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

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  • 1
    The Falcon Web Framework

    The Falcon Web Framework

    The no-nonsense REST API and microservices framework

    Falcon is a minimalist WSGI library for building speedy web APIs and app backends. We like to think of Falcon as the Dieter Rams of web frameworks. When it comes to building HTTP APIs, other frameworks weigh you down with tons of dependencies and unnecessary abstractions. Falcon cuts to the chase with a clean design that embraces HTTP and the REST architectural style. Highly optimized, extensible code base. Easy access to headers and bodies through request and response objects. DRY request processing via middleware components and hooks. Strict adherence to RFCs. Idiomatic HTTP error responses. Straightforward exception handling. Snappy testing with WSGI/ASGI helpers and mocks. CPython 3.5+ and PyPy 3.5+ support. No reliance on magic globals for routing and state management. Stable interfaces with an emphasis on backward compatibility. Simple API modeling through centralized RESTful routing. Highly-optimized, extensible code base.
    Downloads: 0 This Week
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  • 2
    A Unix desktop environment, using multi-processing as the principle method of program partitioning and built around the everything-is-a-file assumption, with scripting using the programming language Haskell.
    Downloads: 0 This Week
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  • 3
    finstall is a modern graphical installer for the FreeBSD operating system.
    Downloads: 0 This Week
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  • 4
    Top Engine the Semantic Web Engine for the Enterprise. Top Engine is a Business Rule Engine that utilize OWL DL ontologies for vocabulary primitive to write rules on top of ontology. Top Engine support forward and backward chaining with truth maintenance
    Downloads: 0 This Week
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  • 5
    TorchGAN

    TorchGAN

    Research Framework for easy and efficient training of GANs

    The torchgan package consists of various generative adversarial networks and utilities that have been found useful in training them. This package provides an easy-to-use API which can be used to train popular GANs as well as develop newer variants. The core idea behind this project is to facilitate easy and rapid generative adversarial model research. TorchGAN is a Pytorch-based framework for designing and developing Generative Adversarial Networks. This framework has been designed to provide building blocks for popular GANs and also to allow customization for cutting-edge research. Using TorchGAN's modular structure allows.
    Downloads: 0 This Week
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  • 6
    TorchQuantum

    TorchQuantum

    A PyTorch-based framework for Quantum Classical Simulation

    A PyTorch-based framework for Quantum Classical Simulation, Quantum Machine Learning, Quantum Neural Networks, Parameterized Quantum Circuits with support for easy deployments on real quantum computers. Researchers on quantum algorithm design, parameterized quantum circuit training, quantum optimal control, quantum machine learning, and quantum neural networks. Dynamic computation graph, automatic gradient computation, fast GPU support, batch model terrorized processing.
    Downloads: 0 This Week
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  • 7
    Trellis AI

    Trellis AI

    All-in-one AI framework & toolkit for Claude Code & Cursor

    Trellis is an advanced workflow and agent orchestration framework designed for building, managing, and scaling intelligent applications that coordinate numerous autonomous components. At its core, Trellis lets developers define units of work — called tasks or agents — and compose them into rich workflows that can operate with concurrency, conditional logic, and dynamic branching, all without sacrificing readability or control. It emphasizes modular design, encouraging users to encapsulate logic into reusable pieces that can be tested, versioned, and reused across projects. Trellis also includes tooling for monitoring, scheduling, and tracing the execution of complex multi-step jobs, helping teams maintain visibility into how work progresses and where bottlenecks emerge. The platform can integrate with external services, databases, and model endpoints, making it suitable for automation, ETL pipelines, AI-driven processes, and business logic orchestration.
    Downloads: 0 This Week
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  • 8
    An Open Source code base that will be used to develop a 3Dapplication development browser plugin and runtime owned by FunTrench.
    Downloads: 0 This Week
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  • 9
    Trigger Happy

