function: sdk
3115 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| bitcoinj/bitcoinj bitcoinj is a Java library for working with the Bitcoin protocol, supporting wallet management, sending and receiving transactions via SPV … | 89 | 5228 | active |
| blinker-iot/blinker-library Blinker is an IoT solution library for embedded hardware such as Arduino, ESP8266, and ESP32, providing device-side connectivity via WiFi, … | 67 | 5194 | active |
| dotnet/Silk.NET Silk.NET is a .NET library providing high-performance bindings to low-level graphics, compute, audio, and multimedia APIs such as OpenGL, V… | 77 | 5173 | active |
| maziyarpanahi/openmed OpenMed is a local-first healthcare AI SDK for clinical named-entity recognition and HIPAA PII/PHI de-identification that runs entirely on-… | 83 | 5166 | active |
| stlink-org/stlink An open-source toolset for programming and debugging STM32 microcontrollers via STLINK programmer hardware, including flash tools, a GDB se… | 66 | 5145 | active |
| signalwire/freeswitch FreeSWITCH is an open-source software-defined telecom stack that turns commodity servers into a full telephony platform for voice, video, a… | 94 | 5118 | stable |
| MCP-UI-Org/mcp-ui mcp-ui is an SDK implementing the MCP Apps standard for delivering interactive UI over the Model Context Protocol. It provides client SDKs … | 73 | 5108 | active |
| dotnet/MQTTnet MQTTnet is a high-performance .NET library implementing the MQTT protocol (up to version 5), providing both an MQTT client and an embedded … | 87 | 5062 | active |
| pollinations/pollinations Pollinations is an open-source generative AI platform offering free APIs for text, image, and vision model inference without requiring API … | 77 | 4996 | active |
| react-native-webrtc/react-native-webrtc A WebRTC module for React Native providing peer-to-peer audio/video calling, data channels, and screen capture on Android, iOS, tvOS, and w… | 85 | 4989 | active |
| exiftool/exiftool ExifTool is a platform-independent Perl library plus a full-featured command-line application for reading, writing, and editing metadata in… | 70 | 4983 | stable |
| pytorch/executorch ExecuTorch is PyTorch's framework for exporting and running AI models on-device across mobile, embedded, and edge hardware, with a tiny (~5… | 95 | 4953 | active |
| muzei/muzei Muzei is an Android live wallpaper app that refreshes your home screen daily with famous works of art or your own photos, blurring and dimm… | 67 | 4940 | active |
| matter-labs/zksync zkSync is Matter Labs' open-source ZK Rollup technology for scaling and adding privacy to Ethereum, including the ZK Stack framework for la… | 59 | 4923 | active |
| Picovoice/porcupine Porcupine is a highly-accurate, lightweight on-device wake word detection engine powered by deep neural networks. It enables always-listeni… | 73 | 4922 | stable |
| aipotheosis-labs/aci ACI.dev is an open-source tool-calling platform that connects 600+ SaaS tools to AI agents and agentic IDEs via direct function calling or … | 62 | 4885 | active |
| neilsonnn/image-blaster A Claude skillset that converts a single input image into a full 3D environment, including meshed 3D models (.glb/.obj), Gaussian splats (.… | 51 | 4822 | active |
| microsoft/msquic MsQuic is Microsoft's cross-platform C implementation of the IETF QUIC transport protocol (RFC 9000), with API wrappers for C++, C#, and Ru… | 98 | 4771 | stable |
| EpicenterHQ/epicenter Epicenter is a local-first application platform and developer toolkit where an app's entire data set is a single CRDT (Yjs) document stored… | 80 | 4771 | active |
| ant-design/x Ant Design X is a React UI component library and toolkit from the Ant Design team for building AI-driven conversational interfaces, includi… | 84 | 4744 | active |
| NVIDIA-Omniverse/PhysX NVIDIA PhysX SDK, a real-time physics simulation engine for games, robotics, and simulation, plus Omniverse PhysX extensions and the ovphys… | 93 | 4736 | stable |
| ant-media/Ant-Media-Server Ant Media Server is a scalable open-source media server for ultra-low latency live streaming, built around WebRTC (~0.5s latency) with supp… | 89 | 4726 | stable |
| liveblocks/liveblocks Liveblocks is a realtime collaboration infrastructure and SDK toolkit for adding multiplayer features, comments, notifications, and AI copi… | 95 | 4692 | stable |
| Ironclad/rivet Rivet is an open-source visual AI programming environment consisting of a desktop IDE for building AI agents and prompt chains via a node-b… | 77 | 4680 | active |
| openziti/zrok zrok is an open-source tool for securely sharing local web services, files, and TCP/UDP resources over the internet without firewall or NAT… | 89 | 4645 | active |
