Showing 2948 open source projects for "open core"

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  • 1
    smtp4dev

    smtp4dev

    The fake smtp email server for development and testing

    smtp4dev - the fake SMTP email server for development and testing. A dummy SMTP server for Windows, Linux, Mac OS-X (and maybe elsewhere where .NET Core is available). Lets you test your application without spamming your real customers.
    Downloads: 20 This Week
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  • 2
    Extism

    Extism

    The Universal Plug-in System. Extend anything with WebAssembly

    Extism is a plug-in system for everyone. We've carefully designed it to be flexible, fitting into codebases of all shapes and sizes, but opinionated enough so that things Just Work™ the way they should. Extism's goal is to make all software programmable. You can use Extism in your codebase, regardless of the programming language. We support several environments through our official Host SDKs, and are adding more language support all the time. A plug-in system is software that enables your...
    Downloads: 12 This Week
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  • 3
    Lean 4

    Lean 4

    Lean 4 programming language and theorem prover

    Lean 4 is both a programming language and an interactive theorem prover, designed to support formal reasoning while also functioning as an efficient and extensible general-purpose language. The project serves researchers, mathematicians, programmers, and formal methods users who need a system for writing machine-checked proofs as well as executable programs in the same environment. One of its defining characteristics is its emphasis on extensibility, since Lean 4 is built to allow users to...
    Downloads: 68 This Week
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  • 4
    Vitess

    Vitess

    Vitess is a database clustering system for horizontal scaling of MySQL

    Vitess is a database clustering system for horizontal scaling of MySQL through generalized sharding. By encapsulating shard-routing logic, Vitess allows application code and database queries to remain agnostic to the distribution of data onto multiple shards. With Vitess, you can even split and merge shards as your needs grow, with an atomic cutover step that takes only a few seconds. Vitess has been a core component of YouTube's database infrastructure since 2011, and has grown to encompass...
    Downloads: 1 This Week
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  • 5
    Flowise

    Flowise

    Drag & drop UI to build your customized LLM flow

    Open source UI visual tool to build your customized LLM flow using LangchainJS, written in Node Typescript/Javascript. Conversational agent for a chat model which utilizes chat-specific prompts and buffer memory. Open source is the core of Flowise, and it will always be free for commercial and personal usage. Flowise support different environment variables to configure your instance.
    Downloads: 33 This Week
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  • 6
    MusicFreePlugins

    MusicFreePlugins

    MusicFreePlayPlugin

    The MusicFreePluginsc project is a collection and framework for plugins that extend the functionality of the MusicFree ecosystem by providing access to various music sources and features. It defines a standardized interface for plugin development, allowing contributors to implement features such as search, playback, and metadata retrieval. The system is designed to be modular, enabling users to install, update, and manage plugins independently of the core application. It supports multiple...
    Downloads: 2 This Week
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  • 7
    sectorlisp

    sectorlisp

    Bootstrapping LISP in a Boot Sector

    The sectorlisp project is a minimal implementation of the Lisp programming language designed to fit within extremely constrained environments. It is engineered to run in very small memory footprints, making it suitable for educational purposes and experimentation with low-level programming concepts. The project demonstrates how a functional programming language can be implemented with minimal resources while still retaining core features. It focuses on simplicity, providing a stripped-down...
    Downloads: 2 This Week
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  • 8
    FluentValidation

    FluentValidation

    .NET validation library for building strongly-typed validation rules

    FluentValidation is a popular .NET library offering a fluent, expressive interface for building strongly-typed validation rules. It supports modern .NET runtimes including .NET 8+, and integrates smoothly into .NET Core, Blazor, and other ecosystems. FluentValidation has adopted the Code of Conduct defined by the Contributor Covenant to clarify expected behavior in our community. For more information see the .NET Foundation Code of Conduct. A validation library for .NET that uses a fluent...
    Downloads: 2 This Week
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  • 9
    openFrameworks

    openFrameworks

    Cross platform toolkit for creative coding in C++

    ...You should definitely take a look in there; for example, if you are on OSX, read the osx.md. apps and examples are where projects go -- examples contain a variety of tasks that show you how to use OF, and apps is where your own projects will go. libs contain the libraries that OF uses, including the open frameworks core itself. addons are for additional functionality that's not part of the core. export is for DLLs and dylibs that need to be put in each compiled project. The scripts folder has templates and small scripts for automating OF per platform. project generator is a GUI-based tool for doing new projects - this folder is only there in packaged releases.
    Downloads: 4 This Week
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  • 10
    BizHawk

