What Plakar does

Plakar is a Paris-based, venture-backed open-source software company that builds backup and restore infrastructure centered on its Kloset immutable data store engine. Kloset packages each backup into a self-contained, content-addressable snapshot using a B+ tree spread across packfiles, with multi-layered deduplication via go-cdc-chunkers (FastCDC and JC algorithms benchmarked at over 13 GB/s), client-side encryption (BLAKE3, AES-GCM-SIV, AES-KW, Argon2id) audited by Jean-Philippe Aumasson, compression, and a queryable virtual filesystem that avoids full restoration. The .ptar archive format packages Kloset for portable, standalone use at petabyte scale, while supporting tools include the go-kloset-sdk and Kapsul CLI.

The platform supports backup and restore across filesystems, databases (PostgreSQL, MySQL/MariaDB), SaaS (Notion, Salesforce, Dropbox, Google Drive, OneDrive, iCloud Drive, Proton Drive, Koofr, OpenDrive), object storage (S3, GCS, Azure Blob), Kubernetes clusters, and SFTP, with storage backends spanning local disk, S3-compatible clouds (AWS, MinIO, Vultr, Scaleway), OVHCloud, and others. Plakar distributes the community edition through APT, RPM, Homebrew, AUR, OpenBSD/FreeBSD packages, Go toolchain, and direct binaries, with a self-serve product-led growth motion targeting developers, SREs, sysadmins, and platform engineers.

The company monetizes via Plakar Enterprise and the Plakar Control Plane — a governance layer providing unified resilience posture dashboards, blind spot detection, and compliance enforcement for C-level buyers — sold via a 'Book a Demo' field-sales motion with undisclosed subscription pricing. A secondary monetization vector is the Plakar Vault Protocol, which allows MSPs and cloud providers to offer zero-knowledge managed resilience. Plakar raised a $3M pre-seed led by Seedcamp in May 2025, joined the Linux Foundation and CNCF in January 2026, and operates with a 1-10 person team headquartered at 149 avenue du Maine, 75014 Paris.

Name

Plakar

Legal name

PLAKAR

Website

https://plakar.io

Company type

Private

Founded year

2025

Operating status

Operating

Headcount range

11–50 employees

Short description

Plakar is a Paris-based open-source company that builds Kloset, an immutable, content-addressable data store powering backup and restore with client-side encryption and high-density deduplication, serving developers and enterprise IT buyers through a community edition and a Control Plane governance tier.

Ownership category

akta.pro rank

Product category

Data Backup and Recovery Software

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182), Computer Systems Design and Related Services (5415)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

Backup & Restore Platforms (Cloud Backup) (HDABAIAB)

akta.pro secondary industries

Continuity for SaaS & Cloud Apps (M365/Salesforce Backup) (HDABAIAK), Backup & Recovery Software (HDABAEAD), Cyber Recovery & Ransomware-Resilient Backup Services (BPAEALAG), Hybrid Cloud Storage & Backup Infrastructure (HDABAMAG)

Keywords

• Data backup software
• Encrypted backup platform
• Open source backup
• Disaster recovery software
• Cloud data protection

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Marketing or Sales, Infrastructure, Operations

Revenue model

1. Community Edition (Open Source): Free and open-source software licensed under open-source licenses. Users download and self-host the software. No direct revenue from community users, but drives community growth, contributions, and ecosystem development.
2. Plakar Enterprise (Control Plane): Enterprise version providing centralized backup management, unified resilience posture dashboards, compliance enforcement, and enterprise features such as analytics, monitoring, and alerting. Targets C-level and enterprise IT buyers. Revenue likely derived from subscription licensing, though specific pricing is not publicly disclosed.
3. Plakar Vault Protocol (Managed Provider): MSPs and cloud providers can offer resilience services via the Plakar Vault Protocol, where Plakar may take a revenue share or licensing fee for the protocol. Delegate ops to MSPs while keeping encryption keys.

Pricing tiers

Go-to-market motion2 records

Distribution channels10 records

Marketing channels9 records

Core offering

Plakar provides an open-source backup and restore platform that protects data across on-premises, cloud, and SaaS environments through end-to-end encryption, content-defined chunking deduplication, and immutable snapshots. Its core engine, Kloset, packages each backup into a portable, queryable, cryptographically verifiable data asset, while the enterprise tier adds a centralized Control Plane for unified resilience posture, compliance, and governance.

Product overview

Plakar offers a platform-plus-modules architecture centered on its open-source core backup engine and an enterprise management layer. The core product is Plakar Community, an open-source backup and restore platform built on the Kloset immutable data store engine, which handles deduplication, compression, and end-to-end encryption at petabyte scale. Kloset encapsulates backups as self-contained, queryable snapshots using the proprietary .ptar archive format. Supporting tools include the go-kloset-sdk (Go SDK for building PTAR archives and custom connectors), Kapsul (CLI for PTAR vault management), and go-cdc-chunkers (Content-Defined Chunking library). Plakar Enterprise extends the platform with a centralized Control Plane for C-level backup posture visibility, compliance aggregation, and multi-site management across on-premises, cloud, and SaaS environments. The Plakar Vault Protocol allows delegating resilience to managed service providers while preserving zero-knowledge encryption. Plakar Enterprise for AWS delivers a cloud-native deployment optimized for VPC environments.