    Trigger Happy

    Automate the exchanges of the data between applications

    Automate the exchanges of the data between the applications and services you use on the web. Make Twitter talk to Mastodon, make Github talk to Mattermost, store your favorite tweets by creating notes in Evernote, follow RSS feeds and post each news in Wallabag, Pocket or Evernote. The possibilities are too numerous to name all of them, but with that project you won't have to raise your little finger at all: automate everything and make your life easier. And last but not least, as this is your project, all the credentials you used to give to IFTTT and consorts, are now safe in your hands.
    Downloads: 0 This Week
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  • 10
    TurboGears

    TurboGears

    Python web framework with full-stack layer

    TurboGears is a hybrid web framework able to act both as a Full Stack framework or as a Microframework. TurboGears helps you get going fast and gets out of your way when you want it! TurboGears can be used both as a full stack framework or as a microframework in single-file mode. TurboGears 2 is built on top of the experience of several next-generation web frameworks including TurboGears 1 (of course), Django, and Rails. All of these frameworks had limitations that frustrated us, and TG2 was built as an answer to that frustration. TurboGears can scale to a full stack solution for more complex applications using TurboGears devtools. The newly created myproj application can be started with the Gearbox toolchain. A powerful and flexible Object Relational Mapper (ORM) with real multi-database support. Built-in extensibility Pluggable Applications and standard WSGI components. Designer-friendly template system is great for programmers.
    Downloads: 0 This Week
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  • 11
    TurboGears 2
    TurboGears 2 is a web framework, but unlike some of its competitors, it's not a monolithic unit, it's a collection of libraries, WSGI components, and web development tools that works well together and is configured to provide a great out of the box.
    Downloads: 0 This Week
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  • 12
    TurboGears widget plugins' source repository. If you made a TurboGears widget, mail me to get permission to put your TurboGears widget here. Download TurboGears widgets from http://www.turbogears.org/cogbin/
    Downloads: 0 This Week
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  • 13
    TuxCap Games Framework
    The TuxCap Games Framework is a GNU/Linux and Mac OSX port of the PopCap Games Framework used for 2D game development. It comes with PyCap Python bindings, a fast 2D physics engine, a particle engine, widgets and many documented examples.
    Downloads: 0 This Week
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  • 14
    Twint

    Twint

    An advanced Twitter scraping & OSINT tool written in Python

    Twint is an advanced open-source Twitter scraping and OSINT tool written in Python that extracts tweets, user data, followers, likes, and more—without relying on Twitter’s API—making it highly useful for researchers, analysts, and hobbyists who want to bypass rate limits and access public Twitter data.
    Downloads: 0 This Week
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  • 15
    Ultima Realidad - RPG Development Engine
    Roll Playing Game development environment, made with PyGame, Ogre, wxPython.
    Downloads: 0 This Week
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  • 16
    Unicorn

    Unicorn

    The magical reactive component framework for Django

    Quickly add in simple interactions to regular Django templates without learning a new templating language. Stop fighting with a new JavaScript build tool and separate process to use yet another frontend framework. Building a feature-rich API is complicated. Skip creating a bunch of serializers and just use Django. Unicorn progressively enhances a normal Django view, so the initial render of components is fast and great for SEO. The end result is that you can focus on writing regular Django templates and Python classes without needing to switch to another language or build unnecessary plumbing. Best of all, the JavaScript portion is a paltry. Unicorn is a reactive component framework that progressively enhances a normal Django view, makes AJAX calls in the background, and dynamically updates the DOM. It seamlessly extends Django past its server-side framework roots without giving up all of its niceties or re-building your website.
    Downloads: 0 This Week
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  • 17
    UnionML

