Built-in harness widgets
Terminal, Browser, Files, YouTube, Claude Code, Codex, Gemini, Cursor, Qwen, Vibe Agent. Jarvis can tile them by voice.
CUSTOM WIDGETS · AGENT-NATIVE UI
The agent does not just chat. It drives custom widgets.
Cloud harnesses like Grok Bot and Perplexity Computer give an agent a computer they own. VibeFuse gives the agent your canvas — including widgets downloaded from the marketplace and widgets another agent just built. That is a capability those products do not sell.
Three sources of widgets. One control loop.
Marketplace downloads
Save a listing, launch VibeFuse, and the iframe widget lands on the canvas. The agent still knows it is a widget — not a mystery tab.
Agent-made custom UI
A coding agent authors manifest.json + index.html. You (or the next agent) install it. The harness treats it like first-party chrome.
Honest comparison, not model wars
Grok Bot is an always-on teammate with a persistent cloud computer. Perplexity Computer is a digital worker that researches, browses, and orchestrates many models in a sandbox. ChatGPT agent / Operator and Claude computer-use / Cowork sit in the same category: the vendor’s machine, the vendor’s apps.
VibeFuse is local-first Windows: you keep the files, the PTY, and the widget DOM. The differentiator is widget-native control. If a creator in São Paulo publishes a board widget, your agent in Dallas can install it and drive it. Cloud computers cannot subscribe to that catalog as native UI.
Compare: Grok Bot alternative, Perplexity Computer alternative, computer-use agents, ChatGPT agent, Claude Cowork.
How to prove it on your machine
- Install VibeFuse with a free VF- key.
- Save the official Agent Control Lab widget from the marketplace.
- Ask Jarvis or Vibe Agent to spawn it, tile it, and read its state.
- Publish your own widget. Repeat the loop with a listing someone else built.
- ✓ Agent-driven custom UI
- ✓ Marketplace install path
- ✓ Skills + styling packs
- ✓ Free Windows harness
Explore VibeFuse & harness guides
- Harness Guide
- Free Coding Tools
- AI Coding Agent Desktop
- Free Voice Transcription
- Free Text to Speech
- VibeFuse Product
- Widget Marketplace
- Download Free
- VibeFuse Docs
- Shareable AI Widgets
- Shareable AI Skills
- MCP Tools
- AI Agent Harness
- Harness Engineering
- HyperFrames Video
- Skill Seekers
- Sell AI Skills
- AI Skills Marketplace Compared
- Cursor Alternative
- Local Whisper + Piper
- Custom AI Dashboard
- Founders 50
- Computer-use agents
- Grok Bot alternative
- Perplexity Computer alternative
- ChatGPT agent alternative
Custom AI widgets FAQ
Can a VibeFuse agent control widgets other people made?
Yes. Marketplace widgets install locally as canvas panels. The Vibe Agent and Jarvis can spawn, tile, resize, focus, and operate them by name — the same loop used for built-in Terminal, Browser, and coding-agent widgets.
Can an agent create a widget another agent then uses?
Yes. A coding agent can author manifest.json + index.html, publish or drop it on the canvas, and a later session — or another provider agent — can drive that custom UI.
How is that different from Grok Bot or Perplexity Computer?
Those products give an agent a vendor cloud computer (browser, files, terminal, connectors). They do not ship a public marketplace of user-built canvas widgets that the agent treats as native UI. VibeFuse does.
Does this mean VibeFuse beats Grok 4.6 or Perplexity’s models on raw IQ?
No. You still bring Claude, Codex, Gemini, Cursor, Grok, or local models. The win is the harness: custom widget UI the agent understands, on your Windows machine, with a creator marketplace.