloud etc.

Chatwoot is an open-source, self-hosted customer engagement suite. Chatwoot lets you view and manage your customer data, communicate with them irrespective of which medium they use, and re-engage them based on their profile.

Chatwoot gives you all the tools to manage conversations, build relationships and delight your customers from one place.

• Chatwoot @ GitHub.

Gen-AI Chat for Teams - Think ChatGPT if it had access to your team's unique knowledge.

Onyx (Formerly Danswer) is the AI Assistant connected to your company's docs, apps, and people. Onyx provides a Chat interface and plugs into any LLM of your choice. Onyx can be deployed anywhere and for any scale - on a laptop, on-premise, or to cloud. Since you own the deployment, your user data and chats are fully in your own control. Onyx is dual Licensed with most of it under MIT license and designed to be modular and easily extensible. The system also comes fully ready for production usage with user authentication, role management (admin/basic users), chat persistence, and a UI for configuring AI Assistants.

• Onyx @ GitHub.

Open source, self-hosted, lightweight no-code & low-code development platform.

NocoBase is an extensibility-first, open-source no-code/low-code platform for building business applications and enterprise solutions.

• NocoBase @ GitHub.

Curate your own cravings by featuring a rotating selection of images of your choosing!

Welcome to Conscious Cravings - where you get to curate a world where your cravings are aligned with your wellness goals. Let's take the concept of "selfertising" and present yourself with a personal, always-on visual reminder of the foods you choose to inspire you.

Bearlytics is exactly what it says on the tin - a straightforward web analytics tool that helps you understand your website traffic without selling your soul to the tracking gods. No cookies, no PII problems, just the basics:

NoSQL Database. Life is an Adventure — Your Database Shouldn't Be.

ACID Document Database.

• RavenDB @ GitHub.

Related contents:

• Optimizing by 170,000%(!) by not being silly @ Oren Eini.

The Fastest In-Memory Data Store. A modern replacement for Redis and Memcached.

Dragonfly is a drop-in Redis replacement that cuts costs and boosts performance. Designed to fully utilize the power of modern cloud hardware and deliver on the data demands of modern applications, Dragonfly frees developers from the limits of traditional in-memory data stores.

• Dragonfly @ GitHub.