1,214 tools
Free planAI models & APIs
Holistic Evaluation of Language Models (HELM) is Stanford CRFM's living benchmark for transparent language model evaluation. It emphasizes broad coverage, multi-metric measurements, standardization, and freely accessible data and analysis on the web.
Free planResearch & search
Helpfull is a real-time feedback platform that blends a large US panel with custom AI Personas so teams can run surveys, brand tests, and concept checks in minutes. The site also hosts free generators such as a business name tool alongside paid subscription and credit-based panel access.
Free trialSales & customer support
Helpjuice is knowledge base software for support and internal documentation, with customization, collaboration, localization, and an AI suite on higher tiers for writing, search, and chatbot answers. Pricing is per-month USD with user bundles and storage limits on each plan.
Free tier unknownMeetings, notes & transcription
Heptabase is a visual thinking and research workspace that combines whiteboards, PDF annotation, and AI-assisted Q&A for learning projects. Paid Pro, Premium, and Premium+ plans unlock unlimited PDF parsing, larger AI credit pools, and deeper agent features.
No free planResearch & search
HeronAI is a decision intelligence platform for mid-market operators that connects ERP, CRM, production, and finance data into explainable dashboards and workflows. The Aimee assistant surfaces risks and opportunities while human data scientists support implementation.
Free planEducation & tutoring
Heuristica is an all-in-one learning and research workspace that combines concept maps, flashcards, quizzes, PDF and YouTube chat, and multi-model AI conversations. Learners convert sources into study artifacts and collaborate on maps and prompts from one browser-based platform.
Free planResearch & search
Hex is a data analytics platform with agentic notebooks that combine SQL, Python and no-code cells, an AI agent that answers questions in plain language, and interactive data apps you can publish. AI features use credits, and paid plans are priced per editor.
Free tier unknownResearch & search
Marvin is an AI-native customer insights platform for organizing qualitative research, analyzing interviews, and distributing findings across teams. It offers repositories, mixed-methods analysis, Marvin Ask for cited answers, and newer in-product voice intercept research.
Free tier unknownResearch & search
HeyPat is a full-page AI answers experience powered by Dappier Ask AI.
Free tier unknownResearch & search
Civilio AI (formerly reachable via heywire.ai) delivers hyperlocal civic data and analytical tools for governments, civil society, and newsrooms. The product focuses on discovering and engaging with community-level civic datasets.
Research & search
hibrane monitors regulatory documents and generates AI-assisted change and impact analysis.
Free planResearch & search
hika.fyi hosts a suite of free, data-driven web tools spanning immigration case trackers, Singapore property calculators, stock research notes, Polymarket insights, and creative apps such as DeepRead time-budget reading. The homepage positions the domain as one hub for markets research and AI-native utilities rather than a single paid product.
Free tier unknownAI models & APIs
hiloop offers autoresearch as a service, running thousands of directed experiments against a customer-provided metric and scorer. Use cases span post-training eval climbing, inference optimization, synthetic RL environments, and signal-processing detection tasks.
Free planResearch & search
Hister is a private, self-hosted search engine for pages you visit and files you keep on Linux, macOS, and Windows. It exposes search through the web UI, terminal, command line, or MCP, with AGPL-licensed releases and documentation for local indexing without sending queries to a cloud vendor.
Free planResearch & search
Historica is an AI-powered historical mapping project that reconstructs landscapes and timelines of civilizations. It blends generative AI with multidisciplinary research to let visitors explore digital maps and editorial content about human history.
Free trialResearch & search
Histre is an AI-powered knowledge system that turns team browsing into shared notes, highlights, and research history. It offers smart bookmarks, integrations, and org workspaces to preserve tribal knowledge from everyday web research.
Free planResearch & search
HitKeep is an open-source, privacy-first web analytics platform for traffic, conversions, Search Console data, AI visibility, and optional evidence-backed AI insights. Teams can run managed HitKeep Cloud in EU or US regions or self-host the same MIT-licensed analytics core with exports in open formats.
Free planResearch & search
HokAI is a free AI tool directory and recommendation engine that ranks software by job, price, and features after a short intake quiz. It helps teams compare ChatGPT-class assistants, vertical SaaS, and agents using verified listings rather than generic top-10 lists.
Free tier unknownResearch & search
Honesty Meter is an AI tool that scores news and media articles for manipulation and bias, surfacing objectivity scores and bias reports plus a news integrity feed. The project describes itself as auto-improving with AI and user feedback.
Free planProductivity (email, docs, PDFs)
Honeybear.ai is an AI document assistant for analyzing, summarizing, and chatting with PDFs, documents, and videos using cited answers. Pro unlocks unlimited chats and larger uploads while a free tier offers limited trials.
Free trialResearch & search
Honeydew provides a semantic layer for AI and BI that lets data teams define shared business logic once and serve it to AI agents, BI tools, spreadsheets, and APIs. The platform emphasizes modeling, access control, Snowflake native deployment, and natural-language interfaces on governed metrics.
Free tier unknownMarketing & SEO
Hotjar, now part of Contentsquare, provides experience analytics with heatmaps, session recordings, surveys, and feedback widgets for websites and products. Marketers and product teams use it to see how users behave and collect qualitative insights alongside quantitative funnels.
No free planResearch & search
Hotshot is an editorial technology site publishing guides, comparisons, and reviews on AI tools, gadgets, smart home gear, and how-to workflows. It curates everyday tech decision-making content rather than offering a standalone AI software product or subscription workspace.
Free planResearch & search
Hubble is an enterprise user research platform for recruiting participants, running AI-moderated interviews, and unmoderated prototype or mobile tests. Teams connect studies from surveys and card sorting through to insights in one workspace aimed at UX, product, and marketing research.
Showing 672 of 1,214 tools
Plan facts carry individual sources and check dates. Unknown values are excluded from required filters.