head to head/Developer Tools

observatory vs OwnMailServer

Neck and neck on boosts. Profiles, pricing and deals below.

observatory

Independent drift detection for public MCP servers - free, read-only, reproducible.

community boosts

⚡ 0

pricing

Freemium · Free public API

what it is

Dominion Observatory - independent, read-only measurement of public MCP servers. Signed tool-definition captures, canonicalization-hashed so any third party can recompute them, and drift detection when a server's tools change. Free public API, no account required.

OwnMailServer

Meta Muse Email Connector: Deliverability in Muse

community boosts

⚡ 0

pricing

Paid

what it is

A Meta Muse connector (MCP server) for your email: ask about delivery, bounces, complaints and DNS health in plain English. Read-only, included with sending.