bankapi - Secure Distributed Messaging Between Financial Institutions

•    Python

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BankAPI is a secure decentralized messaging system to send files/messages between banks and other types of financial institutions. There is a reference implementation of the protocol which can be used off-the-shelf, which is production grade quality and is not only for testing and demonstration, although it fulfils those two roles as well.

Atdl4net - FIXatdl for .NET

•    DotNet

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Atdl4net is a commercially supported open source implementation of FIXatdl, the FIX Protocol Algorithmic Trading Definition Language standard developed by FIX Protocol Limited (FPL). Atdl4net is developed in C# and is supported on both .NET 3.5 and .NET 4.0.

financial

Citadel

•    C

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Citadel is a collaboration suite (messaging and groupware). It provides support for Email, Calendaring/Scheduling, Address books, Bulletin boards, Mailing List Server, Instant Messaging, Wiki, Multiple domain support.

mail-server groupware bulletin-board mailing-list wiki instant-messaging smtp pop3

OpenMAMA - Open Middleware Agnostic Messaging API

•    C

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OpenMAMA Project provides a vendor neutral integration layer for a variety of message oriented middleware systems and messaging protocols. It enables an application to employ a range or middleware systems simultaneously or switch between them at will while developing with a single open source API. Adding or changing the messaging stack does not require lengthy and expensive code changes.

middleware aqmp messaging

FIXtail

•    C

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An extended version of GNU tail, with features targeted primarily (though not exclusively) at bandwidth and latency analysis of Financial Information eXchange (FIX) protocol log files.

SlimFIX

•    Java

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SlimFIX is a pure Java implementation of Financial Information Exchange (FIX) Protocol.

LibTML Messaging Suite - Network Messaging Library in C++

•    C++

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TML Messaging Suite is a network messaging library for rapid development of extensible and scalable interfaces. Based on the peer to peer standard protocol BEEP (Blocks Extensible Exchange Protocol), defined in RFC3080 and RFC3081 libTML is suitable for many use cases and communication patterns. The libtml-c project is a C++ implementation of a library with a C interface on top of the Vortex beepcore.

networking-library socket asynchronous networking communication library messaging

Hornetq - Enterprise messaging

•    Java

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HornetQ is the new ultra high performance enterprise grade messaging system from JBoss community. It is a multi-protocol, embeddable, very high performance, clustered, asynchronous messaging system. It offers server replication and automatic client failover to eliminate lost or duplicated messages in case of server failure. It also provides a comprehensive management API to manage & monitor servers.

messaging jmx jms stomp middleware message-queue

ruby-mqtt - Pure Ruby gem that implements the MQTT protocol, a lightweight protocol for publish/subscribe messaging

•    Ruby

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Pure Ruby gem that implements the MQTT protocol, a lightweight protocol for publish/subscribe messaging. Also includes a class for parsing and generating MQTT-SN packets.

mqtt rubygems

James - Enterprise Mail Server

•    Java

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James (a.k.a Java Apache Mail Enterprise Server) is a 100% pure Java SMTP and POP3 Mail server, and NNTP News server designed to be a complete and portable enterprise mail/messaging engine solution based on currently available open messaging protocols.

mail-server email-server enterprise mailing-list smtp lmtp pop3 nntp imap mta mail-delivery-agent

gorush - A push notification server written in Go (Golang).

•    Go

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A push notification micro server using Gin framework written in Go (Golang).

push-notification ios-notification notification-server android gcm gorush-server apns ios-alert-payload ios messaging pub-sub message-queue

hangups - the first third-party instant messaging client for Google Hangouts

•    Python

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hangups is the first third-party instant messaging client for Google Hangouts. It includes both a Python library and a reference client with a text-based user interface. Unlike its predecessor Google Talk, Hangouts uses a proprietary, non-interoperable protocol. hangups is implemented by reverse-engineering this protocol, which allows it to support features like group messaging that aren't available in clients that connect via XMPP.

asyncio python-3 chat google-hangouts

Thruway - PHP Client and Router Library for Autobahn and WAMP (Web Application Messaging Protocol) for Real-Time Application Messaging

•    PHP

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Thruway is an open source client and router implementation of WAMP (Web Application Messaging Protocol), for PHP. Thruway uses an event-driven, non-blocking I/O model (reactphp), perfect for modern real-time applications. Thruway is only supported on PHP 5.6 and up.

Rapid Asynchronous Messaging Protocol

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R.A.M.P. The Rapid Asynchronous Messaging Protocol is used for defining cross language, cross platform, message based protocols. You define the protocol in XML, RAMP will generate the socket level code in the language of your choice.

Themis - Crypto library for storage and messaging for ObjC, Android, C++, JS, Python, Ruby and PHP

•    C

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Themis is open-source high-level cryptographic services library for mobile and server platforms, providing secure messaging and secure data storage. Themis provides three important cryptographic services Secure messaging, Secure session and Secure storage.

secure-messaging secure-session secure-storage cryptography security library

StockSharp - Algorithmic trading and quantitative trading open source platform to develop trading robots (stock markets, forex, bitcoins and options)

•    CSharp

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StockSharp (shortly S#) – are free set of programs for trading at any markets of the world (American, European, Asian, Russian, stocks, futures, options, Bitcoins, forex, etc.). You will be able to trade manually or automated trading (algorithmic trading robots, conventional or HFT).Available connections: FIX/FAST, LMAX, Rithmic, Fusion/Blackwood, Interactive Brokers, OpenECry, Sterling, IQFeed, ITCH, FXCM, QuantHouse, E*Trade, BTCE, BitStamp and many other. Any broker or partner broker (benefits).

stocksharp hft trading-strategies trading-robots trading-platform algorithmic-trading-engine forex bitcoins c-sharp broker markets nasdaq quantitative-finance trading fixprotocol finance hft-trading iqfeed interactive-brokers fxcm bitcoin

FIX# - A FIX Protocol Engine

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This is an engine for the FIX protocol to be written entirely in .NET. It is inspired by our experiences QuickFIX, both good and bad.

Open-Transactions-old - Open-Transactions democratizes financial and monetary actions

•    C++

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The Open-Transactions project is a collaborative effort to develop a robust, commercial-grade, fully-featured, free-software toolkit implementing the OTX protocol as well as a full-strength financial cryptography library, API, CLI, and prototype server. The project is managed by a worldwide community of volunteers that use the Internet to communicate, plan, and develop the Open-Transactions toolkit and its related documentation. Open-Transactions democratizes financial and monetary actions. You can use it for issuing currencies/stock, paying dividends, creating asset accounts, sending/receiving digital cash, writing/depositing cheques, cashier's cheques, creating basket currencies, trading on markets, scripting custom agreements, recurring payments, escrow, etc.

QuickFIX

•    Ruby

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QuickFIX is the worlds first Open Source C++ FIX (Financial Information eXchange) engine, helping financial institutions easily integrate with each other. The SVN repository is now locked. Latest code is hosted at github. https://github.com/quickfix/quickfix

ripple-client - A UI for the Ripple payment network built using web technologies

•    Javascript

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The Ripple Trade client is an open-source GUI for the Ripple network that facilitates the peer-to-peer exchange of any store of value. It’s the only platform where you can trade between stores of value spanning fiat, cryptocurrencies, commodities, and unusual assets like pre-1965 silver dimes.Ripple Labs is the core team behind the project. For more information on the Ripple protocol, please visit our wiki.