| OpenNMT/CTranslate2 CTranslate2 is a C++ and Python library for fast, memory-efficient inference of Transformer models on CPU and GPU. It uses quantization, la… | 96 | 4644 | stable |
| build-trust/ockam Ockam is a Rust library and CLI toolkit for building secure-by-design distributed applications with end-to-end encryption, cryptographic id… | 61 | 4633 | active |
| latitude-dev/latitude-llm Latitude is an open-source, MIT-licensed AI agent observability and monitoring platform that captures production agent traffic as traces an… | 86 | 4604 | active |
| webui-dev/webui A lightweight portable C library that uses any installed web browser or optional WebView as the GUI for desktop applications, communicating… | 66 | 4586 | active |
| IRS-Public/direct-file Direct File is the IRS's free, interview-based service for taxpayers to electronically file federal tax returns directly with the IRS. The … | 58 | 4585 | active |
| Hanson/vbot Vbot is a PHP library implementing a WeChat (personal WeChat) robot based on the WeChat web protocol, supporting message sending/receiving,… | 61 | 4582 | active |
| virtual-kubelet/virtual-kubelet Virtual Kubelet is an open-source Kubernetes kubelet implementation that masquerades as a kubelet to connect Kubernetes clusters to other A… | 87 | 4560 | active |
| hku-mars/FAST-LIVO2 FAST-LIVO2 is a fast, tightly-coupled LiDAR-inertial-visual odometry and mapping system written in C++ on ROS. It provides real-time, accur… | 56 | 4557 | active |
| JetBrains/koog Koog is a JetBrains-built Kotlin/Java framework for creating fault-tolerant, enterprise-ready AI agents on the JVM, with multiplatform depl… | 84 | 4536 | active |
| apache/fory Apache Fory is a blazingly fast multi-language serialization framework supporting idiomatic domain objects, a reference-aware schema IDL, a… | 96 | 4515 | active |
| projectdiscovery/interactsh Interactsh is an open-source tool for detecting out-of-band (OOB) interactions via DNS, HTTP(S), SMTP(S), and LDAP, useful for identifying … | 85 | 4512 | active |
| openai/harmony OpenAI's Rust library (with first-class Python bindings) for rendering and parsing the harmony response format used by its open-weight gpt-… | 52 | 4487 | active |
| cyanfish/naps2 NAPS2 is a free, open-source document scanning application for Windows, Mac, and Linux that supports WIA, TWAIN, SANE, and ESCL scanners an… | 97 | 4464 | active |
| astriaai/headshots-starter An open-source Next.js starter kit that generates professional AI headshots from user-uploaded selfies using Astria.ai's fine-tuning and in… | 40 | 4463 | active |
| opencontainers/image-spec The Open Container Initiative (OCI) Image Format Specification, defining the standard layout and metadata for container images including ma… | 64 | 4453 | stable |
| pydantic/logfire Pydantic Logfire is an AI observability platform built on OpenTelemetry that traces LLM calls, agent runs, and application telemetry in one… | 87 | 4441 | active |
| rivet-dev/agentos agentOS is a library that gives AI agents a lightweight operating system running inside your existing backend process, using WebAssembly an… | 91 | 4426 | active |
| s1dashu/ip-as-logo-skill A compact Agent Skill that guides AI agents to generate highly simplified, rounded, subtly neo-skeuomorphic IP mascot logos. It follows the… | 57 | 4374 | active |
| dotnet/fsharp The official open-source F# compiler, F# core library (FSharp.Core), and F# language service, including tooling integration for Visual Stud… | 74 | 4323 | stable |
| crmne/ruby_llm RubyLLM is a Ruby framework providing a unified, expressive interface to all major AI providers (OpenAI, Anthropic, Google, Ollama, and any… | 83 | 4322 | active |
| networkupstools/nut Network UPS Tools (NUT) is an open-source toolkit for monitoring and managing power devices such as UPS units, PDUs, ATS switches, PSUs, an… | 83 | 4290 | active |
| blinker-iot/blinker-esp-idf Blinker is an IoT solution library for embedded hardware, provided as ESP-IDF components for ESP8266 and ESP32. It enables devices to conne… | 37 | 4288 | active |
| LibreOffice/core LibreOffice is a free, open-source office suite comprising Writer (word processing), Calc (spreadsheets), Impress (presentations), Draw (ve… | 77 | 4277 | stable |
| Nixtla/neuralforecast NeuralForecast is a Python library offering a large collection of state-of-the-art neural forecasting models (NBEATS, NHITS, TFT, PatchTST,… | 98 | 4257 | active |
| alibaba/weex Weex is a framework for building performant cross-platform mobile UIs using modern web technology, rendering to native Android and iOS comp… | 48 | 18513 | maintenance |
