Agent 37 Cloud

Best Agent 37 Cloud Alternatives in 2025

3 alternatives found

Overview of Agent 37 Cloud

Agent 37 Cloud is a managed hosting platform designed specifically for persistent AI agents like Hermes, OpenClaw, and Claude Code. Instead of running these agents on your own Mac minis or VPS, Agent 37 lets you spin up always-on agent instances for each customer with a single API call. Pricing starts at $3.44 per month per agent, making it an attractive option for founders shipping vertical AI products without the operational overhead of server management.

Why Look for Alternatives

While Agent 37 Cloud simplifies persistent agent hosting, it may not fit every use case. Some teams need more control over agent customization, prefer session-based architectures, require on-premise deployment for compliance, or want built-in observability and chat UI components. Others might be looking for browser automation capabilities or local-first development workflows. Exploring alternatives helps you find the right balance of features, pricing, and deployment flexibility for your specific needs.

Top Alternatives

1. 21st Agents SDK (Score: 65/100)

21st Agents SDK is a code-first TypeScript framework for building and deploying custom agents. It includes a React chat UI, server SDK, and observability dashboard with cost per session, latency, and error tracking. Unlike Agent 37's always-on instances, 21st Agents SDK is session-based—agents boot per interaction, making it less suited for long-running stateful agents. It supports on-premise deployment in your own VPC for data residency needs. Pricing is usage-based rather than flat per-instance. Best for teams that want to quickly build custom TypeScript agents with a polished UI and deep observability, especially for session-based use cases.

2. 1Code (Score: 45/100)

1Code runs multiple coding agents (Claude Code, Codex) locally on your Mac with a visual UI, git integration, and live browser previews. It offers an open-source option for self-hosting. However, it is not a managed service—you handle local setup or cloud sandboxes yourself. It lacks per-customer persistent instances, an API for provisioning, and white-labeling/billing features. Best for individual developers or small teams who want to run multiple coding agents in parallel locally or in cloud sandboxes, rather than hosting persistent agents for many customers.

3. Demonstrate by Notte (Score: 35/100)

Demonstrate by Notte is a unified platform for browser automation, offering recording, code generation, serverless deployment, managed sessions, proxies, and scheduling. It includes SDKs for Python and Node.js. However, it focuses on browser automation and scraping, not on hosting persistent AI agents like Hermes or Claude Code. It lacks per-customer always-on instances, agent lifecycle management, and white-labeling features. Best for teams whose primary need is browser automation, web scraping, or deploying browser tasks, rather than hosting persistent AI agents for each customer.

How to Choose

When evaluating alternatives to Agent 37 Cloud, consider the following criteria:

  • Agent Persistence: Do you need always-on, stateful agents per customer, or are session-based interactions sufficient?
  • Customization: How much control do you need over agent code, UI, and deployment environment?
  • Observability: Is built-in monitoring (cost, latency, errors) critical for your use case?
  • Deployment: Do you require on-premise or VPC deployment for compliance, or is a managed cloud service acceptable?
  • Pricing Model: Is a flat per-instance fee more predictable than usage-based pricing?
  • Target Use Case: Are you building vertical AI products for customers, or do you need browser automation or local development tools?

For persistent, customer-facing agents with minimal operational overhead, Agent 37 Cloud remains a strong choice. If you need more customization and observability in a session-based architecture, 21st Agents SDK is a solid alternative. For local development or browser automation, 1Code and Demonstrate by Notte serve different niches. Assess your priorities and choose the platform that aligns best with your product and business requirements.

Alternatives

21st Agents SDK
1. 21st Agents SDK

21st Agents SDK is the fastest way to add an AI agent to your app. Define your agent in TypeScript, deploy in one command, and embed a production-ready chat UI with Built-in streaming, session management, usage billing, and observability — so you can focus on what makes your agent unique, not infrastructure. Backed by Y Combinator (W26).

Pros

  • + 21st Agents SDK is code-first with TypeScript, making it easier for developers to define and customize agents without managing templates or Docker images.
  • + Built-in React chat UI components and server SDK reduce frontend integration work compared to Agent 37's lower-level API.
  • + Includes observability dashboard with cost per session, latency, and errors out of the box, whereas Agent 37 focuses more on compute metering.
  • + Supports on-premise deployment in your own VPC for teams needing data residency or compliance.

Cons

  • - 21st Agents SDK is session-based (boots per session), not persistent always-on instances like Agent 37, so it's less suited for long-running agents that need to maintain state across sessions.
  • - Pricing is usage-based rather than per-instance flat rate, which may be less predictable for high-volume customer deployments.
  • - Does not offer pre-built agent templates (Hermes, OpenClaw) or a catalog of ready-to-use agent images.
  • - No built-in support for scheduled/cron runs or embedding terminal/desktop/file browser UIs.

Choose 21st Agents SDK when you want to quickly build and deploy a custom TypeScript agent with a polished chat UI and observability, especially if your use case is session-based rather than requiring persistent, always-on agent instances per customer.

1Code
2. 1Code

Whats 1Code? An app to run your Claude Code agents in parallel that works on Mac and Web. On Mac - run locally, with or without worktrees. On Web - run in remote sandboxes with live previews of your app, mobile included, so you can check on agents from anywhere. Running multiple Claude Codes in parallel dramatically sped up how we build features.

Pros

  • + Runs agents locally on Mac, giving full control over environment and data
  • + Supports multiple agent types (Claude Code, Codex) in one app
  • + Includes visual git integration and live browser previews
  • + Open-source option available for self-hosting

Cons

  • - Not a managed hosting service; requires local setup or self-managed cloud sandboxes
  • - Does not provide per-customer persistent agent instances out of the box
  • - No built-in API for provisioning agents for multiple customers
  • - Lacks white-labeling and billing features for reselling agent access

Choose 1Code if you are an individual developer or small team who wants to run multiple coding agents in parallel locally or in cloud sandboxes with a visual UI, rather than needing to host persistent agents for many customers.

Demonstrate by Notte
3. Demonstrate by Notte

Record any browser task once and get production-ready code instantly with Demonstrate Mode. Edit further your code in our Automation Studio with live browsers, deploy automation code as a serverless function, and schedule it to run autonomously. Managed sessions, proxies, identities, and vaults handle everything behind the scenes. The fastest path from prototype to production in one unified platform.

Pros

  • + Provides a unified platform for browser automation with recording, code generation, and serverless deployment
  • + Offers managed sessions, proxies, and identities out of the box
  • + Supports scheduling and autonomous runs for production workflows
  • + Includes SDKs for Python and Node.js, plus n8n integration

Cons

  • - Focused on browser automation and scraping, not on hosting persistent AI agents like Hermes or Claude Code
  • - Does not provide per-customer always-on agent instances with dedicated compute and storage
  • - Lacks the agent-specific templates and API for managing agent lifecycles
  • - Not designed for white-labeling agent products to end customers

Choose Demonstrate by Notte over Agent 37 Cloud if your primary need is browser automation, web scraping, or recording and deploying browser tasks, rather than hosting persistent AI agents for each customer.

About Agent 37 Cloud

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