ZACLYS
ZACLYS is a French, privately-held provider of privacy-focused, open-source cloud hosting and collaboration services for individuals, families, and 300+ French professional organizations, built on a Nextcloud foundation with freemium subscriptions (€5-€10/year) and dedicated servers at €260-€990/year.
- Company typePrivate
- Founded2010
- HeadquartersMelisey, France
- Headcount1–10
- GTM typeB2B and B2C
- OfferingSoftware
What ZACLYS does
ZACLYS is a French, privately-held provider of open-source, privacy-respecting cloud hosting and collaboration services, founded in 2010 and operating for over 15 years without external funding. The company operates from Melisey (Haute-Saône) with backup data infrastructure in Roubaix and Strasbourg, and is a member of the CHATONS ethical-hosting collective. Its platform is built on a Nextcloud foundation, supplemented with integrated open-source components including OnlyOffice (collaborative office), BigBlueButton (video conferencing), OpenProject (project management), Mattermost, Zulip, Mastodon, and a broad catalog of Nextcloud applications.
The product portfolio is structured in three tiers: (1) a free consumer cloud ("Nimbus") with 2GB base storage, email, photo albums, blogs, RSS, file transfer, Git hosting, password management, and event management under the ZSuite umbrella; (2) a subscriber tier ("Nimbus+++") unlocking premium apps such as OnlyOffice, Deck, Forms, Talk, Passman, MindMap, Draw.io, and Polls at €5-€10/year; and (3) a professional Cloud Pro tier with three dedicated-server SKUs (Stratus Mini at €260 HT/year, Alto Classic at €480 HT/year, Cirrus Custom at €990 HT/year) targeting collectivités, associations, PME, and French institutions with SSO/SAML, LDAP/AD integration, and geo-redundant backups.
The business model is freemium with subscription recurring revenue across two distinct GTM motions: product-led growth for individual users (free 2GB plus €5-€10/year upgrades) and direct sales for professional customers (€260-€990/year per server plus add-ons like OnlyOffice, Visio at €0.42 HT/hour/participant, and storage extensions at €1/GB/year). ZACLYS reports 25,000+ registered users, ~3,000 paying subscribers, and 300+ professional organizations across France, monetizing exclusively through subscriptions with no advertising or data monetization.
ZACLYS firmographics
Firmographics- Name
- ZACLYS
- Legal name
- Zaclys
- Website
- https://zaclys.com
- Company type
- Private
- Founded year
- 2010
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- ZACLYS is a French, privately-held provider of privacy-focused, open-source cloud hosting and collaboration services for individuals, families, and 300+ French professional organizations, built on a Nextcloud foundation with freemium subscriptions (€5-€10/year) and dedicated servers at €260-€990/year.
- Ownership category
- akta.pro rank
Where ZACLYS is headquartered
LocationHeadquarters
- HQ city
- Melisey
- HQ country
- France
- HQ region
- Europe
Offices3 records
Markets served
ZACLYS business model
Business model- GTM type
- B2B and B2C
- Offering type
- Software
- Cost components
- Infrastructure, Technology or R&D, Personnel, Operations, Marketing or Sales
Revenue model
- Subscription Cloud Services (Perso): Freemium model with free 2GB storage for all users. Paid tiers include Argent (5GB, 5€/year), Or (10GB, 10€/year), and additional storage at 1€/GB/year. Subscribers unlock premium applications and services.
- Professional Dedicated Servers: Three-tier dedicated server offerings: Stratus Mini (260€/year HT), Alto Classic (480€/year HT), and Cirrus Custom (990€/year HT). Additional revenue from optional services like OnlyOffice and Visio, plus resource upgrades.
- Professional Services: Additional server services including Mattermost, Mastodon, Zulip, OpenProject, WordPress, LAMP stack, osTicket, and phpBB forums, available as add-ons to cloud packages or standalone subscriptions.
- Storage Extensions: Additional storage space sold at 1€/GB/year for personal accounts, with bulk discounts for larger allocations (20% off at 100GB+).
