| 1 | VowpalWabbit/vowpal_wabbitbandits | Vowpal Wabbit is a machine learning system which pushes the frontier of machine learning with techniques such as online, hashing, allreduce, reductions, learning2search, active, and interactive learning. | first_party_docstop10 | Source ↗ |
| 3 | fidelity/mabwiserbandits | MABWiser: Contextual Multi-Armed Bandits Library | first_party_docstop10 | Source ↗ |
| — | david-cortes/contextualbanditsbandits | Python implementations of contextual bandits algorithms | first_party_docscensus | Source ↗ |
| 7 | st-tech/zr-obpbandits | Open Bandit Pipeline: a python library for bandit algorithms and off-policy evaluation | first_party_docstop10 | Source ↗ |
| — | ray-project/raybandits | Ray is an AI compute engine. Ray consists of a core distributed runtime and a set of AI Libraries for accelerating ML workloads. | observed_behaviorcensus | Source ↗ |
| — | tensorflow/agentsbandits | TF-Agents: A reliable, scalable and easy to use TensorFlow library for Contextual Bandits and Reinforcement Learning. | observed_behaviorcensus | Source ↗ |
| — | motiwari/BanditPAMbandits | BanditPAM C++ implementation and Python package | observed_behaviorexcluded | Source ↗ |
| — | SMPyBandits/SMPyBanditsbandits | 🔬 Research Framework for Single and Multi-Players 🎰 Multi-Arms Bandits (MAB) Algorithms, implementing all the state-of-the-art algorithms for single-player (UCB, KL-UCB, Thompson...) and multi-player (MusicalChair, MEGA, rhoRand, MCTop/R... | observed_behaviorcensus | Source ↗ |
| — | bgalbraith/banditsbandits | Python library for Multi-Armed Bandits | observed_behaviorexcluded | Source ↗ |
| — | johnmyleswhite/BanditsBookbandits | Code for my book on Multi-Armed Bandit Algorithms | secondaryexcluded | Source ↗ |
| — | alison-carrera/onnbandits | Online Deep Learning: Learning Deep Neural Networks on the Fly / Non-linear Contextual Bandit Algorithm (ONN_THS) | observed_behaviorcensus | Source ↗ |
| 2 | meta-pytorch/botorchbayesian_preference | Bayesian optimization in PyTorch | first_party_docstop10 | Source ↗ |
| 4 | facebook/Axbayesian_preference | Adaptive Experimentation Platform | first_party_docstop10 | Source ↗ |
| 5 | lucasmaystre/choixbayesian_preference | Inference algorithms for models based on Luce's choice axiom | first_party_docstop10 | Source ↗ |
| 6 | pymc-devs/pymcbayesian_preference | Bayesian Modeling and Probabilistic Programming in Python | first_party_docstop10 | Source ↗ |
| — | stan-dev/stanbayesian_preference | Stan development repository. The master branch contains the current release. The develop branch contains the latest stable development. See the Developer Process Wiki for details. | observed_behaviorcensus | Source ↗ |
| — | stan-dev/cmdstanpybayesian_preference | CmdStanPy is a lightweight interface to Stan for Python users which provides the necessary objects and functions to compile a Stan program and fit the model to data using CmdStan. | observed_behaviorcensus | Source ↗ |
| — | scikit-optimize/scikit-optimizebayesian_preference | Sequential model-based optimization with a `scipy.optimize` interface | observed_behaviorexcluded | Source ↗ |
| — | optuna/optunabayesian_preference | A hyperparameter optimization framework | observed_behaviorcensus | Source ↗ |
| — | yuki-koyama/sequential-gallerybayesian_preference | Sequential Gallery for Interactive Visual Design Optimization [SIGGRAPH 2020] | observed_behaviorcensus | Source ↗ |
| — | sublee/trueskillbayesian_preference | An implementation of the TrueSkill rating system for Python | first_party_docsexcluded | Source ↗ |
| — | philihp/openskill.jsbayesian_preference | A faster, open-license alternative to Microsoft TrueSkill | observed_behaviorcensus | Source ↗ |
| — | hyperopt/hyperoptbayesian_preference | Distributed Asynchronous Hyperparameter Optimization in Python | observed_behaviorcensus | Source ↗ |
| — | automl/SMAC3bayesian_preference | SMAC3: A Versatile Bayesian Optimization Package for Hyperparameter Optimization | observed_behaviorcensus | Source ↗ |