| SylphAI-Inc/AdalFlow AdalFlow is a PyTorch-like Python library for building and auto-optimizing LLM application workflows such as chatbots, RAG pipelines, and a… | 67 | 4211 | active |
| eth-sri/lmql LMQL is a query/programming language for large language models, implemented as a Python-based superset that lets developers interleave prom… | 32 | 4208 | active |
| johnlindquist/kit Script Kit is an open-source, cross-platform desktop app for creating and running TypeScript/JavaScript scripts that automate daily workflo… | 62 | 4186 | active |
| ArcInstitute/evo2 Evo 2 is a DNA foundation language model (1B-40B parameters) that models genomes at single-nucleotide resolution with up to 1 million base … | 62 | 4157 | active |
| Seeed-Projects/reBot-DevArm An open-source robotic arm project (hardware and software) from Seeed, with CERN-OHL-W-2.0 licensed hardware designs and Apache-2.0 softwar… | 61 | 4143 | active |
| ton-blockchain/ton The main TON monorepo containing the reference implementation of The Open Network blockchain, including the node/validator software, lite-c… | 99 | 4136 | active |
| opengeos/segment-geospatial SamGeo (segment-geospatial) is a Python package that applies Meta AI's Segment Anything Model (SAM, SAM2, SAM3, HQ-SAM) to geospatial data … | 97 | 4122 | active |
| solvespace/solvespace SolveSpace is a free, open-source parametric 2D/3D CAD application with a constraint-based sketcher and solid modeling via extrudes, revolv… | 80 | 4118 | active |
| microfeed/microfeed microfeed is an open-source, agentic, headless CMS that self-hosts on Cloudflare Workers, D1, and R2, letting users publish podcasts, blogs… | 99 | 4050 | active |
| doctrine/persistence Doctrine Persistence is a PHP library providing common interfaces and abstractions shared by Doctrine's object mappers (ORM, ODM, etc.). It… | 91 | 4045 | stable |
| apollographql/apollo-ios Apollo iOS is a strongly-typed, caching GraphQL client for Swift, supporting iOS, macOS, watchOS, tvOS, and visionOS. It provides code gene… | 98 | 4033 | stable |
| openthread/openthread OpenThread is Google's open-source, Thread Certified implementation of the Thread networking protocol, covering all Thread networking layer… | 98 | 4020 | stable |
| midrender/revideo Revideo is a TypeScript rendering engine for creating videos programmatically by describing scenes in code. It provides a headless render A… | 66 | 4006 | active |
| geocoder-php/Geocoder Geocoder is a PHP library providing a powerful abstraction layer for geocoding and reverse geocoding, with 30+ swappable providers like Goo… | 63 | 3972 | stable |
| version-fox/vfox vfox is a cross-platform, plugin-extensible version manager (similar to nvm, sdkman, and asdf-vm) for installing and switching SDKs such as… | 87 | 3970 | active |
| apache/guacamole-server The server-side component of Apache Guacamole, consisting of guacd (a proxy daemon), libguac (a C API), and protocol support libraries for … | 77 | 3965 | stable |
| isaac-sim/IsaacSim NVIDIA Isaac Sim is an open-source robotics simulation application built on NVIDIA Omniverse for developing, simulating, and testing AI-dri… | 74 | 3960 | active |
| google-gemini/gemini-skills A collection of agent skills (context packages) for the Gemini API, SDKs, and model interactions, installable into AI coding assistants via… | 60 | 3941 | active |
| vuejs/vuefire VueFire is the official Firebase bindings library for Vue.js, providing idiomatic composables for realtime data binding with Firestore, Rea… | 71 | 3909 | stable |
| huggingface/huggingface_hub The official Python client and CLI for the Hugging Face Hub, a platform for sharing machine learning models, datasets, and apps. It lets us… | 95 | 3845 | stable |
| pimcore/pimcore Pimcore is an open core PHP framework and platform for Product Experience Management that unifies PIM, MDM, DAM, CDP, DXP/CMS, and digital … | 95 | 3837 | active |
| TransformerLensOrg/TransformerLens TransformerLens is a Python library for mechanistic interpretability of GPT-style transformer language models. It lets researchers load tho… | 99 | 3825 | active |
| winscp/winscp WinSCP is a free, open-source file manager and transfer client for Windows supporting SFTP, FTP, FTPS, SCP, S3, WebDAV, and local-to-local … | 77 | 3791 | stable |
| SciSharp/LLamaSharp LLamaSharp is a cross-platform C#/.NET library that wraps llama.cpp to run LLaMA-family and other LLMs (including multimodal LLaVA) efficie… | 92 | 3787 | active |
| StuckAtPrototype/Racer An open-source hardware and firmware project for a tiny PCB-based RC car built around the ESP32-H2, including KiCad schematics, gerbers, 3D… | 46 | 3765 | active |
