Open-source alternatives to Countly Server

This project is a community-driven directory of software resources, libraries, and tools designed to support iOS application development. It serves as a centralized reference point for developers, organizing a vast ecosystem of third-party components into a searchable, structured index to facilitate discovery and project integration. The repository distinguishes itself through its collaborative curation model, which aggregates disparate utilities into a single, maintainable catalog. By leveraging a flat-file documentation structure, it provides a clear overview of the tools available for nati

Goatcounter is a privacy-focused web analytics platform designed to be self-hosted on your own infrastructure. It collects visitor statistics like page views, browser information, location, screen size, and referring sites without using cookies or storing any personal data, identifying unique visits through a non-identifiable hash derived from browser and network data. The platform distinguishes itself by offering multiple tracking methods that respect user privacy, including a lightweight JavaScript snippet, an image-based tracking pixel for environments without JavaScript, and the ability t

Fathom is a privacy-focused website analytics server written in Go. It monitors website traffic and page views without collecting personal data or using intrusive cookies, providing a self-hosted alternative for traffic monitoring. The system utilizes a Preact-based dashboard interface for visualizing traffic patterns and reports. Data is persisted in a SQL database analytics store, with support for MySQL, PostgreSQL, and SQLite. The project covers the collection of visitor data via lightweight tracking snippets and the management of that data through a pluggable storage layer. It includes m

Umami is a privacy-focused web analytics platform and open-source visitor tracking tool. It functions as a self-hosted alternative to commercial tracking services, allowing the operation of a private analytics platform on independent infrastructure to maintain ownership and control over visitor data. The platform focuses on monitoring website traffic and analyzing user behavior without using invasive data collection methods. It provides capabilities for mapping user journeys and performing audience segmentation to compare how different visitor cohorts interact with site content.

EmDash is an open-source content management system built on Astro that combines a visual admin panel with a plugin-driven architecture and server-side rendering. It provides a complete content management system with structured content modeling, a rich text editor using Portable Text format, and a TypeScript API for type-safe content queries. The system supports authentication through passkeys, OAuth 2.1, and external providers, with role-based access control and fine-grained permission scopes. What distinguishes EmDash is its plugin development framework, which supports both native plugins ru

Rybbit is an open-source, self-hosted web analytics platform designed for comprehensive user behavior tracking and product engagement analysis. It provides a complete suite for monitoring visitor interactions, conversion funnels, and site performance, allowing organizations to maintain full ownership of their data and infrastructure. The platform distinguishes itself through a strong emphasis on privacy-compliant data collection and visual session replay capabilities. It supports advanced traffic routing through custom domains to bypass ad blockers and includes configurable masking tools to p

PlotJuggler is an interactive time series visualization tool that loads, streams, and renders large datasets using hardware-accelerated OpenGL graphics. It functions as a multi-format data loader, supporting file formats such as CSV, ULog, and ROS bags, and also serves as a live data stream viewer that subscribes to real-time sources via MQTT, WebSockets, ZeroMQ, and UDP. The tool distinguishes itself through a plugin-based extensibility platform that allows users to add custom data sources, file formats, and processing capabilities. It includes a Lua scripting engine for creating custom data

Chartbrew is a self-hosted business intelligence platform and data visualization engine designed to transform raw data from SQL databases and external API endpoints into interactive charts and dashboards. It serves as a tool for building analytics dashboards that monitor business metrics and KPIs through a privately hosted environment. The platform distinguishes itself with an embedded analytics workflow, allowing users to generate secure, time-limited shared links and iframes to display private charts on external websites. It also provides programmatic chart generation via API and integrates

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

Flagsmith is an open-source platform for managing feature flags and remote configuration across web, mobile, and server applications. It provides a comprehensive REST API for programmatic management of flags, segments, and identities, and can be deployed on private infrastructure for secure, compliant feature flag management with full operational control. The platform distinguishes itself through a server-side flag evaluation engine that resolves segments, traits, and percentage rollouts per request, alongside a multivariate flag variant system supporting multiple typed values with configurab

GodotSteam is a game engine plugin and API wrapper that integrates the Steamworks SDK into the Godot engine. It serves as a bridge between the engine's scripting layer and platform services, allowing applications to access social features and platform-specific connectivity. The project utilizes a C++ wrapper and a C-compatible foreign function interface to bind the Steamworks SDK. It includes a session manager that handles application ID initialization and enforces that the application is launched through the Steam client to validate ownership and session integrity. The integration covers se

This is a backend-as-a-service SDK that connects web and mobile applications to a suite of cloud services. It provides a unified interface for managing user identity, executing serverless logic, and handling cloud object storage. The toolkit is characterized by its real-time data synchronization, which allows NoSQL document data to stay consistent across multiple clients with built-in offline persistence. It facilitates secure user access through a variety of identity providers and manages serverless function invocation to execute backend logic in response to HTTPS requests or database events

