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.

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
Distributed teams and rotating volunteers
Health data and the medico-social sector
Funder trust and transparency
Limited resources, growing demands
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
Who is affected?
Risks of non-compliance
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
Who is affected?
Risk in case of non-compliance
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
Who is affected?
Risk of non-compliance
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
Who is this for?
Risk in case of non-compliance

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
Who is this for?
Risk of non-compliance
- Data encryption and antivirus protection
- Ransomware and intrusion detection
- ISO 27001, ISO 9001, and HDS certifications
- GDPR alignment and eIDAS-compliant signatures
- Hosting in France
- Protection against extraterritorial legislation
- Granular permissions by branch, department, or project
- Complete activity history
- Controlled sharing between employees, volunteers, and partners
- Real-time document co-editing and approval
The pillars of Voltn
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
Secure upload link
Password or SMS code protection
Full traceability of all exchanges
Custom portal branded for your organization





The enterprise file platform
Access management by branch, department, or mission
Real-time co-editing
Version history and trash bin to prevent accidental deletion
Mobile app and VPN-free access
Strong authentication (MFA, SSO)





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.
+ 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.
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.
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.
What about other sectors?
Education
Marketing agencies
Legal
96% of our clients recommend us
Solutions for every sector
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.

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

