Store and share your organization's files in a sovereign cloud.

Centralize administrative documents, user files, and activity reports in an environment hosted in France, accessible to your employees, volunteers, and branches.

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Certification HDS, Hébergeur de Données de Santé
HDS certified (all 6 levels)
ISO 27001 & ISO 9001 certified
Advanced protection (encryption, antivirus, traceability)
100% hosted in France

Associations and NGOs face critical challenges.

User files, member lists, grant applications, activity reports: associations manage sensitive data with limited resources. Voltn (formerly NetExplorer) hosts them in a sovereign cloud built to last.

Protecting beneficiary and donor data

Social situations, donor bank details, member files: association data is deeply personal. Every file involves the association's liability and the trust of those it supports.

Distributed teams and rotating volunteers

Employees, volunteers, and local branches: teams change and access must keep pace. A departing volunteer must not take access to files with them.

Health data and the medico-social sector

Non-profit nursing homes, home care, child protection: the medico-social sector handles health data subject to mandatory HDS-certified hosting. A general-purpose cloud is not enough.

Funder trust and transparency

Public grants, international donors, sponsors: every funding source requires reports and supporting documentation. Document traceability becomes a mark of reliability.

Limited resources, growing demands

Cyberattacks do not spare the non-profit sector, and free consumer tools offer no contracts, guarantees, or compliance. You need a professional tool, without unnecessary complexity.
Conformité au RGPD

GDPR

The Voltn sovereign cloud processes its clients' personal data only within the scope of the services provided. Individuals authorized to handle this data are subject to a legal obligation of confidentiality.

It guarantees

Protecting the data of members, beneficiaries, and donors
A binding European legal framework
Effective rights for the individuals concerned

Who is affected?

Any association managing a database of members or donors
Organizations supporting vulnerable populations
NGOs collecting data for their missions

Risks of non-compliance

CNIL sanctions
Association liability claims
Loss of member and donor trust
Certification ISO 27001

ISO 27001 standard

The ISO 27001 standard attests to an audited and proven information security management system. At Voltn, it covers the entire platform, from the data center to the software.

It guarantees

Information security certified by an independent audit
Cyber risk management
Continuous improvement of security processes

Who is affected?

Associations managing sensitive data
Organizations meeting the requirements of their funders
NGOs subject to audits by their donors

Risk in case of non-compliance

No audited evidence in the event of an incident
Reduced reassurance for lenders
Difficulty demonstrating risk management
Certification HDS, Hébergeur de Données de Santé

HDS

The Health Data Hosting (HDS) certification confirms Voltn's compliance with the requirements for hosting personal health data. It covers all six activities in the framework, from the data center to the software.

It guarantees

A certified framework for health data hosting
The confidentiality and availability of this data
Compliance with the French legal framework (Article L1111-8)

Who is affected?

Medico-social organizations (nursing homes, home care, disability services)
Child protection organizations
Any association hosting health data for its users

Risk of non-compliance

Inability to legally host health data
Regulatory penalties
Leak of highly sensitive data
Conformité au règlement européen eIDAS 2.0

eIDAS 2 

The eIDAS2 regulation governs digital identity and electronic signatures in Europe. With Voltn Sign, your mandates, leases, and sales agreements are signed within a legally recognized framework.

It guarantees

The legal validity of electronic signatures
A European framework for digital identity
The reliability of digital exchanges

Who is this for?

Associations for their partnership and grant agreements
Organizations signing employment and volunteer contracts
Foundations for their governance acts

Risk in case of non-compliance

Documents with no evidentiary value in the event of a dispute
Questionable signatures
A costly return to paper
Label Numérique Responsable niveau 1

The Responsible Digital label

The Responsible Digital label certifies Voltn's commitment to digital sustainability. This commitment is directly aligned with the values upheld by the non-profit sector.

It guarantees

A measured and audited commitment to more sustainable digital practices
Infrastructure optimized to limit its footprint
A continuous improvement process

Who is this for?

