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Free Developer Tools & APIs tools: 237 (2026)

237 tools in the Developer Tools & APIs category are marked as free, sorted by rating by default.

237 matching tools
Top ratedNewestName A–ZSee all Developer Tools & APIs tools
LangUILangUI is an open‑source Tailwind CSS component library with 60+ ready‑made, responsive components in dark/light modes. Zero dependencies, simple copy‑paste, customizable slate/blue palette, MIT‑licensed, community‑driven, supports rapid AI UI prototyping.langui.devFree★ 5.0MagicAnimate PlaygroundMagicAnimate animates static images with temporally consistent motion using a diffusion model and MSE‑finetuned VAE, supports cross‑ID animation, pose‑driven motion via OpenPose, and can animate text‑generated images. Open‑source, local or via Hugging Face/Replicate.magicanimate.orgFree★ 5.0metaflow.orgMetaflow is an open‑source Python framework for building, managing, and deploying ML workflows. It supports local development, seamless cloud migration, automatic variable tracking, compute scaling, versioned workflow storage, and one‑click production rollout.metaflow.orgFree★ 5.0Openfabric AIOpenfabric is a decentralized layer‑one blockchain that lets AI developers, data providers, and infrastructure partners build, train, and deploy algorithms on a permissionless network. Its marketplace offers ready‑made tools, and token holders can stake for governance and liquidity.openfabric.aiFree★ 5.0PromptaPrompta is a user-friendly open-source chat GPT client with cross-device syncing, local storage, and API key integration for accessibility and convenience. It can be downloaded from GitHub.prompta.devFree★ 5.0RapidChart.aiRapidChart is an AI-driven UML diagram generator that allows software developers and architects to create various diagrams quickly, including UML, C4 model, and neural network visualizations, using an infinite canvas and intelligent auto-layout features.rapidcharts.aiFree★ 5.0Replit GPT AssistantReplit GPT Assistant is an AI tool that aids developers on the Replit platform by providing real-time support for coding issues, deployment challenges, and environment configuration, enhancing the overall programming experience for users of all skill levels.replitgptassistant.comFree★ 5.0sanctuary.aiSanctuary AI’s Phoenix robot is an industrial‑grade humanoid that learns from high‑fidelity simulation to perform autonomous, dexterous manipulation in automotive, manufacturing, and logistics tasks. It features hydraulic hands, tactile feedback, robust torque, and NVIDIA Isaac Lab sim‑to‑real training for deployment.sanctuary.aiFree★ 5.0ShareIDShareID is a modular identity platform enabling eIDAS 2.0 compliant verification with photo, video, NFC, and liveness detection, EUDI Wallet attestations, password‑less MFA, configurable SDKs, fraud analytics, and single‑console management for scalable, compliant identity workflows.shareid.aiFree★ 5.0tensor.arttensor.art is an AI art platform that enforces real-time human verification and connection reviews (Cloudflare-backed) to block automated access, requiring JavaScript-enabled browsers and offering verification status and access-control integrations for developer workflows and APIs.tensor.artFree★ 5.0testrigor.comtestRigor is an AI‑driven, no‑code test automation platform that turns plain‑English instructions into end‑to‑end tests for web, mobile, desktop, API, and mainframe. It records real‑user interactions, supports cross‑browser validation, CI/CD integration, and self‑healing for low‑maintenance, reliable testing.testrigor.comFree★ 5.0zero1cinezero1cine is an AI‑centric film database cataloging AI‑generated movies across genres, letting creators submit works and audiences discover titles, browse metadata, build watchlists, and access festival and award event listings.zero1cine.comFree★ 5.0RoboflowRoboflow streamlines computer‑vision projects by offering a low‑code pipeline for data annotation, GPU‑accelerated training, and multi‑environment deployment. It integrates with PyTorch, TensorFlow, Hugging Face, major clouds, and meets SOC2 Type 2 and HIPAA security.roboflow.comFree★ 4.0APIPodAPIPod is a unified API gateway providing access to 100+ AI models for text, image, video, and audio generation. It simplifies production deployment with developer tools, agent orchestration, observability, and enterprise-grade reliability.apipod.aiFree★ 4.0Open Voice OSOpenVoiceOS is an open-source voice AI platform for creating custom voice-controlled interfaces.openvoiceos.comFree★ 4.0CerebrasCerebras provides a wafer-scale AI accelerator and software stack that enables single-node training of very large LLMs, high-throughput low-latency inference (GLM-4.6 at 1,000 TPS), PyTorch SDK, deployment options, and MLOps tooling.cerebras.aiFree★ 3.9APIPASS API MarketplaceAPIPASS API Marketplace is a unified platform for discovering, testing, and integrating APIs across REST, GraphQL, and SOAP. It provides a searchable catalog with built-in testing tools, comprehensive documentation, and management workflows for streamlined deployment.apipass.devFree★ 3.8PinMePinMe provides instant static-site deployment via an npm CLI or browser drag-and-drop, with GitHub integration, upload history, and basic file management. Sites publish to IPFS for peer-to-peer distribution and cryptographic verification.pinme.eth.limoFree★ 3.8NanoClawnanoclaw is an open-source personal Claude assistant using the Anthropic Agents SDK that runs containerized, filesystem-isolated agents (macOS/Linux), connects to WhatsApp, supports memory, scheduled jobs, skills, multi-channel context, security controls, and on-premise deployment.github.comFree★ 3.4SugarbugSugarbug is workflow intelligence that connects your fragmented tools – Linear, GitHub, Figma, Slack, Notion, email, calendars – and builds a living knowledge graph of tasks, people, and relationships. Every signal understood, every dropped ball caught. The longer it runs, the smarter it gets.sugarbug.aiFree★ 3.4Clips AIClips AI is an open‑source Python library that automatically segments long‑form videos using WhisperX transcription and Pyannote speaker diarization, then resizes and reframes clips to 9:16 for mobile. It streamlines batch processing of podcasts, interviews, speeches, and sermons.clipsai.comFree★ 2.5EpsillaEpsilla lets organizations create AI agents without infrastructure management. Its no‑code builder, built‑in RAG, and performance dashboards support multi‑tenant deployments, hosted as SaaS or on‑premise, and offer vertical solutions across manufacturing, finance, healthcare, and more.epsilla.comFree★ 2.5Gamma.aiGamma.AI is a cloud DLP tool integrated with Palo Alto Networks CASB that automatically discovers and classifies data across 150+ SaaS apps with 99.5% accuracy. It offers one‑click deployment, real‑time remediation, and API connectors for SIEM/SOAR integration.gamma.aiFree★ 2.5LabEx.ioLabEx delivers free, interactive labs for Linux, DevOps, and cybersecurity, organized into skill‑tree pathways. AI assistant Labby aids debugging, while online terminals and real‑world projects cover Docker, Kubernetes, Python, Java, Ansible, and more.labex.ioFree★ 3.5

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