Open-source alternatives to Romm

Feast is an open-source feature store for machine learning that provides a central platform for defining, storing, and serving features across both training and inference workflows. It operates as a declarative system where feature definitions are written as code in Python files, synchronized to a central registry, and made available for low-latency online retrieval or point-in-time correct historical joins for training datasets. The project abstracts storage behind a pluggable architecture, allowing offline and online backends to be swapped without changing retrieval logic, and coordinates ma

Quarkus is a Kubernetes-native Java framework designed for building high-performance, memory-efficient applications. It utilizes ahead-of-time native compilation to transform Java code into standalone, optimized binaries that eliminate the need for a virtual machine, enabling rapid startup and reduced memory consumption. By performing code augmentation during the build phase, it shifts heavy processing tasks away from runtime, ensuring that applications are optimized for cloud-native environments. The framework distinguishes itself through a unified approach to reactive and imperative program

FastMCP is a Python framework designed for building servers that expose functions, resources, and prompts to AI models using the Model Context Protocol. It simplifies the development process by automatically deriving tool metadata, input schemas, and documentation directly from Python function signatures and type hints. The framework provides a unified container for managing these components, allowing developers to build modular applications that integrate seamlessly with AI assistants. The project distinguishes itself through its support for interactive, server-defined user interface compone

Hydra is a cross-platform desktop application designed to serve as a centralized game library manager. It consolidates video games from multiple sources and platforms into a single, searchable interface, allowing users to organize their collections and manage installations through a unified dashboard. The application distinguishes itself through extensive support for interface personalization and data portability. Users can modify the visual appearance and notification sounds of the launcher by creating or installing community-shared themes. Furthermore, the tool includes integrated cloud syn

OpenMetadata is an enterprise data catalog, metadata platform, and governance suite that functions as a knowledge graph for data assets. It serves as an AI-ready metadata layer, providing governed context and organizational memory to large language model agents via the Model Context Protocol. The platform distinguishes itself by capturing institutional knowledge, linking conversations, decisions, and remediation notes directly to data assets to preserve tribal knowledge. It integrates AI agents to automate metadata governance, such as suggesting descriptions and identifying sensitive data thr

iOS & tvOS multi-emulator frontend, supporting various Atari, Bandai, NEC, Nintendo, Sega, SNK and Sony console systems… Get Started: https://wiki.provenance-emu.com |

Ludusavi is a game save backup manager designed to automate the backup and restoration of game save files and registry entries. It functions as a cross-platform save migrator, transferring game progress and configuration files between different operating systems and hardware platforms. The tool includes a command line interface for executing scheduled backups and managing retention policies through scripts. Users can define custom storage locations for game data that fall outside of standard system manifests. The system provides capabilities for game data recovery, cross-platform save transf

Harbor is a self-hosted, enterprise-grade container registry platform designed to store, sign, and scan container images and cloud-native artifacts. It provides a centralized repository that integrates directly with Kubernetes environments to manage the full lifecycle of software artifacts, from initial storage to production deployment. The platform distinguishes itself through a focus on security, governance, and multi-site availability. It features a pluggable vulnerability scanning framework that allows for the integration of various security engines, alongside content trust mechanisms tha

This project is an AI model API gateway and proxy server designed to provide a unified interface for interacting with diverse artificial intelligence service providers. It functions as a centralized middleware platform that routes, load balances, and translates API requests across multiple models, enabling developers to access text, image, audio, and video generation capabilities through a single, standardized integration. The gateway distinguishes itself through comprehensive administrative and financial controls, including event-driven usage accounting, real-time token consumption tracking,

OctoPrint is a web-based platform for remotely controlling and monitoring 3D printers. It provides a browser dashboard to start, pause, cancel, and track print jobs, while streaming real-time printer status, temperature, and progress updates. The system is built around a plugin-based architecture that allows extending core functionality, and it offers a documented REST API for programmatic printer control and data management. The platform distinguishes itself through its comprehensive automation and extensibility capabilities. It supports event-driven workflows that automatically execute cust

Heroic Games Launcher is a multi-store games launcher and cross-platform game library that provides a unified interface for installing and launching titles from GOG, Epic Games, and Amazon Games stores. It functions as a cloud-synced game manager and a wrapper for compatibility layers to execute Windows games on Linux and macOS. The project distinguishes itself by combining unified store integration with community game compatibility tracking, allowing users to verify if a title is compatible with their specific hardware and operating system. It also features a visual theme engine for interfac

Apostrophe is an open-source Node.js headless content management system that delivers structured content through REST APIs while providing a visual in-context page editor for live editing. It is built on a module-based plugin architecture that extends CMS functionality through reusable modules, each encapsulating logic, configuration, and templates. The system uses schema-driven content modeling to define data structures and validation rules through configurable schemas and custom field types, with all content stored as flexible JSON-like documents in MongoDB. The platform distinguishes itsel

Kutt is a self-hosted URL shortening service built with Node.js and PostgreSQL. It allows users to create short links with custom aliases and expiration dates while managing them through a database-backed system. The service integrates OpenID Connect for user authentication and provides a RESTful API for programmatic link management. The platform distinguishes itself through a custom domain router that maps incoming requests from user-defined domains to specific link records. It includes a dedicated administrative dashboard for branded link management and private analytics tracking to monitor

