Quemsi

Quemsi is a hybrid database backup and restore service built around tagged snapshots and configurable flows. It is best suited to developers and organizations managing MySQL, PostgreSQL, SQL Server, or MongoDB who want backups to run within their own infrastructure.

Its strongest case is the combination of user-controlled storage and a web interface for tracking and restoring snapshots; the free Solo plan’s single-user limit makes it less suitable for teams collaborating in the product.

Overview

Quemsi pairs a cloud service for metadata with an agent that performs backup and restore operations inside the user's infrastructure. That separation lets users coordinate work through a web UI without sending database content to the cloud service. It is a practical fit when infrastructure control matters as much as a central view of recovery points.

Key features

Snapshots can be tagged and viewed on a timeline, with one-click restore through the web UI. Tags and chronology help distinguish recovery points, while the direct restore action keeps recovery accessible without leaving the interface.

Backup and restore flows can include steps such as stopping services or running scripts. This flexibility suits environments where database operations need to fit a broader sequence, though users must configure those steps for their own workflows.

Storage options include AWS S3, Azure Blob, and local drives under the user's control. Quemsi's architecture uses TLS 1.3 for agent-to-cloud communication, certificate-based mutual TLS for agents, and SHA-256 checksums to verify backup integrity. Its agent is open source, so users can audit or modify it, or build it from source.

The agent runs on Windows, Linux, and macOS, and can also run as a Java JAR or Docker container. The architecture page gives example REST endpoints for executing flows and querying agents and flow executions; full API documentation is planned for the future, so API-focused users should account for that limitation.

Pricing

Quemsi uses a freemium model. Solo costs nothing and includes unlimited databases, environments, and flows, with a single user and community support. The site says the plan has no time limit and includes core features without restriction. It is a substantial allowance for an individual developer, but the one-seat cap rules it out as a shared team workspace.

Enterprise has custom pricing and includes everything in Solo, plus detailed authorization, CI/CD integration, extra functionality, priority support, and more organizational features. It is aimed at companies that need those controls and integrations; organizations should weigh the custom-price model against their requirements.

Platforms

Quemsi supports API, Linux, macOS, web, and Windows. Its agent options cover Windows, Linux, and macOS, with Java JAR and Docker deployment also available. This mix supports varied deployment environments, while the web UI provides the central way to view snapshots and manage restores.

Who it's for

Solo developers can use the free plan to manage multiple databases, environments, and flows without a time limit, provided one user is enough. Companies may find Enterprise a better fit when detailed authorization, CI/CD integration, or priority support is needed. Quemsi is less appropriate for teams that need several users on the free plan or for buyers who require full API documentation before adopting an API-driven workflow.

Pros and cons

• Pros: Unlimited databases, environments, and flows on the free Solo plan give an individual room to manage multiple backup workflows.
• Pros: User-controlled storage and in-infrastructure backup operations keep database content separate from the cloud metadata service.
• Pros: Custom flow steps, open-source agent code, and integrity checks support operational flexibility and inspection.
• Cons: Solo is limited to one user, which makes it a poor fit for shared use without moving to Enterprise.
• Cons: Full API documentation is still planned, limiting the appeal for teams that need documented endpoints before integrating.
• Cons: Enterprise pricing is custom, so companies cannot assess its cost from a fixed published price.

Alternatives

For a wider category comparison, browse Database Backup Software.

• MySQL is worth considering for its GPL-licensed Community Edition, which includes SQL and NoSQL applications plus replication and high-availability components.
• DBDock is a free, MIT-licensed, self-hosted CLI option for readers who prefer that deployment model.
• Percona Backup for MongoDB is another free option for readers focused on MongoDB backup.
• SqlBak may suit users who want a defined free allowance of one server, two databases, and one-month backup history, with a Standard plan at $6 a month.
• WAL-G is a free, Apache License 2.0 database archiving and restoration tool for readers who prefer that approach; LZO support uses GPL 3.0+.
• DBAegis offers a free Community plan with one admin, three connections, and three schedules for users whose needs fit those caps.
• mariadb-backup is a free option for physical MariaDB backups on Linux and Windows.
• Barman is a free open-source PostgreSQL disaster recovery tool for Linux and self-hosted environments.

Verdict

Choose Quemsi if you are an individual developer who wants a free, single-user way to organize snapshots and database restore flows across its four supported database systems. Its combination of customizable operations, user-controlled storage, and an agent that works inside your infrastructure is the main reason to pick it. Look elsewhere if several users need access on the free tier or if your team depends on full API documentation before integrating.