    BizHawk

    BizHawk is a multi-system emulator written in C#

    A multi-system emulator written in C#. As well as quality-of-life features for casual players, it also has recording/playback and debugging tools, making it the first choice for TASers (Tool-Assisted Speedrunners). Screenshotting and recording audio + video to file. Firmware management, input, framerate, and more in a HUD over the game. Rebindable hotkeys for controlling the frontend (keyboard+mouse+gamepad). A comprehensive input mapper for the emulated gamepads and other peripherals....
    Downloads: 66 This Week
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  • 11
    bitcoinj

    bitcoinj

    A library for working with Bitcoin

    bitcoinj is a library for working with the Bitcoin protocol. It can maintain a wallet, send/receive transactions without needing a local copy of Bitcoin Core and has many other advanced features. It's implemented in Java but can be used from any JVM compatible language, examples in Python and JavaScript are included. Highly optimized lightweight simplified payment verification (SPV) mode. In this mode, only a small part of the blockchain is downloaded, making bitcoin suitable for usage on...
    Downloads: 8 This Week
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  • 12
    OpenMed

    OpenMed

    Open source healthcare AI

    OpenMed is an open-source healthcare AI and medical NLP toolkit designed to turn clinical text into structured insights using transformer-based models and production-oriented interfaces. Its core purpose is to provide specialized medical entity extraction, PII detection and de-identification, assertion-aware analysis, and related healthcare text processing capabilities without locking users into a proprietary platform.
    Downloads: 49 This Week
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  • 13
    MusicFreeDesktop

    MusicFreeDesktop

    Plug-in, customized, ad-free free music player

    The MusicFreeDesktop project is a desktop version of the MusicFree ecosystem, providing a plugin-driven music player for Windows, macOS, and Linux environments. It retains the same philosophy as its mobile counterpart, acting as a core player while delegating content sourcing and advanced features to external plugins. The application is built using modern web technologies and offers a customizable interface with support for themes and layout adjustments. It enables users to search, stream,...
    Downloads: 63 This Week
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  • 14
    VibeTensor

    VibeTensor

    Our first fully AI generated deep learning system

    VibeTensor is a groundbreaking open-source research system software stack for deep learning that was uniquely generated almost entirely by AI coding agents under guided human supervision, demonstrating a new frontier in AI-assisted software engineering. It implements a PyTorch-style eager tensor library with a modern C++20 core that supports both CPU and CUDA backends, giving it the ability to manage tensors, automatic differentiation (autograd), and complex computation flows similar to mainstream frameworks. ...
    Downloads: 0 This Week
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  • 15
    Applio

    Applio

    A simple, high-quality voice conversion tool focused on ease of use

    Applio is a high-quality voice conversion toolkit designed to make modern RVC/VITS-based voice cloning accessible to non-experts. It focuses strongly on ease of use: installation scripts for Windows, Linux, and macOS set up dependencies and then launch a browser-based Gradio interface. Within that interface, users can train and run voice conversion models for tasks like singing conversion, speech-to-speech transformation, and voice cloning. The project is structured to be flexible through...
    Downloads: 87 This Week
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  • 16
    frugally-deep

    frugally-deep

    A lightweight header-only library for using Keras (TensorFlow) models

    Use Keras models in C++ with ease. A lightweight header-only library for using Keras (TensorFlow) models in C++. Works out-of-the-box also when compiled into a 32-bit executable. (Of course, 64 bit is fine too.) Avoids temporarily allocating (potentially large chunks of) additional RAM during convolutions (by not materializing the im2col input matrix). Utterly ignores even the most powerful GPU in your system and uses only one CPU core per prediction. Quite fast on one CPU core, and you can...
    Downloads: 5 This Week
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  • 17
    Beam

    Beam

    A type-safe, non-TH Haskell SQL library and ORM

    Beam is a Haskell interface to relational databases. Beam uses the Haskell type system to verify that queries are type-safe before sending them to the database server. Queries are written in a straightforward, natural monadic syntax. Combinators are provided for all standard SQL92 features, and a significant subset of SQL99, SQL2003, and SQL2008 features. Beam is standards-compliant but not naive. We recognize that different database backends provide different guarantees, syntaxes, and...
    Downloads: 5 This Week
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  • 18
    Unison