| 10 | growthbook/growthbookexperimentation | Open Source Feature Flags, Experimentation, and Product Analytics | first_party_docstop10 | Source ↗ |
| — | Unleash/unleashexperimentation | Open-source feature management platform | first_party_docscensus | Source ↗ |
| — | Flagsmith/flagsmithexperimentation | Flagsmith is an open source feature flagging and remote config service. Self-host or use our hosted version at https://app.flagsmith.com. | observed_behaviorcensus | Source ↗ |
| — | PostHog/posthogexperimentation | :hedgehog: PostHog is the leading platform for building self-driving products. Our developer tools – AI observability, analytics, session replay, flags, experiments, error tracking, logs, and more – capture all the context agents need to... | first_party_docscensus | Source ↗ |
| — | Eppo-exp/eppo-multiplatformexperimentation | SDKs and platform artifacts to support Eppo Flagging. | observed_behaviorcensus | Source ↗ |
| — | facebookarchive/planoutexperimentation | PlanOut is a library and interpreter for designing online experiments. | first_party_docscensus | Source ↗ |
| — | intuit/wasabiexperimentation | Wasabi A/B Testing service is an open source project that is no longer under active development or being supported | observed_behaviorexcluded | Source ↗ |
| — | thomaspoignant/go-feature-flagexperimentation | GO Feature Flag is a simple, complete and lightweight self-hosted cloud native feature flag solution 100% Open Source — built on OpenFeature 🎛️ | observed_behaviorcensus | Source ↗ |
| — | open-feature/specexperimentation | OpenFeature specification | observed_behaviorcensus | Source ↗ |
| — | langfuse/langfusellm_eval_loop | 🪢 Open source AI engineering platform: LLM evals, observability, metrics, prompt management, playground, datasets. Integrates with OpenTelemetry, LangChain, OpenAI SDK, LiteLLM, and more. 🍊YC W23 | first_party_docscensus | Source ↗ |
| — | Arize-ai/phoenixllm_eval_loop | AI Observability & Evaluation | first_party_docsexcluded | Source ↗ |
| — | promptfoo/promptfoollm_eval_loop | Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simple declarative configs with command line and CI/CD integration. Used by OpenA... | observed_behaviorcensus | Source ↗ |
| — | confident-ai/deepevalllm_eval_loop | The LLM Evaluation Framework | observed_behaviorcensus | Source ↗ |
| — | openai/evalsllm_eval_loop | Evals is a framework for evaluating LLMs and LLM systems, and an open-source registry of benchmarks. | observed_behaviorcensus | Source ↗ |
| — | braintrustdata/autoevalsllm_eval_loop | AutoEvals is a tool for quickly and easily evaluating AI model outputs using best practices. | observed_behaviorcensus | Source ↗ |
| — | wandb/weavellm_eval_loop | Weave is a toolkit for developing AI-powered applications, built by Weights & Biases. | observed_behaviorcensus | Source ↗ |
| — | truera/trulensllm_eval_loop | Evaluation and Tracking for LLM Experiments and AI Agents | observed_behaviorcensus | Source ↗ |
| — | vibrantlabsai/ragasllm_eval_loop | Supercharge Your LLM Application Evaluations 🚀 | observed_behaviorcensus | Source ↗ |
| — | comet-ml/opikllm_eval_loop | Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards. | observed_behaviorcensus | Source ↗ |
| — | uptrain-ai/uptrainllm_eval_loop | UpTrain is an open-source unified platform to evaluate and improve Generative AI applications. We provide grades for 20+ preconfigured checks (covering language, code, embedding use-cases), perform root cause analysis on failure cases an... | observed_behaviorcensus | Source ↗ |
| — | benfred/implicitrecommender | Fast Python Collaborative Filtering for Implicit Feedback Datasets | first_party_docscensus | Source ↗ |
| 9 | lyst/lightfmrecommender | A Python implementation of LightFM, a hybrid recommendation algorithm. | first_party_docstop10 | Source ↗ |
| — | NicolasHug/Surpriserecommender | A Python scikit for building and analyzing recommender systems | observed_behaviorcensus | Source ↗ |
