# Collections > Source: https://theagentsindex.com/collections/ The Agents Index · Curated Shortlists of agents that share one feature you need. 18 collections Explore this section ## Every collection - [Agent platforms a company can buy and use in a browser](https://theagentsindex.com/collections/agent-platforms-a-company-can-buy-and-use-in-a-browser) · Ten agent platforms sell to organisations and work in a browser, with ElevenLabs Agents at $6 to $990/month and three on quote only. - [AI agencies that build and deploy](https://theagentsindex.com/collections/ai-agencies-that-build-and-deploy) · Agentix Labs, Arsum, Azumo, Bitsclan IT Solutions, Converly, Octacer, SafeNet Creations, TecAdRise and ZTABS write the code and also deploy it. - [AI Agent Tools With a Free Tier](https://theagentsindex.com/collections/ai-agent-tools-with-a-free-tier) · 55 of the 214 tools in our index offer a genuine, ongoing free tier — not a time-limited trial or a one-off credit grant — so you can build or test before paying. Developer tools lead by a wide margin; not one of our 19 support-agent listings has one. - [AI Agent Tools With a No-Code Builder](https://theagentsindex.com/collections/ai-agent-tools-with-a-no-code-builder) · A curated set of 22 AI agent tools whose listings document a visual, drag-and-drop, node-based, or plain-English path to building an agent without writing code. It includes code-first frameworks with optional studios, prompt-to-app coding agents, voice and support platforms, and visual workflow builders. The set keeps the important distinction between a builder and a product that only accepts a task prompt. - [AI Agent Tools With Documented Enterprise Security Controls](https://theagentsindex.com/collections/ai-agent-tools-with-enterprise-security-controls) · 49 of the 214 tools in our index name a specific enterprise security or deployment control — SSO/SAML, a named compliance certification, RBAC, audit logging, or VPC/on-prem deployment — in their own pricing or feature docs. Voice agents clear the bar at 10 of 18 and agent frameworks at 7 of 16, the frameworks only through an enterprise tier or deployment mode layered on top of an otherwise open core. - [AI Agent Tools With MCP Support](https://theagentsindex.com/collections/ai-agent-tools-with-mcp-support) · 61 of the 214 tools in our index document real support for the Model Context Protocol (MCP) today: as a client, a server, or both. Frameworks and coding agents are the densest slices; sales and marketing agents the thinnest. - [AI Agent Tools With Multi-Agent Support](https://theagentsindex.com/collections/ai-agent-tools-with-multi-agent-support) · 24 of the 214 tools in our index document a real multi-agent capability — but read the sourced facts behind the tag and it hides five structurally different things: composable orchestration frameworks you design yourself, no-code team builders, vendor-built agent teams, a single task fanned out across parallel agent copies, and live voice handoff mid-call. - [AI Agent Tools With Open-Weight Model Support](https://theagentsindex.com/collections/ai-agent-tools-with-open-weight-model-support) · 24 of the 214 tools in our index document real support for at least one open-weight or locally-run model (Llama, Mistral, DeepSeek, Qwen and others, typically via Ollama, LM Studio or a LiteLLM-style router) alongside the closed frontier APIs: a real answer to the single-vendor lock-in question, spanning frameworks, coding agents, agent platforms, voice agents and research agents. - [AI Agent Tools With Subscription Pricing](https://theagentsindex.com/collections/ai-agent-tools-with-subscription-pricing) · 17 of the 214 AI agent tools in our index price their product on a flat per-seat subscription — a published monthly or annual rate, no metered usage component, no sales call required to sign up. - [AI Agent Tools With Usage-Based Pricing](https://theagentsindex.com/collections/ai-agent-tools-with-usage-based-pricing) · 22 of the 214 tools in our index bill by usage rather than a flat seat or subscription fee — per minute, per resolution, per token, or per dollar of compute. For 4 of them, the rate you would actually pay per unit is never published: it is set in a sales call. - [AI Agent Tools You Can Self-Host](https://theagentsindex.com/collections/ai-agent-tools-you-can-self-host) · 38 of the 214 tools in our index can run somewhere you control. This is a deployment question, not a license one: the list mixes MIT- and Apache-2.0-licensed frameworks with no managed cloud at all, open cores paired with optional paid hosted layers, fair-code and source-available builds, and a handful of closed-source products that still ship a real private-deployment path. - [Autonomous AI Coding Agents](https://theagentsindex.com/collections/autonomous-coding-agents) · 16 of the 214 AI coding agents in our index plan and execute a coding task end-to-end without a human driving each step — verified against the listed facts of each tool's own Published listing, not the autonomous tag alone. - [GPT agent platforms with approval controls](https://theagentsindex.com/collections/gpt-agent-platforms-with-approval-controls) · These ten agent platforms run GPT models and let you set which actions need a person's approval; US dollar plans start at $20 a month. - [Model-Agnostic AI Agent Tools](https://theagentsindex.com/collections/model-agnostic-ai-agent-tools) · AI agent tools whose own product documentation supports multiple model providers or a bring-your-own-key layer, so the underlying LLM can be swapped without rebuilding the agent. - [Multi-agent platforms with metered pricing](https://theagentsindex.com/collections/multi-agent-platforms-with-metered-pricing) · Ten agent platforms that coordinate several agents on one task and meter usage by seat, credit, minute or interaction, with paid plans from $6 a month. - [Open-Source AI Agent Frameworks](https://theagentsindex.com/collections/open-source-ai-agent-frameworks) · Open-source frameworks for building AI agents on code you can read, fork and self-host: from the largest ecosystems to the newest TypeScript-native entrant. - [Open Source AI Agent Tools](https://theagentsindex.com/collections/open-source-ai-agent-tools) · The 26 tools in our index with a clean, unrestricted OSI-style license (MIT, Apache-2.0, GPL-3.0-or-later or AGPLv3) — free to fork, self-host and run forever, no source-available caveats and no proprietary layer gating the part you would actually run. - [Voice Agent APIs for Developers](https://theagentsindex.com/collections/voice-agent-apis) · The 9 voice agent platforms in our index that publish a developer-facing API for embedding voice into a third-party product.