Browse free open source Java System Software and projects below. Use the toggles on the left to filter open source Java System Software by OS, license, language, programming language, and project status.

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
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  • Find Hidden Risks in Windows Task Scheduler Icon
    Find Hidden Risks in Windows Task Scheduler

    Free diagnostic script reveals configuration issues, error patterns, and security risks. Instant HTML report.

    Windows Task Scheduler might be hiding critical failures. Download the free JAMS diagnostic tool to uncover problems before they impact production—get a color-coded risk report with clear remediation steps in minutes.
    Download Free Tool
  • 1
    LocoNet over TCP
    Client-server based software that talks to Digitrax LocoNet. TCP server talks through a hardware interface (e.g. LocoBuffer) to LocoNet. (User interface) clients talk to that server.
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    Downloads: 53 This Week
    Last Update:
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  • 2
    Software originally realised by the Grid research project Akogrimo (http:/www.mobilegrids.org) working on integrating network capabilities with Grid Middleware. Selected topics are Context Management, SIP/SOAP integration, Semantic workflows, ...
    Downloads: 0 This Week
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  • 3
    Need extra computing power? Use other people's computers! Rent out your computer when you are not using it! Aspen provides secure, fault-tolerant, platform-independent micropayment-based distributed computing.
    Downloads: 0 This Week
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  • 4
    DB Web Admin Provides access to your databases through a web interface. It gives users visibility into their SQL Server database instances. DBWA shows users Currently running SQL Queries, Historic Queries, and Fragmented Indexes. DBWA also allows users to kill currently running queries or run their own SQL queries. DBWA is implemented in ASP.NET MVC using C#. Previous Versions supported Oracle(PL/SQL and JSP), MS SQLServer (ASP), and MySQL/ODBC (C#.NET) versions.
    Downloads: 0 This Week
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  • AI-generated apps that pass security review Icon
    AI-generated apps that pass security review

    Stop waiting on engineering. Build production-ready internal tools with AI—on your company data, in your cloud.

    Retool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
    Try Retool free
  • 5
    java-based complete Agent (Artificial Intelligence) Framework with all the features you might expect in an Agent Framework: Mobility, Autonomy, Distributed communication, Agents can be written in Java, Jython, or Beanshell.
    Downloads: 0 This Week
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  • 6
    HashSum is a .NET port from GNU's md5sum and sha1sum. It supports: hash algorithm selection between MD5 and SHA1 (more could be added later) and compatibility between HashSum and GNU's checksum file format
    Downloads: 0 This Week
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  • 7
    Loma Larga

    Loma Larga

    Lomalarga is a VPN-like service based on SSH and Linux.

    Lomalarga is a port forwarding (VPN-like) service based on SSH & Linux. Based entirely on open source. The client is written in C# and the administration is based on Linux/lighttpd/PostgreSQL/PHP, with the UI written with Google Web Toolkit.
    Downloads: 0 This Week
    Last Update:
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  • 8
    MaxMind GeoIP is a set of APIs for looking up the location of an IP address, including the country, region, city, latitude, and longitude. Free GeoLite databases are available at http://www.maxmind.com/app/geolitecity
    Downloads: 0 This Week
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  • 9
    Open, fast, robust grid for distributing computing, processes etc. A great alternative to overpriced commercial products such as DataSynapse. Not constrained by standards: contribute to invent new grid computing.
    Downloads: 0 This Week
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  • AI-powered service management for IT and enterprise teams Icon
    AI-powered service management for IT and enterprise teams

    Enterprise-grade ITSM, for every business

    Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity. Maximize operational efficiency with refreshingly simple, AI-powered Freshservice.
    Try it Free
  • 10
    RandService is a Web Service which supplies pseudo- or true- random numbers through JAX-RPC API. Any random number generators can be used behind this Web Service.
    Downloads: 0 This Week
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  • 11
    SmartSlog (Smart Space Ontology) is a software/application development kit (SDK or ADK) for programming Smart-M3 agents (Knowledge Processors, KPs) that consume/produce smart space content according with its high-level ontological representation. SmartSlog applies the code generation approach: given an OWL ontology description, the ontology programming library is produced. The latter provides API to access the smart space via a Smart-M3 Semantic Information Broker (SIB) and data structures and functions to represent and maintain locally in KP code all ontology classes, relations, properties, and individuals. Since 2012 the project is supported by grant KA179 of Karelia ENPI programme, http://kareliaenpi.eu/ More information about project: http://oss.fruct.org/wiki/SmartSlog Smart-M3 on Wikipedia: http://en.wikipedia.org/wiki/Smart-M3
    Downloads: 0 This Week
    Last Update:
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  • 12
    Syncoco
    Syncoco is an offline file synchronization tool. It uses a medium like an USB stick, and can handle much larger file systems than the size of the medium, since only changes to the file systems are transferred.
    Downloads: 0 This Week
    Last Update:
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