Search Results for "private messaging system"
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Showing 215 open source projects for "private messaging system"
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CIM
Distributed instant messaging system for developers
CIM(CROSS-IM)A developer-oriented system, provides components to help developers build their own distributed instant messaging system that can be a horizontal scaling IM. CIM is an IM Instant messaging system, can be applied as a message push middleware. IOT Message transparent transmission middleware in massive connection scenarios. Provides flexible horizontal expansion and contraction according to the actual situation. -
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Telegram for Android
Telegram messenger for Android
Telegram is a wonderful and private messaging app that offers simple, fast, secure and synced messaging for all your devices. It delivers messages faster than any other application; cloud-based so you can access your messages from any device; and very secure, with messages heavily encrypted and could even self-destruct. Telegram is simple and fun to use, with powerful photo and video editing tools as well as an open sticker/GIF platform to let you express yourself fully. ... -
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Signal Server
Server supporting the Signal Private Messenger applications on Android
Signal Server is the official backend server component that supports the Signal Private Messenger ecosystem on Android, iOS, and desktop platforms, serving as the trusted message relay, contact discovery, and push notification hub while the clients handle end-to-end encryption. Built in Java and licensed under the AGPL-3.0 license, this server software handles protocols for delivering encrypted messages, synchronizing user metadata like public keys and push tokens, and providing REST and... -
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Apache RocketMQ
Distributed messaging and streaming platform with low latency
...Built-in message tracing capability, also support opentracing. Versatile big-data and streaming ecosytem integration. Message retroactivity by time or offset. Reliable FIFO and strict ordered messaging in the same queue. Efficient pull and push consumption model. Million-level message accumulation capacity in a single queue. Multiple messaging protocols like JMS and OpenMessaging. Flexible distributed scale-out deployment architecture. Lightning-fast batch message exchange system. -
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GmsCore
Free implementation of Play Services
microG GmsCore is a FLOSS (Free/Libre Open Source Software) framework to allow applications designed for Google Play Services to run on systems, where Play Services is not available. The linux-based open-source mobile operating system Android is not only the most popular mobile operating system in the world, it’s also on the way to becoming a proprietary operating system. How is that? While the core operating system is still released as part of the Android Open Source Project, the majority... -
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Besu Ethereum Client
An enterprise-grade Java-based, Apache 2.0 licensed Ethereum client
...Please also read the wiki for more details on how to submit a pull request (PR). Besu is an Apache 2.0 licensed, MainNet compatible, Ethereum client written in Java. Participation in private networks is typically restricted in some way, so the volume of traffic is much lower than on Mainnet, resulting in lower system requirements. Depending on your environment and network setup, the minimum Java Virtual Machine (JVM) memory requirement for private networks is 4 GB. -
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Chronicle Queue
Micro second messaging that stores everything to disk
Micro second messaging that stores everything to disk. With millions of users worldwide, Chronicle Queue is a leading choice for organizations of all sizes seeking a low-latency, high-performance messaging framework. The Chronicle Queue Enterprise version eliminates compatibility issues and allows for the seamless integration and sharing of data between Java, Rust, Python, and C++ libraries. Chronicle Queue is available as a fully native Java, Rust or C++ library, and also supports a Python... -
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PULSAR
Distributed pub-sub messaging system
...Low publish latency (< 5ms) at scale with strong durability guarantees. Configurable replication between data centers across multiple geographic regions. Built from the ground up as a multi-tenant system. Supports isolation, authentication, authorization and quotas. Persistent message storage based on Apache BookKeeper. IO-level isolation between write and read operations. Flexible messaging models with high-level APIs for Java, Go, Python, C++, Node.js, WebSocket and C#. -
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ThingsBoard Message Queue (TBMQ)
Open-source, scalable, and fault-tolerant MQTT broker
TBMQ is a lightweight message broker built to support ThingsBoard's IoT platform, focusing on telemetry data streaming and device communication. It uses Kafka-compatible APIs and is optimized for high-throughput messaging, device scalability, and low-latency delivery. TBMQ is ideal for IoT backends needing MQTT or Kafka-style pub/sub infrastructure. -
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Simple Binary Encoding (SBE)
Simple Binary Encoding (SBE) - High Performance Message Codec
...For the latest version information and changes see the Change Log with downloads at Maven Central. The Java and C++ SBE implementations work very efficiently with the Aeron messaging system for low-latency and high-throughput communications. The Java SBE implementation has a dependency on Agrona for its buffer implementations. -
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springcloud-learning
Build microservices with the Spring Cloud ecosystem
springcloud-learning is a hands-on tutorial repository that walks Java developers through building microservices with the Spring Cloud ecosystem. It breaks concepts into small, runnable modules so you can focus on one capability at a time—service discovery, configuration management, gateway routing, fault tolerance, messaging, and observability. The code emphasizes practical integration with common infrastructure like Nacos/Eureka for registry, Nacos/Config Server for configuration,... -
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I2P
I2P is an anonymizing network to securely communicate
