Hermes WebUI vs Hermes Workspace: Which Is Better in 2026?

So you've got Hermes Agent running. Good. Now you're staring at two different web interfaces, wondering which one to commit to. I've been there.

Last Tuesday, on my staging cluster, I switched between them three times in one afternoon. Not because I couldn't decide — but because each one excels at completely different things. And the choice matters more than you think.

Both are free. Both are open-source. Both let you interact with your persistent, self-improving AI agent from a browser instead of a terminal. But they are not the same tool. Not even close.

Let's break this down.

Hermes WebUI: The Lightweight Contender

Hermes WebUI is what I'd call the "terminal-first" web interface. It's built by the same people behind Hermes Agent, and it shows. The design philosophy is simple: give you nearly 1:1 parity with the CLI experience, but wrapped in a dark-themed web UI that works from any browser.

I run it on a $5 VPS. No joke. It's that light.

Core Features

• Three-panel layout: Left sidebar for sessions and navigation, center for chat, right for workspace file browsing. A composer footer sits at the bottom with a context ring showing token usage.
• Streaming chat with SSE: Responses stream in via Server-Sent Events. You can edit past messages, retry, queue, and cancel mid-response.
• Session management: Create, rename, duplicate, delete, pin, archive, and organize sessions into projects with tags and colors. Sessions group by Today/Yesterday/Earlier.
• Workspace file browser: Inline preview for code, markdown, and images. Manage files directly from the UI.
• Multi-provider model support: OpenAI, Anthropic, Google, DeepSeek, Nous Portal, OpenRouter, MiniMax, Xiaomi MiMo, Z.AI, and more. Dynamic model dropdown.
• Tool call & subagent cards: Inline cards showing tool name, arguments, and result snippets. Subagent delegation cards have distinct icons and indented borders.
• Security & theming: Password protection, SSH tunnel access, dark and light themes, profile support.

Nope. That's not a feature list. That's what you get out of the box.

The Good

It's dead simple to set up. Clone the repo, run ./start.sh, and you're done. Or use Docker:

docker pull ghcr.io/nesquena/hermes-webui:latest
docker run -d \
  -e WANTED_UID=$(id -u) -e WANTED_GID=$(id -g) \
  -v ~/.hermes:/home/hermeswebui/.hermes \
  -v ~/workspace:/workspace \
  -p 8787:8787 ghcr.io/nesquena/hermes-webui:latest

That's it. No build step. No bundler. No framework overhead. Just Python and vanilla JavaScript.

It connects reliably. I've had it running for weeks without a hiccup. SSH tunnel it from a remote server, and you can access it from your phone. Actually works on mobile — I've chatted with my agent while waiting for coffee.

The Not-So-Good

You can only use one agent profile at a time. That's the biggest limitation. If you want to run multiple agents with different configurations simultaneously, you're out of luck.

No terminal access inside the UI. No Hermes World (the 3D environment for agent visualization). No advanced coordination tools.

It's a single-user interface, essentially. Great for a solo developer. Not great for a team.

Actionable alternative: Skip the setup entirely and try Try Hermes WebUI for a fully managed experience.

Hermes Workspace: The Heavyweight

Hermes Workspace is the feature-rich sibling. It's designed for managing a coordinated team of agents, not just one. Think of it as the control center for Hermes Agent operations.

I tried it on a beefier server — 8GB RAM, 4 cores. It needs the extra juice.

Core Features

• File management: Full file browser with upload, download, edit, and delete capabilities.
• Terminal access: Run shell commands directly inside the UI. No need to SSH separately.
• Hermes World: A 3D environment where you can visualize agent activities and interactions.
• Swarms: Run multiple agent profiles simultaneously. Coordinate them to work on tasks together.
• Kanban boards: Organize tasks and track progress visually.
• Jobs: Schedule and manage recurring tasks.
• Conductor: A central orchestrator that delegates tasks to different agents.
• Missions: Define complex workflows with multiple steps and conditional logic.

The Good

If you need to run a swarm of agents, this is the only option. The Kanban boards and missions give you project management capabilities that Hermes WebUI simply doesn't have.

The terminal access is a game-changer. I can debug issues without leaving the interface. No more juggling between SSH sessions.

The Not-So-Good

It's buggy. I'll be honest. Setting it up can be a headache. Configuration files get finicky. Connections drop randomly. I've had to restart the service more times than I'd like.

The classic trap — I fell into it in production. I thought "more features = better." Then I spent two hours debugging a YAML config because of a missing space. Classic.

It's also heavier. You'll need a decent server to run it smoothly. And the learning curve is steeper.

Side-by-Side Comparison

Architecture & Data Flow

Here's how both interfaces fit into the Hermes Agent ecosystem:

The key difference: Hermes WebUI is a thin client that talks directly to Hermes Agent. Hermes Workspace adds an orchestration layer on top.

When to Choose Which

Pick Hermes WebUI if:

• You're a solo developer or power user
• You want something that "just works"
• You need mobile access via SSH tunnel
• You're running on a low-resource server
• You prefer CLI parity and minimal abstraction

Pick Hermes Workspace if:

• You need to coordinate multiple agents
• You want project management features (Kanban, missions)
• You need terminal access inside the UI
• You're running on a decent server (8GB+ RAM)
• You're willing to deal with occasional bugs for more power

After two hours of debugging my YAML configs, I finally found the culprit for a Workspace connection issue: a missing newline at the end of a file. That broke everything. The fix is trivial. But it wasted my afternoon.

The Verdict

I use both. Hermes WebUI for my daily driver — it's always running, always connected, never gives me trouble. Hermes Workspace when I need to run experiments with multiple agents or manage a complex project.

If you're new to Hermes Agent, start with Hermes WebUI. It's the safer choice. Get comfortable with the agent, then graduate to Workspace if you need the extra features.

Don't overthink it. Both are free. Try them both. See which one fits your workflow.

Actionable alternative: If you want to skip the setup hassle, check out Try Hermes WebUI for a managed cloud solution.

FAQ

How does Hermes WebUI compare to Open WebUI?

Hermes WebUI is designed specifically for Hermes Agent, offering 1:1 CLI parity and persistent memory, while Open WebUI is a general-purpose interface for various LLM backends. Hermes WebUI is lighter (no build step, no framework, no bundler) and focuses on the Hermes ecosystem.

What is the best webUI for Hermes?

Hermes WebUI is the official web interface for Hermes Agent, providing full CLI parity, persistent memory, and multi-provider support. It integrates seamlessly with the Hermes Agent setup.

Can I use Hermes WebUI on my phone?

Yes, Hermes WebUI is accessible from any browser, including mobile browsers, via an SSH tunnel. It is designed to be responsive and work on phones.

Is Hermes WebUI open source?

Yes, Hermes WebUI is open source under the MIT license, and the code is available on GitHub.

Do I need to install Hermes Agent separately?

Yes, Hermes WebUI is a frontend for Hermes Agent. The bootstrap script can detect and install Hermes Agent if missing.

Can I run both Hermes WebUI and Hermes Workspace at the same time?

Technically yes, but they'll compete for the same Hermes Agent instance. I wouldn't recommend it. Pick one per server, or use separate servers.

Which one is better for beginners?

Hermes WebUI, without question. Less to break, less to configure, more reliable. Once you outgrow it, Workspace is waiting.