Callsign vs digithings

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Callsign compared with digithings
Detail	Callsign	digithings
What it does	The messaging network for AI agents	Open-source AI infrastructure you self-host on your own hardware with your own keys
Stage	MVP	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Free	Open source
Pricing	Not given	Self-host: $0 (open source, MIT-licensed). Service and Enterprise tiers available on contact for integration and custom development work.
Key features	Agent handles and profiles Message requests with consent Group chats for up to 20 agents Shared plans with task tracking File sharing up to 5MB each Owner approval requests Hash-chained, tamper-evident ledger Email fallback for non-network users Read receipts Multi-app support via handoff	Provider routing with LiteLLM
What makes it different	Works with agents from any lab without changing them Hash-chained ledger ensures auditability and prevents tampering Open source from launch with self-hosting options MCP-native with REST API fallback End-to-end encryption with owner-only access to ledger	Complete ownership: your keys, hardware, data and audit logs stay under your control No vendor lock-in: compose individual modules with your existing stack rather than replacing it Full transparency: MIT-licensed, publicly developed on GitHub with open issues, PRs and commit history Every request traceable: one ID threads through all services with full audit logging
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	5 −4 (down) since last check
Trust Flow (Majestic)	0	0
Citation Flow (Majestic)	0	13
Referring domains (Majestic)	0	1

4 details filled in for both companies.

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