Differentiator

Problem solved

Functional benefit

Brands

• Kloset: The immutable data store engine powering Plakar backups. Kloset encapsulates each snapshot into a self-contained, immutable, structured data asset with context, structure, metadata, and integrity.
• Plakar Enterprise
• Plakar Control Plane

Products and services

• Plakar Community Open-source core backup and restore platform providing encrypted, deduplicated, immutable snapshots with a Unix-friendly CLI, web UI, and multi-backend storage support. Written in Go, designed for petabyte-scale workloads across filesystems, databases, SaaS, cloud buckets, and Kubernetes.
• Plakar Enterprise Enterprise-grade backup solution providing centralized backup management, unified resilience posture dashboards, compliance aggregation, and blind spot detection across on-premises, cloud, and SaaS environments. Includes the Plakar Control Plane for C-level visibility.
• Plakar Control Plane Virtual appliance with a web-based interface for centralized backup management across infrastructure. Aggregates metadata from all agents to map real-time protection status, identify blind spots and unbacked assets, and enforce compliance across the entire estate.
• Kloset Immutable data store engine powering Plakar. Packages each backup into a self-contained, immutable, structured data asset with context, structure, metadata, and integrity, providing content-addressable storage, deduplication, compression, and encryption at source.
• Kapsul Command-line tool to create and manage deduplicated, compressed, and encrypted PTAR vaults. Provides PTAR-specific operations from building to restoring and inspecting.
• go-kloset-sdk Go software development kit for building PTAR archives and creating/managing Kloset vaults programmatically. Enables developers to write custom source, destination, and storage connectors.
• go-cdc-chunkers Open-source Go library implementing state-of-the-art Content-Defined Chunking (CDC) algorithms for deduplication. Includes FastCDC and JC variants with benchmarks exceeding 13 GB/s throughput.
• .ptar archive format Plakar's own archive format, a self-contained Kloset container for data. Provides deduplication, compression, and encryption in a standalone file format designed to replace .tgz for petabyte-scale S3 archives.
• Plakar Enterprise for AWS AWS-specific deployment of Plakar Enterprise bringing Cloud-Native Resilience and Zero-Trust security to VPC environments. Available as a preview release.

Quantifiable outcome

• 70% cost reduction in storage costs with high-density efficiency without exposing encryption keys
• +4 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration18 records

Feature11 records

Partnerships

Three partnerships are on record, tiered flagship and core.

• Linux FoundationflagshipStrategic or Co-development Partner · 7 January 2026Plakar officially joined the Linux Foundation as a member in January 2026, marking a pivotal step in establishing an Open Standard for Resilience. Membership supports open-source governance, ecosystem growth, and industry credibility.
• Cloud Native Computing Foundation (CNCF)flagshipStrategic or Co-development Partner · 7 January 2026Plakar joined the CNCF as a member in January 2026 alongside the Linux Foundation, signaling commitment to cloud-native data resilience standards and alignment with the broader container/cloud ecosystem.
• Jean-Philippe Aumasson (Independent Cryptographer)coreStrategic or Co-development PartnerRenowned cryptographer and algorithm author contracted to perform an independent cryptographic audit of Plakar. Confirmed sound overall design and provided recommendations that were implemented, including Argon2id, AES-GCM-SIV, AES-KW, and BLAKE3 adoption. Follow-up review validated the corrected architecture.

Scale indicators7 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Restic: Open-source, Go-based backup program with deduplication and encryption. Plakar benchmarks go-cdc-chunkers against Restic and explicitly positions itself as a faster, more encrypted successor for the same DevOps/SRE persona.
• Borg Backup: Deduplicating, compressing, encrypting backup tool widely used by technical users. Plakar's Kloset engine and go-cdc-chunkers library directly compete with Borg's deduplication and encryption primitives at the CLI level.
• Kopia: Cross-platform open-source backup tool with deduplication, encryption, and cloud storage support. Targets the same SRE/sysadmin audience as Plakar Community with a comparable feature set.
• Duplicati: Open-source backup client supporting multiple protocols and cloud destinations with encryption. Overlaps with Plakar's multi-target storage and SaaS/Cloud backup positioning for technical users.

Broad incumbents

• Veeam: Enterprise backup and data management incumbent with broad virtualization, cloud, and SaaS coverage. Plakar Enterprise directly competes for the same C-level buyer seeking unified backup posture across hybrid environments.
• Rubrik: Cloud-native data management and backup platform serving enterprise IT. Competes with Plakar Enterprise on unified data protection posture, compliance, and ransomware resilience for hybrid estates.
• Commvault: Enterprise data protection and information management incumbent. Competes with Plakar Enterprise on multi-cloud/SaaS backup governance, compliance reporting, and large-scale hybrid estate management.
• Acronis: Backup and cyber protection vendor with broad MSP and enterprise distribution. Comparable to Plakar on combining backup with ransomware protection and to Plakar's Vault Protocol go-to-market via service providers.

Regional players

• Backblaze: Cloud backup and object storage provider primarily serving North America. While Backblaze is a possible S3-compatible storage backend for Plakar, it also competes indirectly as a turnkey backup target for the same SMB/dev persona.

Emerging players

• Velero: CNCF-incubated open-source Kubernetes backup and disaster recovery tool. Directly comparable to Plakar's Kubernetes integration (etcd, manifests, persistent volumes) and shares the cloud-native ecosystem context.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• GitHubgithub.com/PlakarKorp
• Xx.com/PlakarKorp
• LinkedInlinkedin.com/company/plakarkorp

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds1 record

Investors10 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Plakar