InvenTree is an open-source inventory management platform built on Django, designed for tracking parts, stock levels, and supply chain operations through a web interface and REST API. The system uses barcodes—including QR codes, 1D barcodes, and Data Matrix codes—as primary identifiers for scanning, linking, and triggering inventory actions, and extends core functionality through a Python plugin framework supporting custom actions, UI panels, barcode handlers, and scheduled tasks. The platform distinguishes itself through a comprehensive plugin-based extensibility system that allows custom in

This project is a game server management panel and multi-user administration tool. It provides a centralized web interface and orchestrator for deploying, configuring, and monitoring game servers running inside isolated Docker containers. The system manages the full lifecycle of server instances, from mapping network allocations and IP addresses to enforcing resource limits through containerization. It includes a hosting dashboard for handling server backups via local or cloud storage and a control plane for remote-agent communication with server nodes. Administrative capabilities cover role

GameNative is a PC game compatibility layer and library manager designed to run desktop game binaries on mobile devices. It functions as a system for executing desktop titles through translation layers and hardware-specific driver optimizations. The project provides a unified interface for aggregating multiple digital storefronts, allowing for the installation and organization of games and downloadable content in one place. It includes a custom input mapping tool that translates touchscreen gestures and controller inputs into legacy keyboard and mouse events. The system covers game performan

Incus is a unified orchestration platform for managing system containers, OCI application containers, and virtual machines through a single control plane. It brings together cluster infrastructure management, secure multi-tenancy, software-defined networking, and pluggable storage backend orchestration into one cohesive system exposed via a full REST API and command-line interface. What distinguishes Incus is its ability to run multiple instance types side by side—full Linux system containers, OCI application containers, and QEMU virtual machines—all managed with consistent tooling. Networkin

WeKnora is a multi-tenant retrieval-augmented generation (RAG) knowledge platform and autonomous AI agent framework. It transforms raw documents into queryable knowledge bases and integrates large language models with vector databases to provide grounded AI responses. The system also functions as a Model Context Protocol (MCP) tool server, exposing knowledge search and agentic capabilities to external AI clients. The platform distinguishes itself through an autonomous agent framework that utilizes iterative reasoning, tool calling, and web search to solve multi-step tasks. It implements a sta

CRMEB is a comprehensive e-commerce platform built on ThinkPHP 6, designed as a headless system that delivers standardized APIs to various frontend clients. It provides a unified backend to synchronize product catalogs, orders, and customer data across web browsers, mobile applications, and mini-programs. The platform supports diverse commerce models, including multi-vendor marketplaces where independent merchants manage their own stores, centralized chain store networks, and social commerce frameworks featuring affiliate distribution and community group buying. It also integrates specialized

Streama is a self-hosted media server and library manager designed for organizing and streaming personal collections of movies and television shows. It functions as a dockerized streaming application that provides a web-based media player for accessing video assets. The system distinguishes itself by supporting synchronized video playback, which coordinates the playback state and timeline across multiple clients in real time. It also enables remote media integration, allowing users to build a streaming collection that combines locally stored files with content hosted at external URLs. The pr

Superset is a web-based business intelligence platform designed for data exploration, visualization, and interactive dashboarding. It functions as a query-driven analytics engine that connects to various SQL databases, allowing users to perform ad-hoc analysis, define virtual metrics, and build complex data visualizations through a centralized interface. The platform distinguishes itself through a robust semantic layer that transforms raw database schemas into calculated columns and virtual metrics, enabling consistent business logic across an organization. It features a plugin-based visualiz

Akaunting is a modular business enterprise resource planning system and self-hosted accounting software. It provides a comprehensive platform for small business financial management, centering on a double-entry bookkeeping system with a general ledger and chart of accounts. The platform is designed for extensibility through a module-based architecture and a dedicated marketplace for procuring third-party applications. It supports multi-tenant data isolation and utilizes role-based access control to manage granular user permissions. Its capability surface covers a wide range of business opera

Mirotalksfu is a WebRTC video conferencing platform and AI-integrated meeting suite. It functions as a real-time communication system for hosting high-resolution audio and video meetings, serving as a self-hosted virtual classroom and a collaborative workspace. The platform distinguishes itself by integrating generative AI assistants, speech recognition, and digital avatars into live sessions. It also operates as an RTMP streaming gateway, allowing users to broadcast live meeting content to external audiences and platforms. The system provides a collaboration suite featuring a shared interac

This project provides containerized images for deploying a self-managed content collaboration and file sharing server. It enables the creation of private cloud storage and self-hosted file synchronization environments, allowing users to maintain data ownership and control over their infrastructure. The deployment model utilizes Docker images to simplify installation, scaling, and version updates. It distinguishes itself through a database-agnostic storage approach, supporting integration with PostgreSQL, MySQL, MariaDB, or SQLite, and employs volume mapping to ensure data persistence across c

OpenEMR is an open-source electronic health record (EHR) system that also functions as a medical practice management platform and a patient portal, all integrated with standards-based health data exchange. It stores and manages patient health records, handles clinical workflows, supports scheduling and billing, and provides patients with secure self-service access to their information. Interoperability is built in via FHIR and C-CDA for exchanging records with external systems and Direct protocol for encrypted provider messaging. The system is designed to be extensible, with a modular plugin

Doccano is a collaborative data labeling platform and machine learning dataset management system. It provides a web-based interface for teams to import raw text, mark datasets, and export structured annotations for model training. The project specifically supports text annotation for classification and named entity recognition tasks. It enables teams to coordinate multiple users on a single project to maintain consistent labeling guidelines and increase the speed of dataset creation. The system includes tools for data management and team coordination, providing the ability to import raw data