Kinto

Kinto provides a simple HTTP‑based service for storing arbitrary JSON objects. Clients can create, read, update, and delete records organized into collections within buckets, and the server handles conflict‑free synchronization across multiple devices. Permissions are inherited from buckets to collections and records, and groups can be used to share data with other users.

The software is written in Python 3.10+ and can run with an in‑memory backend for development or a PostgreSQL 9.5+ backend for production deployments. It is distributed under the Apache‑2.0 license, is self‑hostable, and offers a free tier without subscription requirements. Documentation includes tutorials, API reference, and configuration guides, and the project is maintained with continuous‑integration testing and community support channels.

Kinto is suited for developers who need a lightweight, schema‑agnostic storage layer that can be synchronized and shared across clients, especially when they prefer to run the service on their own infrastructure.