AWS Wickr is Amazon's end-to-end encrypted messaging and calling service, with AWS WickrGov in GovCloud. Pages here cover replacing it with self-hosted Matrix and Element or Rocket.Chat.
Comparing Wickr with a self-hosted Matrix homeserver and Element clients for encrypted messaging: end-to-end encryption in both, who holds the keys and servers, federation, data retention, and Element Server Suite editions against Wickr Standard or Premium.
Wickr against Rocket.Chat for government and defense teams: Rocket.Chat's end-to-end encryption, Government and Defense plans and air-gapped deployments compared with WickrGov in GovCloud and the self-hosted Wickr Enterprise option.
Moving a Wickr network to a self-hosted Matrix homeserver: what retained data (if retention was on) can be kept, re-creating rooms and security groups, enrolling users and devices with SSO, setting key backup policy and running the two side by side.
Cost of ownership by component: Wickr per-user plans and add-ons, against Element Server Suite or community Synapse on your own Kubernetes, PostgreSQL, TURN servers, push notification setup and the people who keep it patched.
For defense and public safety units choosing between WickrGov in GovCloud, self-hosted Wickr Enterprise and an open-source stack they operate themselves: Element Server Suite Sovereign and Rocket.Chat Defense for disconnected and coalition networks.
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