    Unison

    A friendly programming language from the future

    Unison is an open source functional programming language based on a simple idea with big implications: code is content-addressed and immutable. Unison’s core idea is that code is immutable and identified by its content. This lets us reimagine many aspects of how a programming language works. We simplify codebase management, Unison has no builds, no dependency conflicts, and renaming things is trivial.
    Downloads: 4 This Week
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  • 19
    Steamodded

    Steamodded

    A Balatro Modding Framework

    Steamodded, also known as Steamodded, is a modding framework and loader specifically designed for the game Balatro, enabling users to inject and manage custom modifications. Built using Lua, it provides a flexible and extensible environment that allows developers to create new gameplay features, mechanics, and enhancements. The framework includes a variety of APIs that simplify the process of interacting with the game’s internal systems, making mod development more accessible. It is...
    Downloads: 58 This Week
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  • 20
    Megatron-LM

    Megatron-LM

    Ongoing research training transformer models at scale

    Megatron-LM is a GPU-optimized deep learning framework from NVIDIA designed to train extremely large transformer-based language models efficiently at scale. The repository provides both a reference training implementation and Megatron Core, a composable library of high-performance building blocks for custom large-model pipelines. It supports advanced parallelism strategies including tensor, pipeline, data, expert, and context parallelism, enabling training across massive multi-GPU and...
    Downloads: 3 This Week
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  • 21
    Koa

    Koa

    Expressive middleware for node.js using ES2017 async functions

    Koa is a minimal, expressive web framework for Node.js created by the team behind Express, built around modern JavaScript features. Its middleware system uses async functions and an “onion” execution model, producing clean, sequential control flow for request/response handling. Koa keeps the core small and unopinionated—there’s no built-in router or templating—so developers compose only the pieces they need. The framework exposes a refined Context object to standardize request and response...
    Downloads: 7 This Week
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  • 22
    3X-UI

    3X-UI

    Xray panel supporting multi-protocol multi-user expire day

    ...It supports multi‑protocol configurations (like VMess, VLESS, Trojan, Shadowsocks, WireGuard), offers traffic and user limits, SSL management, multilingual support, and integrates Telegram notifications for system events. Advanced, open-source web-based control panel designed for managing Xray-core server. It offers a user-friendly interface for configuring and monitoring various VPN and proxy protocols. As an enhanced fork of the original X-UI project, 3X-UI provides improved stability, broader protocol support, and additional features.
    Downloads: 50 This Week
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  • 23
    Clean Architecture Solution Template

    Clean Architecture Solution Template

    Clean Architecture Solution Template for .NET 6

    This is a solution template for creating a Single Page App (SPA) with Angular and ASP.NET Core following the principles of Clean Architecture. Create a new project based on this template by clicking the above Use this template button or by installing and running the associated NuGet package (see Getting Started for full details). The template is configured to use an in-memory database by default. This ensures that all users will be able to run the solution without needing to set up...
    Downloads: 3 This Week
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  • 24
    deck.gl

    deck.gl

    WebGL2 powered visualization framework

    deck.gl is designed to simplify high-performance, WebGL-based visualization of large data sets. Users can quickly get impressive visual results with minimal effort by composing existing layers, or leveraging deck.gl's extensible architecture to address customer needs. deck.gl maps data (usually an array of JSON objects) into a stack of visual layers - e.g. icons, polygons, texts; and look at them with views: e.g. map, first-person, orthographic. deck.gl handles a number of challenges out of...
    Downloads: 3 This Week
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  • 25
    Amazon SSM Agent

    Amazon SSM Agent

    An agent to enable remote management of your EC2 instances

    AWS Systems Manager is a secure end-to-end management solution for hybrid cloud environments. AWS Systems Manager is the operations hub for your AWS applications and resources, and is broken into four core feature groups. Aggregate data in a single console and gain actionable insights across AWS services such as Amazon CloudWatch, AWS CloudTrail, and AWS Config, as well as third-party tools. Leverage operational data to easily manage applications and identify issues quickly across associated...
    Downloads: 7 This Week
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