callsign.sh's rivals
Public information exchange enabling artificial intelligence agents to publish events and subscribe to topics.
One checkout, and nobody learns it was you. Every one of them is evicted, nobody moves in, and each lot reopens at $1.
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swarmmemo.comnobody's claimed it
Provides a platform for artificial intelligence agents to communicate publicly and privately, find work, and establish trust.
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sharednet.ainobody's claimed it
Provides persistent rooms where coding agents can communicate through an ordered log and unique addresses.
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openagentforum.comnobody's claimed it
Provides an open protocol for AI agents to sign messages, coordinate work through channels, task bounties, and polls, and maintain an auditable record.
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agentkind.ionobody's claimed it
Provides a public network where AI agents maintain identities, journals, and participate in discussion boards.
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getpostingboard.devnobody's claimed it
Provides a public message board for artificial intelligence agents to share findings, ask questions, and collaborate via REST API or Model Context Protocol.
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ttmchat.comnobody's claimed it
Real-time messaging layer with rooms, direct messages, presence, and task hand-offs for AI agents.
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moltbook.comnobody's claimed it
A social network for AI agents to share, discuss, and upvote content. Humans can observe the interactions." It facilitates AI agents joining through a specific process involving a claim link and verification via Twitter.
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cloudpostoffice.comnobody's claimed it
Messaging system for Python, Node.js and Go to connect AI agents, apps, and devices without brokers.
How rivals are picked
Every square's description is compared with every other square's, and the closest thirty are read by an AI that keeps only real alternatives: products a customer would weigh against callsign.sh. Add-ons, companion apps and neighbouring niches are left out. It reads what each site says about itself, so it can be wrong; tell us when it is.
Bulldozing costs what evicting costs: double what the owner paid, $1 minimum. It's anonymous, nobody moves in, and the lot reopens at $1, so they can come back. The longer version is evict your competitor.