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Annual | Free Cloud - 2GB storage |
| Subscription | Annual | Argent Subscription - 5GB storage |
| Subscription | Annual | Or Subscription - 10GB storage |
| Subscription | Annual | Storage Extension +10GB |
| Subscription | Annual | Storage Extension +60GB |
| Subscription | Annual | Stratus Mini (2026) - Dedicated Cloud |
| Subscription | Annual | Alto Classic (2026) - Dedicated Cloud |
| Subscription | Annual | Cirrus Custom (2026) - Dedicated Cloud |
| Subscription | Annual | OpenProject Server |
| Subscription | Annual | Pack 2026 Offers |
Go-to-market motion3 records
Distribution channels3 records
Marketing channels6 records
ZACLYS product offering
Product offeringCore offering
ZACLYS provides open-source, privacy-focused cloud hosting services based on Nextcloud, including cloud storage, email, video conferencing, collaborative office tools, and dedicated servers for individuals, families, and French professional organizations. The offering spans a freemium personal cloud (Nimbus line) with optional paid subscriptions and tiered dedicated professional cloud servers (Stratus, Alto, Cirrus tiers) with SSO/SAML authentication, automated backups, and a wide ecosystem of integrated open-source applications.
Product overview
ZACLYS is a French provider of free, open-source, and privacy-respecting web services operating as a Nextcloud-based cloud platform. The offering is organized into three tiers: (1) a free cloud service (Nimbus) with basic storage, email, photo albums, blogs, RSS feeds, file sending, software forge, virtual USB, password management, and event management through the ZSuite application suite; (2) a subscriber tier (Nimbus++/Cloud) adding collaborative applications including OnlyOffice document editing, Deck task boards, Cookbook recipes, Forms surveys, Talk chat/video, Notes, Passman passwords, Text collaborative editor, Polls scheduling, MindMap diagrams, Cospend expense sharing, Audio Player, and Draw.io diagramming; and (3) dedicated professional cloud servers (Cloud Pro) in three tiers (Stratus/Mini, Alto/Classic, Cirrus/Custom) with full Nextcloud administration, optional OnlyOffice, and add-on services including ZLettre emailing, ZSites web hosting, Mattermost, Mastodon, LAMP servers, Zulip chat, MediaWiki wikis, osTicket support, PhpBB forums, and OpenProject project management. The platform targets individuals, families, small structures, and professionals including public institutions and associations.
Differentiator
Problem solved
Functional benefit
Brands
- ZSuite: Cloud services suite including cloud storage, emails, and applications
- ZMail
- ZVisio
- BlogZ
- Flux
- Envoi
- ZGit
- Album
- Zclé
- ZSecrets
- MobiliZon
- zoTop
- ZLettre
- ZSites
- Nimbus
- Stratus
- Alto
- Cirrus
- OnlyOffice
Products and services
- ZSuite Integrated cloud suite bundling cloud storage, email, video conferencing, blogs, RSS, file transfer, Git forge, photo albums, virtual USB key, password management, and event management applications for personal users on a free-with-subscription model.
- Nimbus Cloud Nextcloud-based personal cloud storage product line with a free 2GB tier and scalable paid subscription tiers (Argent, Or) including file synchronization, shared calendars, address books, photo galleries, and subscriber-exclusive applications.
- Cloud Pro (Stratus, Alto, Cirrus tiers) Dedicated Nextcloud cloud servers for professionals, institutions, companies, and associations with three tiers (Stratus Mini, Alto Classic, Cirrus Custom), unlimited users, full admin control, SSO/SAML and Active Directory compatibility, automated multi-site backups, and optional OnlyOffice and BigBlueButton integration.
- ZMail Privacy-focused email mailbox service available as part of the ZSuite or standalone, offered to personal users and professionals with French data residency.
- ZVisio (BigBlueButton) Video conferencing and chat service built on BigBlueButton, offered with on-demand per-second-per-participant billing or dedicated server options for professional use.
- BlogZ Blog platform service using WriteFreely software, enabling personal users to create and manage blogs within the ZACLYS cloud environment.
- Flux RSS feed reader service built on FreshRSS that aggregates and reads RSS feeds from multiple sources for personal users.
- Envoi Large file transfer service for sharing big files with others via download links.
- ZGit
Quantifiable outcome
- 15+ years of continuous operation sustained by subscriber revenue without venture capital
- +2 more outcomes
Companies that use ZACLYS
Customer profileNamed customers6 records
Segments4 records
Ideal customer profiles2 records
ZACLYS technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration6 records
Feature6 records
ZACLYS partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core and major.
- CHATONS (Collectif des Hébergeurs Alternatifs, Transparents, Ouverts, Neutres et Solidaires)coreZACLYS is a member of the CHATONS collective, a network of ethical, transparent, open, neutral, and solidarity-based hosting providers in France. This partnership defines ZACLYS's positioning as a privacy-respecting, non-commercial alternative to major cloud providers.
- NextcloudcoreCore infrastructure partner providing the Nextcloud platform that powers ZACLYS's cloud services. ZACLYS offers both Nextcloud and ownCloud options for professional servers.