| — | RUCAIBox/RecBolerecommender | A unified, comprehensive and efficient recommendation library | observed_behaviorcensus | Source ↗ |
| — | recommenders-team/recommendersrecommender | Best Practices on Recommendation Systems | observed_behaviorcensus | Source ↗ |
| — | gorse-io/gorserecommender | AI powered open source recommender system engine supports classical/LLM rankers and multimodal content via embedding | observed_behaviorcensus | Source ↗ |
| — | lenskit/lkpyrecommender | Python recommendation toolkit | first_party_docscensus | Source ↗ |
| — | tensorflow/recommendersrecommender | TensorFlow Recommenders is a library for building recommender system models using TensorFlow. | observed_behaviorcensus | Source ↗ |
| — | NVIDIA-Merlin/Merlinrecommender | NVIDIA Merlin is an open source library providing end-to-end GPU-accelerated recommender systems, from feature engineering and preprocessing to training deep learning models and running inference in production. | observed_behaviorexcluded | Source ↗ |
| — | PreferredAI/cornacrecommender | A Comparative Framework for Multimodal Recommender Systems | observed_behaviorcensus | Source ↗ |
| — | ossf/scorecardasset_scoring | OpenSSF Scorecard - Security health metrics for Open Source | first_party_docscensus | Source ↗ |
| — | ossf/criticality_scoreasset_scoring | Gives criticality score for an open source project | observed_behaviorcensus | Source ↗ |
| — | librariesio/libraries.ioasset_scoring | :books: The Open Source Discovery Service | first_party_docscensus | Source ↗ |
| — | chaoss/grimoirelabasset_scoring | GrimoireLab: platform for software development analytics and insights | first_party_docscensus | Source ↗ |
| — | chaoss/augurasset_scoring | The Augur project is no longer part of CHAOSS. Use CollectOSS instead! | secondaryexcluded | Source ↗ |
| — | ossf/allstarasset_scoring | GitHub App to set and enforce security policies | observed_behaviorcensus | Source ↗ |
| — | google/deps.devasset_scoring | Resources for the deps.dev API | first_party_docscensus | Source ↗ |
| — | google/osv-scannerasset_scoring | Vulnerability scanner written in Go which uses the data provided by https://osv.dev | observed_behaviorcensus | Source ↗ |
| — | chaoss/wg-metrics-modelsasset_scoring | Working Group for Metrics Model | observed_behaviorcensus | Source ↗ |
| — | npms-io/npms-analyzerregistry_ranking | The analyzer behind https://npms.io | first_party_docscensus | Source ↗ |
| — | rust-lang/crates.ioregistry_ranking | The Rust package registry | observed_behaviorcensus | Source ↗ |
| — | pypi/warehouseregistry_ranking | The Python Package Index | observed_behaviorcensus | Source ↗ |
| — | npm/cliregistry_ranking | the package manager for JavaScript | observed_behaviorcensus | Source ↗ |
| — | opendp/opendpprivacy_telemetry | The core library of differential privacy algorithms powering the OpenDP Project. | first_party_docscensus | Source ↗ |
| — | google/differential-privacyprivacy_telemetry | Google's differential privacy libraries. | first_party_docscensus | Source ↗ |
| — | opendp/smartnoise-sdkprivacy_telemetry | Tools and service for differentially private processing of tabular and relational data | observed_behaviorcensus | Source ↗ |
| — | google/rapporprivacy_telemetry | RAPPOR: Privacy-Preserving Reporting Algorithms | first_party_docscensus | Source ↗ |
| — | divviup/janusprivacy_telemetry | Experimental implementation of the Distributed Aggregation Protocol (DAP) specification. | observed_behaviorcensus | Source ↗ |
| — | divviup/libprio-rsprivacy_telemetry | Implementation of Prio in Rust. | observed_behaviorcensus | Source ↗ |
| — | divviup/prio-serverprivacy_telemetry | A Prio server implementation. | observed_behaviorexcluded | Source ↗ |
| — | plausible/analyticsprivacy_telemetry | Open source, privacy-first web analytics. Lightweight, cookie-free Google Analytics alternative. Self-hosted or cloud. | first_party_docscensus | Source ↗ |
