Quemsi

Overview

Quemsi is a database backup and restore service built around tagged snapshots, customizable flows, and storage chosen by the user. It is a strong fit for individual developers and companies that need to manage backups for MySQL, PostgreSQL, SQL Server, or MongoDB; its main trade-off is that the free plan allows only one user.

The hybrid design keeps database content and backup operations within the user's infrastructure while the cloud service handles metadata. That balance will appeal to teams that want a web interface without handing database contents to a hosted service.

Key features

Snapshots are tagged and arranged on a timeline, with one-click restore through the web UI. The timeline makes backup points easier to distinguish, while direct restore is useful when recovery is needed without building a separate process around each snapshot.

Flows can include custom steps such as stopping services or running scripts. That makes Quemsi more suitable than a fixed backup routine for environments where a safe backup or restore depends on surrounding operations, but those workflows need to be designed for the systems in use.

Backups can be stored in AWS S3, Azure Blob, or local drives under the user's control. The agent performs backup and restore work inside the user's infrastructure; the cloud service manages metadata rather than database content. Agent-to-cloud communication uses TLS 1.3, agents authenticate with certificate-based mutual TLS, and SHA-256 checksums verify backup integrity.

Quemsi describes its agent as open source, allowing users to audit, modify, or build it from source. The architecture page also gives example REST endpoints for running flows and querying agents and executions, though full API documentation is planned for the future. Teams wanting to build API-driven automation should weigh that documentation gap before relying on the API.

Pricing

Solo: free. It includes unlimited databases, environments, and flows, plus community support, with no time limit and no restriction on core features. The single-user limit makes it a generous option for an individual developer, but not a shared workspace for a team.

Enterprise: custom pricing. It includes everything in Solo, along with detailed authorization, CI/CD integration, extra functionality, priority support, and more organizational features. This is the more appropriate tier for companies that need controlled access or deployment-pipeline integration; those features are not included in Solo.

Platforms

Quemsi supports API, Linux, macOS, web, and Windows. Its agent runs on Windows, Linux, and macOS, and is also available as a Java JAR or Docker container. That range gives teams options for fitting the agent into different environments, while the web UI provides the interface for managing snapshots and restores.

Who it's for

Solo is aimed at individual developers who want backup and restore flows across multiple databases or environments without a subscription deadline. Enterprise is aimed at companies that need finer authorization, CI/CD integration, organizational features, or priority support. Quemsi is less suitable for teams that need several users on a free plan or fully documented REST APIs today.

Pros and cons

Pros

• Unrestricted core features for one user: Solo includes unlimited databases, environments, and flows with no time limit, making it practical for individual development work.
• Storage remains under user control: AWS S3, Azure Blob, and local drives are supported, while the cloud service handles metadata rather than database content.
• Custom workflows: Flows can include service stops and scripts, accommodating operational steps around backup and restore.
• Auditable agent: The agent can be audited, modified, or built from source, and the architecture uses TLS 1.3, mutual TLS, and SHA-256 integrity checks.

Cons

• Solo is single-user: Unlimited databases and flows do not make it a shared plan for a team.
• Key company features require Enterprise: Detailed authorization, CI/CD integration, and priority support are reserved for the custom-priced tier.
• API documentation is not complete: Example endpoints are provided, but full documentation is still forthcoming, which may slow teams planning API-based automation.

Alternatives

Compare database backup software if you want to assess more tools in the category. Choose MySQL if you want a database platform with a free Community Edition and replication and high-availability components. DBDock is a free, MIT-licensed, self-hosted CLI option. SqlBak may suit readers who prefer a capped free plan: it covers one server and two databases with one-month backup history, and its Standard plan costs $6 a month.

Databasus is worth considering if you want free, open-source software with all described product features. DBAegis may fit a small PostgreSQL setup that can work within its Community plan's one-admin, three-connection, and three-schedule limits. mariadb-backup is a focused free choice for physical MariaDB backups on Linux or Windows. Percona Backup for MongoDB is another free option if your focus is MongoDB. For PostgreSQL cluster backup and recovery, consider pg_probackup, a free utility for that purpose.

Verdict

Quemsi is a compelling choice for individual developers who want flexible database backup flows, user-controlled storage, and a no-time-limit plan with broad core features. Companies should look elsewhere if they need team access, detailed authorization, CI/CD integration, or priority support without moving to a custom-priced Enterprise plan.