- OnlyOfficemajorIntegrated collaborative office suite available as an option on ZACLYS cloud services, enabling real-time document co-editing. Available as shared (+50-60€/year) or dedicated (+150-170€/year) server options.
- OpenProjectmajorOpen-source project management platform hosted on ZACLYS dedicated servers, offering project planning, Gantt charts, Scrum/Kanban boards, and team collaboration tools.
- BigBlueButtonmajorVideo conferencing platform available as ZVisio service, with on-demand billing at 0.42€/hour/participant or dedicated server options starting at 420€/year with 50% discount when combined with Nextcloud.
Scale indicators6 records
Recent moves5 records
Expansion highlights5 records
ZACLYS competitors and assessment
Company assessmentDirect peers
- Kolab Now: Swiss-hosted, privacy-focused email, calendar, file storage, and collaboration platform offered as a subscription service to individuals and small organizations. Comparable to Zaclys in product mix (email + cloud + collaboration) and sovereign-cloud positioning.
- Cozy Cloud: French personal cloud service built around open-source, privacy-respecting cloud storage, file sync, and connected apps for individuals and families. Closely comparable to Zaclys in geography, target audience, and sovereign/privacy positioning, though typically more consumer-focused.
- Infomaniak: Swiss cloud and email provider offering privacy-focused hosting, cloud storage, collaboration tools, and dedicated servers with strong data-sovereignty positioning across Europe. Comparable to Zaclys in ethical/sovereign stance and product breadth (email, cloud, video), but at materially larger scale.
- Disroot: Non-profit, privacy-focused cloud and email provider based in the Netherlands offering Nextcloud-based storage, email, and collaboration tools to a privacy-conscious community. Closely comparable to Zaclys's CHATONS-style positioning, though serving a non-French European audience.
- Nextcloud: Open-source content collaboration platform provider that also offers its own hosted Nextcloud services and partner program for resellers like Zaclys. Directly comparable to Zaclys's Cloud Pro offering, and the underlying technology partner powering much of Zaclys's product suite.
- Mailo: French privacy-respecting email and personal cloud service targeting individuals, families, and professionals. Comparable to Zaclys's ZMail + ZSuite positioning for the Francophone privacy market, with similar ARPU economics.
Broad incumbents
- Scaleway: French cloud provider offering dedicated servers, object storage, and managed services with a European sovereignty stance. Comparable to Zaclys as a sovereign-French cloud option but with broader infrastructure portfolio and pricing power.
- Proton: Much larger Swiss privacy-focused provider offering encrypted email (Proton Mail), cloud storage (Proton Drive), VPN, and calendar services. Overlaps with Zaclys's privacy-respecting cloud and email offering, but operates at hyperscaler-style scale and breadth.
- OVHcloud: Major French cloud infrastructure provider offering dedicated servers, hosted private cloud, and collaboration solutions across Europe. Comparable as a sovereign-cloud incumbent in Zaclys's home market and its underlying infrastructure provider.
- Hetzner: Large German-based hosting and cloud infrastructure provider offering dedicated servers, cloud hosting, and storage across EU data centers. Comparable to Zaclys's professional dedicated-server tier but at materially larger scale and lower price points.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
ZACLYS social profiles
Digital presenceZACLYS compliance and trust
Trust signalCompliance3 records
ZACLYS financial estimates
Financial estimateRevenue estimate
Valuation estimate
ZACLYS leadership team
Management profileNumber of profiles
ZACLYS funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
ZACLYS M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about ZACLYS
What does ZACLYS do?
ZACLYS provides open-source, privacy-focused cloud hosting services based on Nextcloud, including cloud storage, email, video conferencing, collaborative office tools, and dedicated servers for individuals, families, and French professional organizations. The offering spans a freemium personal cloud (Nimbus line) with optional paid subscriptions and tiered dedicated professional cloud servers (Stratus, Alto, Cirrus tiers) with SSO/SAML authentication, automated backups, and a wide ecosystem of integrated open-source applications.
Is ZACLYS a public or private company?
ZACLYS is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was ZACLYS founded?
ZACLYS was founded in 2010. It employs 1 to 10 people.
Where is ZACLYS based?
ZACLYS is headquartered in Melisey, France, in the Europe region.
How does ZACLYS make money?
Four revenue lines are on record. Subscription Cloud Services (Perso) is the primary driver. The others are professional Dedicated Servers, professional Services and storage Extensions.
Who are ZACLYS's main competitors?
Direct peers on record are Kolab Now, Cozy Cloud, Infomaniak, Disroot, Nextcloud and Mailo. Broad incumbents are Scaleway, Proton, OVHcloud and Hetzner.
Does ZACLYS have an API?
No public API is recorded for ZACLYS.