Replicache

Replicache remains usable client-side sync technology, but Rocicorp states it is in maintenance mode, will receive no new features, no longer charges for use, and directs existing users toward Zero as they are able.¹¹¹²

For: Teams already operating Replicache that need lifecycle support, risk control, and a deliberate migration path

• An installed application has unsent offline mutations or client data that cannot be safely migrated.
• The successor's write, conflict, authorization, and backend model differs materially from the current system.
• A maintenance window, dual-run period, rollback plan, and user communication are unavailable.
• Security, browser, dependency, or platform changes make continued operation riskier than migration.

• Existing offline behaviorInstalled applications may already rely on Replicache's local optimistic reads, writes, push, and pull behavior.¹¹
• Backend flexibilityReplicache was designed as client-side technology that integrates with application-owned backend stacks.¹¹
• Migration evidenceThe now-public code and archived repository can support maintenance and migration analysis.¹²

Replicache is open-source software with no separate software license fee under its current maintenance status; the remaining cost is the existing application's backend, operations, support, and migration work. There is no current hosted commercial plan to estimate.¹¹

Current software charge

No charge for use under the current open-sourced maintenance model¹¹

Primary cost

Existing infrastructure, maintenance risk, migration engineering, and user-data continuity¹¹