The Invisible Internet is a privacy-by-design, people-powered network. It is a truly free and anonymizing Internet alternative. Get I2P. The Invisible Internet Project (I2P) is a fully encrypted private network layer. It protects your activity and location. Every day people use the network to connect with people without worry of being tracked or their data being collected. In some cases people rely on the network when they need to be discrete or are doing sensitive work. I2P hides the server... -
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WGCLOUD
Visibility into servers, applications, and infrastructure
...The platform includes advanced operational capabilities such as web-based SSH access, batch command execution, and visual topology generation, making it more than a passive monitoring tool. wgcloud is intended for private, self-hosted deployments where organizations want full control over monitoring data without relying on external cloud services. -
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goodsKill
Microservices-based flash sale system for high-concurrency testing
...Designed primarily as a learning reference, it showcases scalable system design, microservices communication, and real-world tradeoffs in handling high-traffic transactional systems. -
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Aeron
Efficient UDP unicast, UDP multicast, and IPC message transport
...Aeron Cluster provides support for fault-tolerant services as replicated state machines based on the Raft consensus algorithm. Performance is the key focus. A design goal for Aeron is to be the highest throughput with the lowest and most predictable latency of any messaging system. Aeron integrates with Simple Binary Encoding (SBE) for the best possible message encoding and decoding performance. Many of the data structures used in the creation of Aeron have been factored out to the Agrona project. -
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Toaster Frame
Android toast frame, dedicated to treating various difficult problems
...In practice, Toaster is useful for Android teams that want consistent UI feedback without building a custom notification system from scratch. -
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X's Recommendation Algorithm
Source code for the X Recommendation Algorithm
The Algorithm is Twitter’s open source release of the core ranking system that powers the platform’s home timeline. It provides transparency into how tweets are selected, prioritized, and surfaced to users, reflecting Twitter’s move toward openness in recommendation algorithms. The repository contains the recommendation pipeline, which incorporates signals such as engagement, relevance, and content features, and demonstrates how they combine to form ranked outputs. -
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AWS IoT Device SDK for Java
Java SDK for connecting to AWS IoT from a device
The AWS IoT Device SDK for Java enables Java developers to access the AWS IoT Platform through MQTT or MQTT over the WebSocket protocol. The SDK is built with AWS IoT device shadow support, providing access to thing shadows (sometimes referred to as device shadows) using shadow methods, including GET, UPDATE, and DELETE. It also supports a simplified shadow access model, which allows developers to exchange data with their shadows by just using getter and setter methods without having to... -
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Brokk
Brokk brings code intelligence to AI
Brokk is a code intelligence assistant framework designed to let large language models (LLMs) understand code semantically (not just as raw text) so that they can work effectively on large codebases that don’t fit wholly in a prompt context. It helps bridge the gap between LLMs and real-world engineering code by offering tooling to index, analyze, query, and augment code context, so that AI can meaningfully reason about existing code, suggest edits, and navigate across projects. Modular... -
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Mall Learning
Tutorial and sample-code repository
...For each topic it provides sample code, explanations of why design decisions were made, trade-offs and how to implement real-world features like search, caching, delayed messaging, file storage. It’s aimed at developers who want to understand how to build scalable e-commerce systems rather than just copy-paste modules. With clearly organized “tiny” modules (mall-tiny-01 etc) the repo supports step-by-step incremental learning. -
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mall-swarm
Microservices edition of the mall e-commerce system
...The repository is structured to show how cross-service concerns like service registry, configuration center, monitoring, distributed transactions, API gateway and messaging are done in microservice architecture. It is used as a teaching platform to help engineers migrate from monolith to microservices, grasp the patterns, pitfalls and infrastructure considerations (e.g., Nacos, Seata). The documentation includes diagrams of system architecture, business architecture, service organization, and shows how to set up on Kubernetes. -
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Freenet front end written in Java. Supports multiple up/downloads, messages, searching and more.
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eBus
Publish/Subscribe, Request/Reply Messaging API for Java.
A Java middleware API supporting broker-less, type+topic-based publish/subscribe and request/reply messaging for both intra- and inter-application, object-level communication. Broker-less: messages are transmitted directly between eBus applications. There is no message broker (i.e. server) in between. Type+topic addressing: eBus clients subscribe to a message class (type) and message topic, providing stronger typing than just topic-based subscriptions. Object-level communication:... -
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Linpac
Amateur Radio AX.25 chat and PBBS program using Linux's AX.25 stack
A modular console-oriented amateur radio AX.25 keyboard to keyboard chat and PBBS program using Linux's AX.25 stack. Includes support for multiple concurrent connected sessions, a unconnected (UI) message screen, and an automated packet message client -
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OpenClinic GA
Open Source Integrated Hospital Information Management System
OpenClinic GA is an open source integrated hospital information management system covering management of administrative, financial, clinical, lab, x-ray, pharmacy, meals distribution and other data. Extensive statistical and reporting capabilities. OpenClinic GA and OpenClinic GMAO are owned by Frank Verbeke, MD, PhD at Post-Factum BV (https://www.post-factum.be)
