Open-source alternatives to Zammad

osTicket is an open-source help desk software and ticket management system designed to centralize customer support inquiries from emails, web forms, and API requests. It functions as a multi-channel support tool that converts incoming communications into a structured queue for agent resolution and IT help desk management. The platform features a dedicated customer support portal where users can submit requests, track ticket status, and access a self-service knowledgebase of help articles and FAQs. It integrates secure OAuth2 email authentication to retrieve and send messages without storing l

FreeScout is a self-hosted, open-source help desk and ticket management system built with PHP. It functions as a customer support platform that enables teams to manage shared inboxes and organize customer email conversations into tickets. The platform distinguishes itself as a multi-channel support dashboard that integrates customer relationship management and a knowledge base system. It provides tools for tracking detailed customer profiles and organizational records while offering a programmable interface to manage and expose support articles. The system covers a broad range of support cap

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

Frappe Helpdesk is a customer support platform built on the Frappe framework. It serves as a ticketing management system for routing customer requests to agents and tracking the lifecycle of support issues from submission to resolution. The system includes a self-service knowledge base for creating searchable libraries of help articles and an SLA monitoring tool for defining and tracking response time targets. The platform manages the coordination of customer issues through agent and user portals. It provides capabilities for support team workflow automation, such as automatic ticket assignm

Faraday is a vulnerability management platform and security tool aggregator designed to centralize security findings from multiple scanners into a single dashboard. It utilizes a relational security database to catalog hosts, services, and security flaws, enabling users to track remediation and analyze organizational risk. The platform distinguishes itself through a plugin-based system that normalizes diverse security tool outputs into a unified data model. It supports deep integration with a wide array of scanners and CLI tools, intercepting shell command output or parsing report files to ag

Security-101 is a vendor-agnostic, foundational cybersecurity learning curriculum organized into modular, framework-aligned modules. It is designed to build core knowledge across multiple security domains without tying content to specific products or platforms, making it suitable for both beginners and professionals seeking a structured introduction to the field. The curriculum is built around established security frameworks, including the MITRE ATT&CK framework for standardized threat analysis and the NIST Cybersecurity Framework for incident response workflows. It covers a broad range of do

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

EspoCRM is an open-source customer relationship management platform and SQL-based business application. It serves as a centralized web interface for tracking leads, opportunities, and contacts, providing a sales pipeline manager and a customizable business logic engine. The platform is distinguished by its ability to function as a custom business application builder, allowing for the creation of tailored entities and automated workflows. It integrates marketing automation tools for campaign coordination and a structured customer support ticketing system for case management. The system covers

Mealie is a self-hosted recipe management platform designed for personal data ownership and household meal planning. It functions as a digital kitchen assistant that allows users to import, organize, and digitize culinary content from websites, images, and videos into a structured, searchable database. The application supports multi-user collaboration through household management, enabling shared access to recipes and meal plans while maintaining distinct permissions. The platform distinguishes itself through extensive automation and integration capabilities. It features a programmatic interf

TheHive is a security incident response platform and multi-tenant case management system. It functions as a Security Orchestration, Automation, and Response (SOAR) tool and a threat intelligence platform designed to coordinate security investigations by managing alerts, cases, and observables. The platform is distinguished by its multi-tenant architecture, which isolates data across different organizations while supporting selective cross-tenant sharing. It features a SOAR automation engine capable of executing sandboxed JavaScript logic to automate workflows and trigger response actions thro

Ever Gauzy is an integrated business management suite providing an ERP and CRM framework for professional services automation. It functions as a multi-tenant SaaS platform that combines time tracking, billing, and human resource management into a unified system. The project is distinguished by its headless architecture, utilizing a REST and GraphQL API gateway to expose business operations. It features a Model Context Protocol server that allows AI assistants to interact with system data and execute functional tools for automated business workflows. The platform covers a broad operational su

Helpy is a customer support platform and omnichannel help desk designed to manage support tickets, knowledgebases, and community forums. It functions as a centralized hub that converts emails into trackable tickets and provides a web interface for support agents. The system includes an embeddable support widget for external websites that connects users to agents or AI chatbots. It also serves as a self-service knowledge base for hosting searchable help articles and as an identity integrator for connecting users to external providers via single sign-on protocols. The platform covers a broad r

Libredesk is an omnichannel support management system designed to unify live chat and email communications into a single dashboard. It provides a comprehensive environment for managing customer interactions, agent roles, and team assignments to organize support workloads. The project distinguishes itself through AI customer support automation, which includes generating automated responses and refining message tones. It also supports the development and integration of custom chat widgets using WebSockets and JavaScript APIs. The system covers a broad set of capabilities, including customer re

