You might expect YC startups to dominate Product Hunt.
They don't. Between October 1 and 24, Junior tracked 906 launches from Product Hunt's daily lists. Only 18 came from Y Combinator companies. That's about 2%.
But the 18 are worth a look, because they show what YC companies are actually shipping right now. And most of it is tools for AI agents.
Junior marks a launch as YC-backed when the company matches YC's public directory (and we're not affiliated with Product Hunt or YC). Here are the ten with the most upvotes, then the rest.
1. OpenCode 2.0
YC W21 · 313 upvotes, #2 on October 13 · opencode.ai
An open source AI coding agent, now at version 2.0. You can use it in the terminal, as a desktop app, or in the browser.
The most upvoted YC launch of the month, from a batch five years old.
2. Databench by Alkera
YC S26 · 234 upvotes, #4 on October 7 · alkera.ai
An open source, multiplayer workspace for data teams. Teammates and agents work together in notebooks and chats, and every result traces back to the data and code behind it. There's a free tier, or you can host it yourself.
3. Exa 3.0
YC S21 · 189 upvotes, #5 on October 20 · exa.ai
The biggest update yet to Exa's search API for AI agents.
A larger embedding model, billions of new documents (including 1.27B ecommerce listings and 211M+ local businesses), and "Dynamic Highlights" that use 95% fewer tokens than full page text. The new Exa Lite tier costs $4 per 1,000 requests, and Exa Auto costs $7.
The only one here that puts its paid prices right in the launch post, which I appreciate.
4. Pomerado
YC F26 · 177 upvotes, #5 on October 16 · pomerado.ai
Turns any website into an API or an MCP tool, in minutes. Their examples are Google Flights, Zillow, Instacart and old legacy portals, sites with no API that your agent still needs to use. The tool is open source, and they build, host, authenticate and maintain the integrations.
The top launch from the newest batch.
5. withHuman
YC S23 · 108 upvotes, #8 on October 15 · withhuman.ai
An approval layer for AI agents. It catches your agents' tool calls before they run. Rules approve or deny the routine ones automatically, and the risky ones go to the right person on your team.
It works across Claude Code, Codex and agents built with LangGraph, Pydantic AI and others, through an open protocol. One set of rules for every agent your company runs.
6. Finbar
YC W25 · 101 upvotes, #18 on October 2 · finbar.com
Investment research for investors and their agents, now open to everyone. They say it's already used by several of the world's largest hedge funds. Fundamental data worldwide over API and MCP, prebuilt company models, and an AI suite for research and modeling, on the web and in Excel.
7. Rhem Labs
YC F26 · 98 upvotes, #15 on October 7
A tabletop robot for aging parents.
Their point is that small changes in health and routine can go unnoticed for weeks, until the first obvious sign is something serious. Rhem helps families see those changes earlier, while helping parents stay independent at home longer.
The only hardware on the list, and the one I'd most like to see work.
8. Backdrop
YC W23 · 96 upvotes, #12 on October 15
Build AI coworkers for any workflow. Give them the right tools and context, and they research, create, coordinate and follow up. They connect to Slack, Asana, Google, HubSpot, Meta, TikTok and 1,500+ more apps.
9. Scape (two launches)
YC S24 · 89 upvotes on October 13, and 60 on October 1
Scape launched twice this month. The first launch runs Claude Code, Codex or OpenCode across unlimited isolated git worktrees on your Mac. The second is an agent that runs a whole fleet of agents on a heartbeat, keeps its own table of tickets as memory, and finds bugs in the logs before anyone reports them.
10. Dreamscale Labs
YC F26 · 80 upvotes, #23 on October 15 · dreamscalelabs.com
Cloud inference for robots. They serve large physical AI models over the cloud with very low latency, so a robotics team can run the newest models without buying expensive GPUs.
The rest
- Stage (YC X26, 73 upvotes) lets designers, PMs and engineers pin comments on a working prototype, has Claude fix them, and files the Linear or Jira ticket. Reviewers are free.
- Sorcerer (YC S24, 70 upvotes) is a free, MIT-licensed Mac app that simulates a community of AI agents reacting to any "what if" question.
- Sorted (YC W23, 70 upvotes) organizes your Mac's files privately: OCR, duplicates, local AI tags and search by meaning.
- Acyclic (YC F26, 69 upvotes) splits a task across many agents, each in its own fork of the workspace, and merges the results.
- SlashDocs by Razorpay (YC W15, 68 upvotes) is a self-hosted, open source place where agents publish interactive documents and your team comments on them.
- Stardrift (YC S24, 65 upvotes) is an AI travel assistant, now on iOS.
- Praxis (YC F26, 20 upvotes) places supplement reminders in the gaps in your calendar and checks for conflicts.
What October is telling us
YC companies are building for agents.
OpenCode, Databench, Exa, Pomerado, withHuman, Scape, Acyclic and SlashDocs are all tools that AI agents use, or tools to keep agents in check. That's 8 of 17 companies. The consumer apps (Stardrift, Praxis, Rhem) are the minority.
The newest batch is the busiest.
Five launches came from F26, the Fall 2026 batch: Pomerado, Rhem Labs, Dreamscale Labs, Acyclic and Praxis. S24 had four (counting Scape twice). Product Hunt is still part of the YC launch playbook.
Old companies keep launching.
Razorpay is from W15, more than ten years ago, and it launched an open source tool for agent-written documents. OpenCode (W21) and Exa (S21) had two of the top three YC launches. A company that old still launching on Product Hunt like a startup is a good sign for everyone else.
YC doesn't guarantee upvotes.
Praxis got 20. OpenCode got 313. And the most upvoted launch of the whole month, across all 906, wasn't from YC at all. The badge helps people notice you. It doesn't do the launch for you.
Why this list is useful
If you sell to startups, YC companies are some of the easiest to research: the batch is public, and so are the founders.
Junior flags every YC-backed launch and lists the makers behind it, so you can filter to just these and reach the person who built each one: YC-backed launches on Junior.
Which batch do you think has the best launches so far?
Upvotes, ranks and launch counts as of October 24, 2026. YC batches from YC's public directory. Product details come from each team's own launch description.