FleetDM vs openarchiver

FleetDM is an open-source device management platform built on osquery for managing macOS, Linux, Windows, iOS, and Android devices from one console.…

Best for FleetDM: FleetDM fits IT and security teams needing cross-platform device inventory, patch and vulnerability management, and live queries across macOS, Linux, Windows, iOS, and Android, with data reported back in under 30 seconds and a free open-source tier the company states will always remain free.
Best for openarchiver: openarchiver fits IT and compliance teams needing to archive email from Microsoft 365, Google Workspace, or IMAP, or import historical PST/EML files, for backup, eDiscovery, and full-text search.

At a Glance

 FleetDMopenarchiver
Primary categorySecuritySecurity
RatingNot documentedNot documented
Pricing modelFreemium (Open Source core plus paid tiers)Open Source
Starting priceFree (self-hosted); Premium from $7/host/monthFree (self-hosted)
Free planYesNot documented
Free trialNot documentedNot documented
PlatformsWeb, iOS, Android, Mac, WindowsNot documented
Team collaborationNot documentedNot documented
AI featuresNot documentedNot documented
Public APIYesNot documented

Key Differences

Core Purpose

FleetDM: FleetDM manages and monitors physical and virtual endpoint devices — inventory, patches, vulnerabilities, and live diagnostics — built on the osquery agent.

openarchiver: openarchiver archives email communications for backup, compliance, and eDiscovery, with full-text search across archived messages.

Device management and email archiving are distinct IT disciplines with different data models, so the right tool depends entirely on what asset needs managing.

Deployment Options

FleetDM: FleetDM can be run as a self-hosted open-source deployment or as a hosted cloud service.

openarchiver: openarchiver is documented as self-hosted, with no managed cloud version documented.

Having both self-hosted and managed cloud options gives teams flexibility to start without infrastructure and migrate later if needed.

Pricing Transparency

FleetDM: FleetDM's Free, open-source tier is stated to "always remain free," with a custom-priced Premium tier for additional management and automation features.

openarchiver: openarchiver is tagged as freemium, but no specific pricing plans are documented.

An explicit commitment to a permanently free tier gives buyers more confidence in long-term cost planning than an undocumented freemium model.

Scale and Adoption Evidence

FleetDM: FleetDM states it is used by 1,300+ organizations across 90+ countries, managing over 2,000,000 devices.

openarchiver: openarchiver does not publish comparable adoption or scale figures in the available facts.

Publicly stated adoption numbers can serve as a proof point for enterprise buyers evaluating vendor maturity.

Automation and API

FleetDM: FleetDM device configuration and policies can be managed as code and automated via a single REST API, with live queries and scripting supported against endpoints.

openarchiver: openarchiver does not document a REST API or infrastructure-as-code workflow in the available facts.

API-driven, infrastructure-as-code management matters for teams that want to automate device policy changes at scale rather than click through a UI.

Feature-by-Feature

Core Capability

FeatureFleetDMopenarchiver
Cross-platform device inventory (macOS/Linux/Windows/iOS/Android)AvailableUnavailable
Email archiving & eDiscoveryUnavailableAvailable
Patch and vulnerability managementAvailableUnavailable
Full-text searchNot documentedAvailable

Automation & API

FeatureFleetDMopenarchiver
REST API for automationAvailableNot documented
Infrastructure-as-code managementAvailableNot documented
Live queries and diagnosticsAvailableUnavailable
Real-time reporting (under 30 seconds)AvailableNot documented

Deployment & Pricing

FeatureFleetDMopenarchiver
Self-hosted optionAvailableAvailable
Managed cloud optionAvailableNot documented
Free tier explicitly stated to remain freeAvailableNot documented
Published pricing tiersLimitedNot documented

Pricing Compared

Starting price reflects the lowest paid tier, not the full cost for every team size or usage level.