Pyrogram is an asynchronous Python framework for interacting with the Telegram MTProto API. It serves as both a bot framework and a user client library, providing a concrete implementation of the MTProto protocol for secure communication with Telegram servers. The library distinguishes itself by providing a high-level wrapper layer that abstracts complex protocol methods into Python functions, while still allowing for the execution of raw API functions and low-level peer resolution. It supports multi-client concurrency, enabling the management of several user or bot identities within a single

CKEditor 4 is a browser-based WYSIWYG rich text editor that enables users to create and format HTML content directly in the browser. It operates on a plugin-based architecture with a configurable toolbar system, DOM-based content editing, and an event-driven lifecycle, all delivered through a CDN-based distribution model. The editor supports skin-based theming and includes a legacy plugin compatibility layer for backward compatibility. The editor distinguishes itself as a cross-platform framework that integrates natively with Angular, React, Vue, Electron, Android, and iOS environments. It of

Nakama is a distributed server framework designed for real-time multiplayer games and social applications. It provides an authoritative runtime environment for executing game logic, ensuring consistent state and cheat-resistant gameplay across diverse client platforms. The system acts as a centralized backend, managing persistent player identities, social graphs, and real-time communication channels to support complex multiplayer interactions. The platform distinguishes itself through an integrated suite of LiveOps tools that allow developers to manage game economies, schedule time-bound even

This project is an open-source, privacy-focused web analytics platform designed for high-throughput data ingestion and multi-tenant data management. It provides a cookie-less tracking engine that captures visitor interactions using ephemeral request metadata, ensuring comprehensive traffic visibility while maintaining strict privacy standards. The architecture utilizes an event-driven ingestion pipeline and aggregated metric storage to decouple data collection from processing, enabling efficient long-term retrieval and responsive dashboard performance. What distinguishes this platform is its

Converse.js is an embeddable, self-hosted XMPP chat client that runs entirely in the browser. It communicates with XMPP servers using standard XML stanzas over WebSocket or BOSH transports, and provides end-to-end encryption through the OMEMO protocol with double ratchet algorithm and X3DH key exchange. The client is built on a plugin-based architecture that allows extending core functionality at runtime without modifying the client itself, and uses a DOM-based rendering approach with an event-driven message bus for internal coordination. The client manages message history through XEP-0313 Me

Reaction is an event-driven, headless commerce platform designed to decouple backend business logic from the frontend presentation layer. It utilizes an API-first architecture with a GraphQL data layer to manage online sales and retail operations. The platform supports multi-tenant resource sharing, allowing multiple independent storefronts to be hosted and managed within a single installation. It features a plugin-based extension system that enables the integration of third-party services and custom business logic through composable workflows. The system covers core retail capabilities incl

FlutterFire is a set of plugins and libraries that provide a Firebase SDK for applications built with the Flutter framework. It functions as a cloud services wrapper that maps Firebase cloud APIs to the Dart programming language, enabling backend integration for cloud data storage, user authentication, and serverless function execution. The project uses a plugin-based modular architecture to separate different cloud services into independent packages. It employs platform-interface abstractions and method-channel-based native interoperability to communicate with native Android and iOS SDKs thr

Publii is a local static site generator and offline content management system. It operates as a desktop application that renders content into HTML files on a local machine, removing server-side vulnerabilities and eliminating the need for a live database or active internet connection during the authoring process. The system is distinguished by a focus on privacy and search engine optimization. It includes built-in tools for GDPR compliance, such as cookie consent management and the ability to restrict third-party embeds until user consent is provided. For visibility, it automates the generati

RabbitMQ is a multi-protocol messaging broker that functions as an AMQP message broker, a clustered message queue, and a distributed message stream. It provides a server for translating and bridging communication between diverse messaging standards to connect heterogeneous systems. The system distinguishes itself through distributed broker clustering and federation, using shoveling mechanisms to synchronize data across geographically separate sites. It supports high-throughput, append-only logs for persisting and reading large sequences of messages for real-time processing. The broker covers

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

Vagrant is a virtual machine environment manager and infrastructure as code tool used to create and configure consistent development environments. It acts as a virtual machine provisioner and hypervisor abstraction layer, allowing users to define machine specifications and automate software installation on guest systems via declarative configuration files. The project enables cross-hypervisor orchestration by decoupling the command interface from specific virtualization backends. It ensures environment consistency through the distribution of pre-configured machine images and the orchestration

Stack Auth is an open-source authentication and authorization platform that provides pre-built UI components, OAuth integration, team management, and session handling for web applications. It offers a complete authentication lifecycle covering sign-in, sign-up, session management, password recovery, and multi-factor security, with support for passkey authentication and OAuth providers including Google, GitHub, and Apple. The platform includes a team-based permission system with role-based access control, allowing users to be organized into teams with granular permissions for membership manage

ONLYOFFICE DocumentServer is a self-hosted online office suite that provides browser-based document, spreadsheet, and presentation editing with real-time collaborative capabilities. It natively supports Office Open XML formats (.docx, .xlsx, .pptx) and can be deployed on Linux servers, either through Docker containerization or direct installation. The server includes a cooperative editing engine that coordinates simultaneous changes across multiple users using operational transformation, with a WebSocket synchronization layer for instant state propagation. Security is handled through JWT auth