Solidtime is time tracking software designed for freelancers and agencies to record work durations, manage billable hours, and monitor labor allocation. It serves as a professional services automation tool that organizes work into clients and projects while managing team member assignments. The system features a billable rate manager that defines hourly costs at the organizational, member, and project levels using hierarchical overrides to calculate total billing. It includes a project management tool for organizing clients and tasks into hierarchies with role-based access permissions. The p

Dolibarr is an open-source business suite and integrated PHP web application designed for ERP and CRM management. It serves as a centralized system for tracking company activities, including sales, invoicing, stock, and accounting. The platform combines financial accounting, human resources management, and web-based inventory tracking. It provides tools for managing general ledgers, bank accounts, employee timesheets, and product catalogs alongside manufacturing orders and warehouse stock levels. The software covers a broad range of operational areas, including customer relationship manageme

Papercups is an open-source live chat platform and self-hosted customer messaging system. It provides a real-time communication infrastructure consisting of an embeddable web widget for customers and a containerized administrative dashboard for support teams. The platform features an omnichannel messaging hub that aggregates and normalizes conversations from email, SMS, and third-party chat channels into a single unified stream. It also includes a framework for deploying automated FAQ chatbots to handle initial inquiries and a real-time session monitoring tool that allows agents to view a use

Flarum is a PHP-based community forum software designed for building and managing structured online discussion spaces. It functions as a self-hosted discussion forum and threaded discussion engine, providing a platform for users to create and participate in community conversations. The platform is designed as an extensible community platform, allowing for customizable forum development through the use of custom extenders to modify system behavior and features. The system includes capabilities for online community management and forum hosting, supported by a console interface for executing ad

WooCommerce is a comprehensive eCommerce framework for WordPress that transforms websites into fully functional online stores for physical and digital goods. It serves as a digital storefront manager for product catalogs, inventory, and customer orders across retail and wholesale business models. The system functions as a payment gateway integrator, connecting shops to diverse processors for credit cards, digital wallets, and subscriptions. It also operates as an order fulfillment system for calculating shipping rates, generating labels, and coordinating delivery via third-party couriers, whi

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

This project is a comprehensive reference collection of practical implementation examples and patterns for building applications with Spring Boot. It serves as a Java web application template and a showcase for developing functional web services featuring REST endpoints, template engines, and global exception handling. The repository distinguishes itself by providing detailed demonstrations of enterprise-grade features, including distributed locking, task scheduling, and asynchronous message exchange using brokers like RabbitMQ. It also includes reference implementations for automated API doc

Lets-chat is a self-hosted team communication platform and XMPP chat server designed for private messaging. It provides a containerized communication environment for small teams to exchange messages and files, featuring a programmable REST API for automating conversations and managing messages from external tools. The platform functions as an XMPP gateway and server, ensuring interoperability with other compliant messaging clients. It distinguishes itself by supporting enterprise identity management, allowing administrators to verify user identities through local accounts or external director

Wekan is an open-source, self-hosted Kanban project management tool used for organizing workflows through boards, lists, and cards. It is a real-time web application that allows teams to manage tasks on private infrastructure. The platform distinguishes itself with extensive data migration tools, specifically for importing boards and cards from Trello. It supports enterprise-grade identity integration via LDAP, OpenID Connect, and OAuth2, and offers flexible storage options including PostgreSQL as a primary relational backend and pluggable cloud storage for attachments. The system covers a w

This project is a self-hosted question and answer platform and knowledge management system. It provides a centralized repository for documented answers and community discussions used to support users and resolve technical issues. The system functions as a plugin-based community forum, utilizing a modular extension system to add custom features and tools. It employs a decoupled architecture with a RESTful API backend to separate business logic from the user interface. The platform covers several domain areas including internal knowledge management, customer help centers, and community Q&A hos

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

DataEase is an open-source, self-hosted business intelligence platform designed for building interactive data visualizations and managing analytical reporting. It provides a centralized environment where users can construct dashboards through a drag-and-drop interface, connecting to diverse data sources including relational databases, data warehouses, and external APIs. The platform distinguishes itself through its focus on embedded analytics and enterprise-grade governance. It allows for the seamless integration of charts, dashboards, and management modules into third-party web applications

Romm is a self-hosted game library manager and ROM management web interface. It serves as a central server for storing and categorizing game files and emulator firmware, providing a web-based browser to organize collections through automated library scanning and metadata retrieval. The project distinguishes itself by integrating a web-based emulator frontend that uses WebAssembly to play games directly in the browser. It further provides a game save synchronization server that uses SSH-based synchronization to transfer save states and progress between the server and registered handheld device

Gotify is a self-hosted notification server designed to centralize the receipt and dispatch of real-time messages. It provides a RESTful API and a WebSocket gateway, allowing users to programmatically send alerts and push notifications to connected clients. By maintaining a private infrastructure, the platform ensures full control over message history, data retention, and access management. The system distinguishes itself through a modular, plugin-based architecture that allows for the extension of core functionality, including custom HTTP endpoints and webhook event processing. It supports g