Environmental and transition-focused non-profits
Organizations incorporating CSR criteria into their procurement
Any organization mindful of the consistency between its mission and its tools

Risk of non-compliance

A missing digital link in the CSR report
An inconsistency between public interest missions and energy-intensive tools
A disadvantage for funding applications incorporating CSR criteria
1. Security of association data
  • Data encryption and antivirus protection
  • Ransomware and intrusion detection
2. Regulatory compliance
  • ISO 27001, ISO 9001, and HDS certifications
  • GDPR alignment and eIDAS-compliant signatures
3. Data sovereignty
  • Hosting in France
  • Protection against extraterritorial legislation
4. Access management and traceability
  •  Granular permissions by branch, department, or project
  • Complete activity history
5. Secure collaboration
  • Controlled sharing between employees, volunteers, and partners
  • Real-time document co-editing and approval

The pillars of Voltn

Voltn hosts and secures files for associations and NGOs in a trusted cloud, controlled from end to end: we develop the software and operate the infrastructure.

Solutions tailored to your needs

Voltn Share secures your document exchanges with external parties. Voltn Workspace centralizes storage and collaboration between your teams and branches.

External file sharing

Send files without size or format limits

Share activity reports, grant applications, photos, and videos of your projects via secure link. Your illustrated annual report is now as easy to send as a simple meeting summary.

Secure upload link

Your members, beneficiaries, and partners can upload documents to a dedicated space without needing to create an account. Every file is scanned for viruses and automatically sorted into the correct folder.

Password or SMS code protection

Add authentication to every sensitive share and set an expiration date. Files sent to a partner will automatically become inaccessible after your chosen date.

Full traceability of all exchanges

Every link is unique and timestamped. You know exactly who viewed or downloaded each document, providing professional assurance to your funders.

Custom portal branded for your organization

Your partners access a portal branded with your colors and logo. Build trust through the professional image you project and the tools you choose.
Discover Voltn Share

The enterprise file platform

Access management by branch, department, or mission

Assign precise permissions to every employee, volunteer, or partner with 7 levels of access. When a volunteer leaves the organization, you can revoke their access in a single click.

Real-time co-editing

Collaborate on activity reports, grant applications, and meeting minutes directly within Word, Excel, and PowerPoint. Keep one single, up-to-date version of every document.

Version history and trash bin to prevent accidental deletion

Every document retains its full version history, and deleted files can be recovered for as long as you choose. A simple mistake won't cost you any files.

Mobile app and VPN-free access

Access your files during home visits, outreach, or field missions, even offline. The platform is accessible anywhere, with no complex installation required.

Strong authentication (MFA, SSO)

Secure access with two-factor authentication and connect the platform to your directory. A security requirement that is frictionless for your teams.
Discover Voltn Workspace

Concrete use cases in the non-profit sector

Non-profit organization

General meeting minutes, member files, grant applications, event photos: association life generates documents that circulate between employees, volunteers, and the board of directors. They end up scattered across personal email accounts, USB drives, and free tools, lost in the shuffle of staff turnover.

Voltn centralizes the association's institutional memory: an organized space where access follows mandates and roles, ensuring documents remain even as volunteers come and go.

Current state
Documents scattered among staff, volunteers, and rotating board members
Solution
Centralized space with role-based permissions + one-click access revocation
Benefit
Preserving the association's institutional memory
+ GDPR compliance

Social and healthcare association

Whether for non-profit nursing homes, home care services, disability support, or child protection agencies, the social and healthcare sector manages user files that combine social situations with health data. This data is subject to HDS-certified hosting requirements, which mainstream tools do not meet. Voltn provides a complete framework: HDS-certified hosting, access restricted by department, traceability for every file access, and a platform accessible to field teams without the need for a VPN.

Supporting documents arrive by email, pile up in inboxes, and every uncontrolled transfer puts personal data at risk. Voltn structures the workflow: a dedicated upload link for each file, automatically categorized documents, and tracked, time-limited sharing, all the way to the electronic signature of the sales agreement.

