Busabase vs openagent.email

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

Busabase compared with openagent.email
Detail	Busabase	openagent.email
What it does	The open-source database and workspace for AI agents	Self-hosted email and task handoffs for AI agents with no vendor control plane
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Not given	Open source
Pricing	Free: $0 (1 space, 3 seats, 5,000 records, 1 GB storage). Plus: $10/seat/month ($120/year, 2 months free) for 3 spaces, 10 seats, 20 GB storage. Pro: $20/seat/month ($240/year, 2 months free) for unlimited spaces, unlimited seats, 100 GB storage.	Self-hosted is free under Apache-2.0 license (pay only for VPS infrastructure ~$5/month and domain ~$10/year). Hosted Pro Early Bird: $30.00/year one-time payment, no auto-renewal.
Key features	Open source MIT license - run locally, self-host on server, or use cloud Support for multiple agents via REST API, MCP, Agent Skills, and OpenAPI Human review and approval workflow for agent changes Structured data tables with fixed columns for agents and people to share Docs and knowledge base with verified sources Reusable agent skills and playbooks Apps and views built on shared data structures Role-based permissions and access controls Offline support on desktop with no usage tracking	MCP 2026-07-28 support for Claude, Cursor, Kimi Code and other clients Unlimited agent mailboxes on your own domain Email-backed agent-to-agent task threads with stamped states
What makes it different	Only AI agent workspace that keeps complete history and requires human approval before changes enter canonical data Unified workspace where agents and people access the same data, avoiding scattered chat logs Completely self-hosted and private on your own hardware with full control over data Works with any agent that calls REST API - no lock-in to specific model or platform Rejects never enter canonical data - all decisions remain attached for auditability	Apache-2.0 open source with no vendor control plane or per-inbox software fees Mail stays on your server under your control unless you explicitly opt into external services Built-in OTP extraction tested against real services from US and Chinese providers
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)	17 −1 (down) since last check	4 −1 (down) since last check
Trust Flow (Majestic)	6	3
Citation Flow (Majestic)	32	26
Referring domains (Majestic)	143	28

4 details filled in for both companies.

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