Kinto

Kinto is a self-hosted, generic JSON storage service that exposes a REST API for storing and querying records, designed to support synchronization and offline-first workflows. It provides server-side features like versioning, access control, and validation so apps can reliably store structured data and sync changes across clients.

Key Features

• RESTful JSON storage with collections/records, filtering, sorting, pagination, and field selection
• Concurrency control via ETag and conflict detection for safe multi-client updates
• Change tracking and incremental sync primitives (timestamps/last-modified)
• Built-in authentication and authorization (pluggable), including per-bucket/collection/record permissions
• Schema validation and payload size controls to enforce data contracts
• Pluggable storage backends and caches (commonly PostgreSQL and Redis)
• Event and webhook support via plugins for integrating with external systems

Use Cases

• Building offline-first apps that need a sync-capable JSON backend
• Central configuration/feature data distribution to many clients
• Lightweight backend for structured app data without designing custom endpoints

Limitations and Considerations

• Not a full BaaS: focused on JSON records/sync patterns (not file storage or realtime pub/sub)
• Functionality often depends on selecting and configuring the right plugins (auth, webhooks, etc.)

Kinto is a good fit when you need a robust, sync-friendly JSON store with strong API semantics, versioning, and fine-grained permissions. It is commonly used as a dependable building block for data distribution and client synchronization scenarios.