    UnionML

    Build and deploy machine learning microservices

    Creating ML apps should be simple and frictionless. UnionML is an open-source Python framework built on top of Flyte™, unifying the complex ecosystem of ML tools into a single interface. Combine the tools that you love using a simple, standardized API so you can stop writing so much boilerplate and focus on what matters: the data and the models that learn from them. Fit the rich ecosystem of tools and frameworks into a common protocol for machine learning. Using industry-standard machine learning methods, implement endpoints for fetching data, training models, serving predictions (and much more) to write a complete ML stack in one place. Data science, ML engineering, and MLOps practitioners can all gather around UnionML apps as a way of defining a single source of truth about your ML system’s behavior. This helps you maintain consistent code across your ML stack, from training to prediction logic.
    Downloads: 0 This Week
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  • 18
    Universal Data Exchange (UDEX) Server
    Universal Data Exchange server is a barebone modular server.
    Downloads: 0 This Week
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  • 19
    Unsloth-MLX

    Unsloth-MLX

    Bringing the Unsloth experience to Mac users via Apple's MLX framework

    Unsloth-MLX offers developers the power of Unsloth’s efficient large language model fine-tuning experience on Apple Silicon Macs by wrapping Apple’s native MLX framework with an API fully compatible with Unsloth workflows. This project removes traditional barriers that prevent Mac users from prototyping and experimenting with LLM training locally by allowing the same code used in cloud GPU environments to run on M-series hardware, improving workflow continuity and reducing iteration costs. It supports loading and training Hugging Face models with fine-tuning strategies like SFT, DPO, ORPO, and GRPO and even handles exporting models to formats like GGUF for downstream use, although some limitations apply with quantized models. Users can write and test training pipelines directly on macOS before scaling up, accelerating development cycles and lowering entry barriers for model refinement.
    Downloads: 0 This Week
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  • 20
    Uraga aims to create a CPAN like package installation and management system for Python. Uraga will allow users to download and install Python packages from the Internet by using simple commands. .
    Downloads: 0 This Week
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  • 21
    V2RayCloudSpider

    V2RayCloudSpider

    V2RayCloudSpider

    V2RSS is an "ecological mining machine" that can perform vertical mining on global providers based on the SSPanel-Uim framework; it can generate bottom-up "aggregation collection" tasks for mainstream protocol headers; it can self-digest and Compared with proxypool , the output is purer and more reliable proxy nodes; it has powerful production features such as self-discovery and service self-healing.
    Downloads: 0 This Week
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  • 22
    The Virtual Commons (http://commons.asu.edu) is an open software initiative devoted to computational experiments on collective action and resource governance and funded by Arizona State University's Center for Behavior, Institutions, and the Environment (http://cbie.asu.edu). NOTE: we've moved our development to GitHub at https://github.com/virtualcommons - please look for the latest versions there.
    Downloads: 0 This Week
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  • 23
    Voodoo-Mock is a framework for `mock objects' based unit testing in C++. Written in perl, Voodoo-Mock parses C++ code, and generates redirection and mock classes. Voodoo-Mock can be used with test suite frameworks such as CXXTest or CPPUnit. repo now stored @github: https://github.com/shlomimatichin/Voodoo-Mock
    Downloads: 0 This Week
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  • 24
    WALKOFF

    WALKOFF

    A flexible, easy to use, automation framework

    Faster, smarter, cheaper operations through automation. WALKOFF puts the tools in your hands to easily automate the tedious repetitive tasks dragging your operations down. Act smarter with WALKOFF by automatically gathering data, analyzing data, or visualizing data customized to your requirements. Act faster with WALKOFF by integrating the capabilities you already own to dynamically respond on your terms to your fast-moving environment. Drag and drop workflow editor. Sharable apps and workflows. Deploy on Windows or Linux. Python 2.7 and 3.4+. Scale to your needs. Plug-and-play integration of almost anything with easy-to-develop apps. Send workflow data to custom visual interfaces to act with confidence. Harness the power of automation on your terms. An active community is essential for our success. Help us to develop and promote a common integration format that would enable the seamless deployment of WALKOFF apps across participating platforms.
    Downloads: 0 This Week
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  • 25
    The Waldi Tile Engine is a object-oriented framework for writing rectangular-tile-based games using Python and PyGame.
    Downloads: 0 This Week
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