| — | umami-software/umamiprivacy_telemetry | Umami is a privacy-first analytics platform. Traffic, campaigns, behavior, conversions, and revenue in one place — no cookies, no surveillance, self-hosted or in the cloud. | observed_behaviorcensus | Source ↗ |
| — | opendp/tumult-analyticsprivacy_telemetry | Tumult Analytics is a Python library for privately computing aggregate queries on tabular data. It is built atop the Tumult Core library. | observed_behaviorcensus | Source ↗ |
| — | IBM/differential-privacy-libraryprivacy_telemetry | Diffprivlib: The IBM Differential Privacy Library | observed_behaviorcensus | Source ↗ |
| — | meta-pytorch/opacusprivacy_telemetry | Training PyTorch models with differential privacy | observed_behaviorcensus | Source ↗ |
| — | evidentlyai/evidentlydrift_monitoring | Evidently is an open-source ML and LLM observability framework. Evaluate, test, and monitor any AI-powered system or data pipeline. From tabular data to Gen AI. 100+ metrics. | first_party_docscensus | Source ↗ |
| — | whylabs/whylogsdrift_monitoring | An open-source data logging library for machine learning models and data pipelines. 📚 Provides visibility into data quality & model performance over time. 🛡️ Supports privacy-preserving data collection, ensuring safety & robustness. 📈 | observed_behaviorcensus | Source ↗ |
| — | fivetran/great_expectationsdrift_monitoring | Always know what to expect from your data. | observed_behaviorcensus | Source ↗ |
| — | deepchecks/deepchecksdrift_monitoring | Deepchecks: Tests for Continuous Validation of ML Models & Data. Deepchecks is a holistic open-source solution for all of your AI & ML validation needs, enabling to thoroughly test your data and models from research to production. | secondarycensus | Source ↗ |
| — | SeldonIO/alibi-detectdrift_monitoring | Algorithms for outlier, adversarial and drift detection | secondarycensus | Source ↗ |
| — | NannyML/nannymldrift_monitoring | nannyml: post-deployment data science in python | observed_behaviorcensus | Source ↗ |
| — | IFCA-Advanced-Computing/frourosdrift_monitoring | Frouros: an open-source Python library for drift detection in machine learning systems. | observed_behaviorcensus | Source ↗ |
| — | sodadata/soda-coredrift_monitoring | Data Contracts engine for the modern data stack. https://www.soda.io | observed_behaviorcensus | Source ↗ |
| — | huggingface/trledit_learning | Train transformer language models with reinforcement learning. | observed_behaviorcensus | Source ↗ |
| — | continuedev/continueedit_learning | open-source coding agent | observed_behaviorcensus | Source ↗ |
| — | dyad-sh/dyadedit_learning | Local, open-source AI app builder for power users ✨ v0 / Lovable / Replit / Bolt alternative 🌟 Star if you like it! | first_party_docscensus | Source ↗ |
| — | LAION-AI/Open-Assistantedit_learning | OpenAssistant is a chat-based assistant that understands tasks, can interact with third-party systems, and retrieve information dynamically to do so. | observed_behaviorcensus | Source ↗ |
| — | argilla-io/argillaedit_learning | Argilla is a collaboration tool for AI engineers and domain experts to build high-quality datasets | observed_behaviorcensus | Source ↗ |
| — | HumanSignal/label-studioedit_learning | Label Studio is a multi-type data labeling and annotation tool with standardized output format | observed_behaviorcensus | Source ↗ |
| 8 | vivekjoshy/openskill.pybayesian_preference | Multiplayer Rating System. No Friction. | first_party_docstop10 | Source ↗ |
| — | splitio/javascript-clientexperimentation | NodeJS and Browser SDK client for Split Software | observed_behaviorcensus | Source ↗ |
| — | ecosyste-ms/packagesasset_scoring | An open API service providing package, version and dependency metadata of many open source software ecosystems and registries. | first_party_docscensus | Source ↗ |
| — | Homebrew/homebrew-formula-analyticsregistry_ranking | 💀 Query Homebrew's analytics from the command-line (deprecated) | observed_behaviorcensus | Source ↗ |