| nikoksr/notify Notify is a Go library that provides a simple, unified API for sending notifications to many messaging services such as Telegram, Slack, Di… | 86 | 3759 | active |
| open-telemetry/opentelemetry-dotnet The official OpenTelemetry SDK and API implementation for .NET, providing vendor-neutral instrumentation for traces, metrics, and logs. It … | 95 | 3743 | stable |
| polyaxon/polyaxon Polyaxon is an open-source AI engineering control plane that teams self-host on their own Kubernetes clusters to schedule, track, and gover… | 77 | 3723 | active |
| grammyjs/grammY grammY is an open-source framework for building Telegram bots in TypeScript or JavaScript, running on Node.js, Deno, and even browsers. It … | 99 | 3722 | active |
| Renhuai123/ziwei-doushu An open-source Zi Wei Dou Shu (Purple Star Astrology) chart calculation engine based on Ni Haixia's Tianji system, written in TypeScript wi… | 60 | 3707 | active |
| memodb-io/Acontext Acontext is an open-source memory layer for AI agents that captures learnings from agent runs and stores them as human-readable Markdown sk… | 70 | 3676 | active |
| borglab/gtsam GTSAM is a C++ library implementing smoothing and mapping (SAM) for robotics and vision using factor graphs and Bayes networks as its core … | 92 | 3656 | active |
| open-wa/wa-automate-nodejs A Node.js/TypeScript toolkit that turns a WhatsApp account into an HTTP API, bot runtime, webhook bridge, plugin host, and MCP server by au… | 78 | 3649 | active |
| spdk/spdk SPDK is a set of C libraries, drivers, and tools for building high-performance, scalable user-mode storage applications. It moves storage d… | 86 | 3646 | stable |
| kubernetes-sigs/agent-sandbox Agent Sandbox is a Kubernetes SIG project providing a Sandbox Custom Resource Definition (CRD) and controller for managing isolated, statef… | 84 | 3640 | active |
| cloudflare/workers-rs Ergonomic Rust bindings for the Cloudflare Workers runtime, letting developers write entire Workers in Rust compiled to WebAssembly. It pro… | 95 | 3639 | active |
| dtinit/data-transfer-project An open-source framework providing common data models and adapter libraries that enable direct service-to-service transfer of user data bet… | 67 | 3619 | active |
| aws/aws-lambda-rust-runtime A set of Rust crates providing a runtime for running AWS Lambda functions written in Rust, including HTTP support, extensions, and typed ev… | 94 | 3609 | active |
| lowRISC/opentitan OpenTitan is an open-source silicon Root of Trust (RoT) project providing commercial-grade, security-certified hardware IP blocks written i… | 83 | 3607 | stable |
| FirebaseExtended/reactfire ReactFire is a TypeScript library of hooks, context providers, and components that simplify interacting with the Firebase Web SDK in React … | 97 | 3571 | active |
| borb-pdf/borb borb is a pure Python library for reading, creating, and manipulating PDF files, modeling documents in a JSON-like structure with a high-le… | 94 | 3570 | active |
| strukto-ai/mirage Mirage is a unified virtual filesystem for AI agents that mounts services like S3, Google Drive, Slack, Gmail, Postgres, and Redis side-by-… | 80 | 3569 | active |
| rdkit/rdkit RDKit is an open-source cheminformatics toolkit written in C++ with Python, Java, C#, and JavaScript wrappers. It provides core data struct… | 98 | 3565 | stable |
| IgnisDa/ryot Ryot (Roll Your Own Tracker) is a self-hosted web application for tracking media consumption (movies, shows, books, games, anime, podcasts,… | 97 | 3564 | active |
| juggleim/im-server JuggleIM is a self-hosted, high-performance instant messaging server written in Go, using a Protobuf + WebSocket long-connection protocol w… | 90 | 3540 | active |
| ardatan/graphql-mesh GraphQL Mesh is a GraphQL federation framework and gateway that converts non-GraphQL API services (REST/OpenAPI, gRPC, SOAP, OData, Thrift,… | 95 | 3512 | active |
| AmrDeveloper/GQL GitQL is a SQL-like query language with an in-memory query engine, implemented in Rust, that executes queries directly on .git files withou… | 78 | 3512 | active |
| langwatch/langwatch LangWatch is an open-source LLMOps platform for LLM evaluation, AI agent testing, tracing, and production observability. It combines agent … | 90 | 3511 | active |
| unitycatalog/unitycatalog Unity Catalog is an open-source, multimodal data and AI catalog that provides a unified metadata and governance layer for tables, files, fu… | 86 | 3501 | active |
| EngineHub/WorldEdit WorldEdit is an in-game Minecraft map editor available as a mod or server plugin, offering selections, schematics, copy/paste, brushes, and… | 76 | 3499 | active |