15,420 tools
Compare plans, free tiers and API access across thousands of AI tools — every fact carries its source and check date.
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AgentPhone provisions US and Canadian phone numbers for AI agents and routes voice and SMS through a unified webhook. Developers can reply with text while the platform handles speech, with usage-based rates for numbers, minutes, and message segments plus optional hosted voice agents.
Free planCode
Agent Pilot is a free, open-source desktop app under AGPL-3.0 for creating, managing, and chatting with graph-based AI workflows. It supports tool calling, branching chats, structured outputs, Open Interpreter code execution, reusable building blocks, and customizable configuration UIs.
Free planDeveloper Tools
Agent Protocol is an open API specification and SDK ecosystem for interacting with autonomous AI agents through a common REST interface. Maintained by AGI, Inc., it defines tasks, steps, and artifacts so benchmarks and devtools can talk to agents built in any framework without custom glue code.
Free planCode
AgentQL by TinyFish connects LLMs and agents to the web with a query language and SDKs for extracting structured data from dynamic pages. It offers Playwright integrations, a browser extension debugger, REST browserless access, PDF parsing, and tiered API plus remote browser usage.
Free tier unknownCode
Agent Relay is a messaging layer that coordinates Claude, Codex, and other coding agents across shared channels, direct messages, durable delivery, event listeners, and typed actions for long-running software workflows.
AI developer workflows
Agent Role Contracts checks AI-agent role definitions, task scope and review handoffs before execution.
Free tier unknownCode
AgentScale AI is a consulting-style automation vendor combining robotic process automation, large language models, and AI agents for business workflows. The public site highlights services and portfolio work rather than a self-serve software console.
Free planCode
Agentset provides building blocks for AI chat and search over private documents with RAG, citations, metadata filters, and multimodal ingestion.
Free planCode
AgentSight is a local-first observability tool from Eunomia that profiles AI agents with eBPF and TLS tracing, linking prompts and tool calls to processes, files, and network effects. It runs around CLIs like Claude Code, Codex, and Gemini without SDKs or proxies.
Free tier unknownAssistant
AGENTS.inc builds autonomous Agents-as-a-Service for enterprise marketing, sales, and market intelligence. Customers such as Kaufland, AXA, E.ON, and Petrobras use purpose-built agents with grounding against client systems, delivered through the AGENTS HQ platform with task-specific interfaces instead of generic chatbots.
Free planResearch
AgentsKB is a verified Q&A knowledge layer for AI agents covering APIs, SDKs, and frameworks. It offers instant answers from a curated corpus plus a research mode for new domains, delivered through MCP and a free REST API without signup.
Free planCode
Agent Skills is an open format and documentation hub for extending AI agents with portable skill folders. Each skill is a directory with a required SKILL.md metadata file plus optional scripts, references, and assets that agents discover, activate, and execute on demand through progressive disclosure.
Free planCode
Agent Zero is an open-source agentic AI framework that runs on its own operating system, creates and uses tools, learns, self-corrects, and executes transparent workflows. The vendor distributes a desktop launcher, documentation, and community governance tools.
Free tier unknownResearch
Ageospatial delivers geospatial AI for insurance, government, and infrastructure teams, summarizing where assets are, what surrounds them, and what changed. The homepage demos property, infrastructure, and exposure intelligence drawn in seconds for underwriting and public-sector decisions.
Free tier unknownAction AI
AGI, Inc. builds on-device action AI (AGI-0) that executes tasks across mobile and desktop apps with privacy-focused, offline-capable agents. The company also offers a platform for hardware partners to ship working action agents without per-app integrations.
Free planCode
Agno is a self-driving agent platform with an open Agent SDK, AgentOS runtime, and control plane that runs in your cloud. Teams build and serve customer-facing or internal agents with sessions, traces, memory, knowledge, evals, and integrations to Claude Code, Codex, and Cursor.
Free planCode
Agnost AI monitors conversational AI agents in production to detect silent failures, surface user frustration, and suggest fixes for approval. Pricing tiers scale tracked events and retention from a free starter allowance through Starter and Pro plans.
Free planDeveloper tools
AgnosUI is a component library for Svelte, React, and Angular with accessible, reactive widgets. It ships headless or Bootstrap-themed controls such as modals, selects, trees, and tooltips for product teams standardizing UI patterns.
Free planImages
Comic AI (Comic-AI.ai) is a free online comic maker workflow for planning characters, panel pacing, dialogue, and digital pages, with optional motion-comic exports. It targets creators who want end-to-end comic production rather than one-off image generation.
Free planAhaSend provides EU-hosted transactional email delivery through REST APIs and SMTP relay. The vendor emphasizes transparent usage pricing, GDPR readiness, and developer tooling such as webhooks, CLI utilities, and deliverability features.
Free trialWriting
Ahazou is a Brazilian social-content app that gives entrepreneurs ready-made posts, stories, videos, and captions for Instagram, Facebook, WhatsApp, and TikTok. Users pick their industry, customize creatives with a logo, and publish daily content drawn from a large library created by specialists.
SEO
Ahrefs is an SEO toolset for backlink analysis, keyword research, site audits, rank tracking and AI search brand monitoring, with paid tiers by projects, tracked keywords and crawl credits plus a free tier.
Free planAssistant
Ahrefs Webmaster Tools, branded Ahrefs Free on the product page, gives verified site owners web analytics, Site Audit crawls, and Site Explorer views for domains they control. It surfaces traffic sources, technical SEO issues, backlinks, and keyword visibility without analyzing unverified competitors.
Free planResearch
Ai2 ASTA is a scholarly research assistant from the Allen Institute for AI that combines literature understanding with data-driven discovery. It searches more than 108 million abstracts and 12 million full-text papers to find, summarize, and analyze scientific evidence, with anonymous access enabled in the public app configuration.
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