AI Verdict
Confidence: MediumMarket is growing but crowded; differentiation through vertical focus or team features could succeed, but must move faster than incumbents.
Financials
Buildability
Sidebar for ChatGPT Chrome extension
Sidebar for ChatGPT is a fast-growing Chrome extension with over 9,000 users all organic, with no paid advertising. It provides instant AI assistance directly in the browser through a clean, lightweight sidebar. The core features are free forever, with an optional one-time $29 upgrade for power users.
Chrome extension with 9,000+ organic users offering ChatGPT sidebar access, currently at $0 MRR with one-time $29 premium option.
Minimal - primarily first-mover advantage in specific sidebar implementation, weak defensibility
- Chrome users who frequently use ChatGPT and want faster access without tab switching
- Power users who need persistent AI assistance while browsing
- No clear premium feature differentiation
- Missing team/enterprise features
- No integration ecosystem
- Limited customization options
- Add Claude/Gemini multi-model support
- Build vertical-specific templates (coding, writing, research)
- Create team collaboration features
- Add local model support for privacy
Medium - browser extensions can spread through usage visibility, but limited by niche use case
- ChatGPT could build native sidebar feature
- Browser vendors may restrict extension capabilities
- OpenAI API changes could break functionality
- Low barrier to entry for competitors
$5,000-$15,000 for MVP (developer time + API costs)
- Chrome extension manifest setup
- Sidebar UI with chat interface
- OpenAI API integration
- Local storage for chat history
- Basic prompt templates
Skip: Advanced AI models, Team collaboration, Multiple API providers, Complex analytics