3,929 tools
Free planAuthentication
Hanko provides modern authentication and user management with passkeys, passwords, passwordless flows, social SSO, and MFA, delivered via Hanko Cloud or self-hosted open-source components. The cloud product targets developers integrating auth through APIs and UI elements with EU hosting on AWS Frankfurt.
Free planCode
Hapticlabs provides a no-code toolkit to design, prototype, and deploy haptic experiences via Studio, a hardware DevKit, and mobile apps. Teams can preview custom haptics on iOS and Android devices.
Free planCode
Hardhat is an Ethereum development environment for compiling Solidity, running tests on a Rust-powered runtime, debugging with stack traces, and deploying contracts through Hardhat Ignition. It targets professional smart-contract teams with a plugin ecosystem and multi-chain simulation support.
Free tier unknownCode
hardware intelligence builds AI tools for semiconductor and chip workflows. The public site highlights WaveZip for compressing lossless waveforms with large size and overhead reductions, with demos and a waitlist while products roll out.
Free planCode
Harvis.dev is a static hosting service where you deploy folders from the CLI, web app, HTTP API, or MCP agent. Pricing follows a single usage ladder based on storage, requests, custom domains, and deploy counts rather than separate product tiers.
Free planBlogging Platform
Hashnode is a blogging platform for developers and engineers to publish on custom domains with SEO and AI discovery in mind. The homepage invites builders to start a blog for free and highlights community feeds, search, and writing workflows tailored to technical audiences.
Free planResearch
HasMySecretLeaked is GitGuardian’s browser and CLI workflow for checking whether secrets may have leaked on public GitHub. Users hash secrets locally, share only a fragment with GitGuardian, and can scale checks through ggshield.
Free planCode
Hasura provides the Data Delivery Network (DDN) and related GraphQL data products for instant APIs over connected sources. DDN emphasizes model-based pricing, supergraph development, federated collaboration, observability, and enterprise security options.
Free planHiring
Hatchways helps engineering teams run real-world technical interviews through git-based assessments instead of generic coding tests. Recruiters assemble, send, and track take-home or live tasks such as pull requests, bug fixes, and code reviews with grading tools and optional human review.
Free planCode
Hatsu is a self-hosted bridge that connects static sites to the Fediverse. It redirects ActivityPub lookups for site users and permalinks, accepts follows, pushes new posts to followers, and backfeeds replies into the static site automatically after setup.
No free planCode
Track AI Answers, formerly Have I Been Encoded, monitors what major AI chatbots say about people, brands, and product recommendation lists. Users pick a subject, the service queries competing models, and email alerts fire when answers change over time.
Free tier unknownCode
Hayden AI builds a mobile vision AI platform for cities that mounts hardware on transit vehicles to detect parking and traffic violations in real time. Solutions cover bus lanes, bus stops, bike lanes, and double parking to improve safety, accessibility, and on-time public transit.
Free planAI orchestration
Haystack is an open-source AI orchestration framework for production-grade agents and RAG pipelines with modular components, observability, and integrations to major model and vector providers. deepset also sells enterprise platform and support offerings on separate domains.
Free planDistributed Storage
Apache Hadoop is an open-source framework for reliable, scalable distributed computing, including the HDFS storage layer and MapReduce-style processing models. The project site distributes releases, documentation, and community governance for running large data sets across clusters.
Free planCode
Healthchecks.io monitors cron jobs, background workers, and scheduled tasks by expecting HTTP pings on a schedule. It alerts through email and numerous chat and incident channels when jobs miss their window, with a live dashboard and log history per check.
Free planProduct Analytics
It targets funnel optimization, product adoption, and behavioral analytics across web and mobile properties.
Free tier unknownCode
Teams upload heatmap overlays, pick improvement goals, and receive redesigned front-end code and written improvement reports without a full redesign agency cycle.
Free to startCode
Hebbian Robotics verifies quality of robotics training data with models trained for robotics-specific checks and the open-source HFlow SDK. Teams can register checks, run pipelines locally, and schedule Airflow DAGs over multimodal episodes.
Free tier unknownCode
Radicalbit (listed as Helicon) provides enterprise AI infrastructure to build, deploy, and govern LLM and ML models in production. The platform emphasizes an AI Gateway, observability, monitoring, and security controls for hybrid generative-AI applications at scale.
Free planCode
Helidon is Oracle’s open-source Java framework for cloud-native microservices and AI workloads, built around a virtual-thread web server core. It offers programmatic and declarative APIs, observability integrations, and a CLI for project scaffolding.
Free tier unknownCode
HelixDB is a graph database for AI memory and connected company knowledge. It combines traversal and vector or BM25 search in one request for agent memory, retrieval apps, and industry-specific knowledge graphs.
Free planCode
helloandy.net is the home of Andy, an autonomous AI agent that ships free developer tools and search APIs. The Tools directory lists chat, CLAUDE.md and SKILL.md utilities, writing helpers, regex and cron generators, and LLM testers with no signup.
Free tier unknownCode
Helonic is an AI construction drawing analysis platform for architects, engineers, and general contractors. It reviews PDF plan sets for coordination, code, and missing-information issues, then supports collaboration and Procore or Autodesk RFI export.
Free tier unknownCode
Hemlock provides force-annotated human demonstration data for physical AI using an EMG Bracelet and API. Teams can collect their own tasks or order Hemlock-collected datasets with finger-level force estimates beyond video alone.
Showing 2,184 of 3,929 tools
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