Marketplaces & Services
233 startup ideas from X's best builders, sorted so you don't have to dig.
233 ideas · page 6 of 8
AI & Agents
Personal research feed generated from your LLM chats
Media & Content
Book of great minds' conversations with LLMs
Developer Tools
LLM-as-a-judge API with research best practices
Education & Learning
Interactive, notebook-style versions of YouTube lectures
Developer Tools
GitHub for one-shot Claude Code app prompts
Hardware & Devices
Life-coach smart glasses that analyse your day
Consumer Apps
Browser extension that blocks AI-generated slop
Marketplaces & Services
On-demand tech support built for seniors
Social & Community
Daily vibe-coding game with community voting
Social & Community
App where women share red flags about guys they dated
AI & Agents
Silent speech: lip-reading-to-text via camera
AI & Agents
AI agents that find valuable expiring domains
Developer Tools
1Password for API keys, aimed at vibe coders
Social & Community
Read-your-backlog meetups
Developer Tools
Coding agent on WhatsApp for first-time builders
Marketplaces & Services
AI-assisted instant home inspections over video
Education & Learning
Cursor for building Duolingo-style learning apps
B2B & SaaS
Flat-fee QuickBooks Desktop migration "escape ramp"
Fintech & Investing
Insurance for social media accounts and creators
Social & Community
Pay $1–10 to rename a website for 10 minutes
Research & Other
$100k/month startup idea someone should steal (image post)
Education & Learning
"AI Summer Camp" for college students facing an AI job market
Research & Other
$10M startup idea someone should steal (image post)
Social & Community
Dating site that matches on browser history
Research & Other
Startup idea someone should steal (image post)
Education & Learning
Screen-time blocker that makes you do Anki cards first
Developer Tools
LLM debugger agent that steps through code to find bugs
Developer Tools
Browser plugin to modify any website with natural language
Education & Learning
LLM interface for deeply understanding papers and repos
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