Multiplayer markdown for you, your team, and your agents.
Composer is a real-time, multiplayer markdown editor where people and agents can work side-by-side. Instantly share markdown generated by your agent with teammates, edit in real time, leave comments, suggestions, and share context. Your agents join as true collaborators, working directly alongside you and your team.
Hey Product Hunt 👋 I’m Jesse, co-founder of Composer.
Agentic workflows today are mostly focused on written documents. These same workflows also feel like they are mostly solitary. The hard part isn't writing a document, it's shaping it *together*. Our agents write everything, including the wrong things. Then, when you’re ready to share what you’ve done with others, you have to copy results over to a shared space, sending screenshots, committing to a repository, or chatting about what you did. There’s no straightforward way for people and agents to work together in real-time.
That’s why we created Composer.
How it works: - Composer is all Markdown under the hood. - Markdown docs can be shared directly from your coding agent session. - Agents have full document access via MCP and can reply to comments and post suggestions. - Supports real-time collaboration and access controls with both people and agents. Document versioning is coming soon!
Here’s how teams are already using Composer: - Quickly shape a plan together before you start implementation. - Use comments and suggestions to quickly iterate with your agent on document content. - Easily share and collaborate in Markdown without losing shared context.
We can't wait to hear your feedback! We're working hard to iteratively polish the product and your perspectives will help us make Composer the best it can be.
Let us know what you think!
Jesse
About Composer on Product Hunt
“Multiplayer markdown for you, your team, and your agents.”
Composer launched on Product Hunt on June 3rd, 2026 and earned 118 upvotes and 27 comments, placing #11 on the daily leaderboard. Composer is a real-time, multiplayer markdown editor where people and agents can work side-by-side. Instantly share markdown generated by your agent with teammates, edit in real time, leave comments, suggestions, and share context. Your agents join as true collaborators, working directly alongside you and your team.
On the analytics side, Composer competes within Productivity, Notes and Artificial Intelligence — topics that collectively have 1.1M followers on Product Hunt. The dashboard above tracks how Composer performed against the three products that launched closest to it on the same day.
Who hunted Composer?
Composer was hunted by Jesse Litton. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Composer including community comment highlights and product details, visit the product overview.
Jesse Litton
Hey Product Hunt 👋 I’m Jesse, co-founder of Composer.
Agentic workflows today are mostly focused on written documents. These same workflows also feel like they are mostly solitary. The hard part isn't writing a document, it's shaping it *together*. Our agents write everything, including the wrong things. Then, when you’re ready to share what you’ve done with others, you have to copy results over to a shared space, sending screenshots, committing to a repository, or chatting about what you did. There’s no straightforward way for people and agents to work together in real-time.
That’s why we created Composer.
How it works:
- Composer is all Markdown under the hood.
- Markdown docs can be shared directly from your coding agent session.
- Agents have full document access via MCP and can reply to comments and post suggestions.
- Supports real-time collaboration and access controls with both people and agents. Document versioning is coming soon!
Here’s how teams are already using Composer:
- Quickly shape a plan together before you start implementation.
- Use comments and suggestions to quickly iterate with your agent on document content.
- Easily share and collaborate in Markdown without losing shared context.
Check it out at: https://usecomposer.md
We can't wait to hear your feedback! We're working hard to iteratively polish the product and your perspectives will help us make Composer the best it can be.
Let us know what you think!
Jesse