FleetDM

Free — $0/host/month N/A
Premium — From $7/host/month Monthly per host
Custom — Contact sales Custom

openarchiver

Self-Hosted Community — Free N/A

Pros & Cons

FleetDM

Pros

  • Free, MIT-licensed open-source core with no vendor lock-in
  • Deep, SQL-queryable endpoint visibility powered by osquery
  • API-first, GitOps-native design fits DevOps and engineering-led IT teams
  • Single console covers nearly every major desktop and mobile operating system

Cons

  • Steeper learning curve for non-technical IT admins compared to turnkey MDMs like Jamf or Kandji
  • Premium features such as MDM migration, BYOD, and vulnerability scanning require a paid license starting at $7/host/month
  • Fleet's own managed cloud hosting is currently limited to organizations with 700+ hosts
  • Self-hosted deployments require infrastructure setup and ongoing maintenance

openarchiver

Pros

  • Fully open source with no license fee for the core platform
  • Full data ownership and sovereignty since everything is self-hosted
  • Tamper-evident storage and audit trails suited to compliance and eDiscovery needs
  • Supports major mail platforms including Google Workspace, Microsoft 365, and IMAP
  • Portable .eml storage format avoids vendor lock-in

Cons

  • Requires self-hosting expertise and infrastructure to operate reliably
  • No official hosted cloud offering or published SaaS pricing tier
  • Smaller company and community compared to established commercial archiving vendors
  • Enterprise support depends on a partner program rather than a large in-house support team
  • Newer project with a shorter track record than long-established archiving suites

Use Cases

Choose FleetDM: FleetDM fits IT and security teams needing cross-platform device inventory, patch and vulnerability management, and live queries across macOS, Linux, Windows, iOS, and Android, with data reported back in under 30 seconds and a free open-source tier the company states will always remain free.
Choose openarchiver: openarchiver fits IT and compliance teams needing to archive email from Microsoft 365, Google Workspace, or IMAP, or import historical PST/EML files, for backup, eDiscovery, and full-text search.
Need both: An IT department could run FleetDM to manage and patch its fleet of employee devices while separately running openarchiver to archive company email for compliance and legal discovery — two distinct but complementary parts of an organization's IT and compliance stack.

FleetDM

  • IT and security fleet visibility — Get real-time, SQL-queryable visibility into device state across an entire organization's endpoints.
  • Cross-platform MDM for engineering-led organizations — Manage enrollment, configuration, and software deployment across Apple, Windows, Linux, and mobile devices via GitOps.
  • Continuous vulnerability and compliance management — Continuously scan installed software for known vulnerabilities and enforce configuration policies.

openarchiver

  • Regulatory email retention — Meet legal and regulatory requirements to retain and produce email records for a defined retention period.
  • Litigation holds and eDiscovery — Search and export tamper-evident email archives with a verifiable chain of custody during legal disputes.
  • Self-hosted mailbox migration and backup — Archive mailboxes before decommissioning accounts or migrating between email platforms, preserving full-text searchable history.

Frequently Asked Questions

Are FleetDM and openarchiver competitors?

No. FleetDM manages endpoint devices (inventory, patching, vulnerabilities), while openarchiver archives email for compliance and eDiscovery. They cover different parts of an IT and compliance stack.

Is FleetDM free to use?

Fleet maintains a free, open-source version that the company states will always be free, alongside a custom-priced Premium tier with additional management and automation features.

Does openarchiver publish its pricing?

No specific pricing plans are documented for openarchiver, even though it's tagged as freemium.

Can either tool be self-hosted?

Yes, both can. FleetDM supports self-hosted or hosted cloud deployment, while openarchiver is documented as self-hosted with no managed cloud option listed.

Which tool has a documented REST API?

FleetDM documents a single REST API supporting infrastructure-as-code device management and automation. openarchiver does not document a comparable API in the available facts.

Would an organization need both tools?

Many IT departments would run both for different purposes — FleetDM to manage and secure employee devices, and openarchiver to archive email communications for legal and compliance retention requirements.

Read the full FleetDM review · Read the full openarchiver review