Current state
Managing user files containing health data
Solution
HDS-certified hosting with granular permissions and full traceability
Benefit
HDS and GDPR compliance + protected user privacy

International NGO

Missions across multiple countries, field and head office teams, reports to international donors: NGOs coordinate sensitive documents across sometimes unstable environments. Mission reports, partnership contracts, and expense receipts must circulate quickly, remain confidential, and be retrievable years later. Voltn structures this coordination: a dedicated space for each mission or country, precise permissions for every stakeholder, and data hosted in France, beyond the reach of extraterritorial legislation.Supporting documents arrive by email, pile up in inboxes, and every uncontrolled transfer exposes personal data. Voltn structures the workflow: a dedicated upload link for each file, automatically categorized documents, and tracked, time-limited sharing, right up to the electronic signature of the agreement.

Current state
Document coordination between headquarters, field missions, and donors
Solution
Mission-specific spaces with granular permissions
Benefit
Mission confidentiality + easier accountability to lessors

Foundation & endowment fund

Funding applications, sponsorship agreements, board deliberations: a foundation processes and archives binding documents, shared with project leaders, sponsors, and governance bodies. Voltn organizes this cycle: an upload link to receive applications, partitioned spaces for processing, electronic signature of agreements with Voltn Sign, and tracked archiving of decisions.Supporting documents arrive by email, pile up in inboxes, and every uncontrolled transfer exposes personal data. Voltn structures the workflow: one upload link per file, automatically classified documents, and tracked, time-limited sharing, all the way to the electronic signature of the agreement.

Current state
Receipt of funding applications and document governance
Solution
Secure upload link + partitioned processing spaces + electronic signature
Benefit
Streamlined processing + documented and traceable governance

What about other sectors?

From healthcare to logistics, every industry has its own security, privacy, and compliance rules. Voltn adapts to them, not the other way around.
1

Education

We have carefully reviewed the requirements and are offering solutions that protect your data while making your life easier.
2

Marketing agencies

No need for a SWOT analysis—Voltn is the solution you need for secure collaboration and file sharing.
3

Legal

For sensitive data and file sharing between parties, Voltn makes a compelling case.

96% of our clients recommend us

Guillaume Gérard

IT Manager at AMISEP

“We were looking for a secure solution, hosted in France, that met GDPR requirements. Voltn stood out for its simplicity and its HDS certification. Since then we have had a reliable platform, accessible without a VPN, which has greatly simplified our document management.”

Use cases

Solutions for every sector

Logo du SamusocialLogo AMISEPLogo Campus AcademyLogo du Département de la Haute-GaronneLogo de la Métropole de LyonLogo Alcyon

FAQ

Where is the data hosted?

Exclusively in France, in data centres meeting Tier 3+ and Tier 4 standards. No transfer takes place outside the European Economic Area, beyond the reach of the Cloud Act.

Must a health and social care non-profit host its health data with an HDS-certified provider?

Yes. Health data collected as part of care or medico-social follow-up activities must be hosted with an HDS-certified provider, in accordance with Article L1111-8 of the French Public Health Code. Voltn is HDS certified across all six activities of the framework.

How do you share documents between staff, volunteers and local branches?

With shared spaces per branch, department or programme, and 7 levels of access rights. When a volunteer joins or leaves, their access is opened or closed in one click, without touching the documents.

How do you protect member, beneficiary and donor data?

By centralising it in an encrypted space with access rights set by department or programme. Every access is logged, and the data stays hosted in France, in line with the GDPR.

Which secure cloud should a non-profit choose?

A professional cloud, hosted in France and GDPR compliant. Voltn adds ISO 27001, ISO 9001 and HDS certifications, fine-grained access rights management and France-based support, in a platform that is straightforward for staff and volunteers alike.

You could keep all your documents on a floppy disk.
Vintage office chair with a pile of folders and a beige corded telephone, handset off the hook on red carpet.

But let's be honest, our cloud-based file storage and sharing solution is much easier.