Every European object storage providers (S3-compatible) tool reviewed
Hamburg, Germany
Founded 2021
EUR 7.99 per TB per month pay-as-you-go; reserved capacity from 25 TB through partners
Demo on request
Best for: Backup targets and AI datasets where the egress bill is the unknown
Impossible Cloud sells one product at one price: always-hot S3 storage at EUR 7.99 per TB per month, with egress and API calls free as long as usage stays within a fair-use policy. Because a restore reads at the same rate as a new upload, a backup repository on this service has no retrieval surprise. Reserved capacity from 25 TB is cheaper per TB but is listed through partners only.
The company is Impossible Cloud GmbH in Hamburg, founded in 2021, with German law governing the terms and disputes going to arbitration under the Hamburg International Arbitration Center rules, with a class-action waiver. The terms also say the company does not warrant that storing personal data complies with GDPR, so the compliance work stays in your processing agreement. According to the vendor, durability is 99.999999999 percent via erasure coding.
What Impossible Cloud does well
- One price per TB, with no request or egress charge
- Object Lock and versioning make backups immutable
- Hamburg entity with a commercial register number
- Free 30-day trial, no card needed
- Veeam, Acronis and NAKIVO listed as integrations
Where Impossible Cloud falls short
- A single hot tier, so archives cost the same as active data
- Free egress holds only within fair use
- Arbitration and a class-action waiver replace a court
- Founded in 2021, so a shorter record
Standout feature. Impossible Cloud is the only provider on this list that sells a single price per terabyte for every use, with API calls free.
Solna, Sweden
S3-archive EUR 31.15 and S3-storage EUR 44.50 per TB per 30 days
Demo on request
Best for: Nordic and public-sector workloads that want a readable price list
Safespring runs S3 storage on Ceph and splits it into two products: S3-storage for applications that use the S3 protocol actively, at EUR 44.50 per TB per 30 days, and S3-archive for large objects that are written once and read now and then, at EUR 31.15. Its price page says no traffic charges apply in either direction and describes traffic fees as a common lock-in mechanism.
The contracting company is Safespring AB of Solna, organisation number 559075-0245, operating in Sweden and Norway and publishing ISO 27001 information. Object locking and a guide on immutable storage are available, and the storage page names Veeam Backup, Nextcloud and Cyberduck. The pages give no durability or availability figures, no data center locations and no founding year, so those need to be requested.
What Safespring does well
- Active and archive tiers, each with a euro price
- Traffic into and out of the service is not charged
- Object locking supports immutable backups
- Swedish company with a registered organisation number
- Setup guides for s3fs, MinIO Client and the AWS CLI
Where Safespring falls short
- Priced several times above the flat-rate providers
- Durability and availability not stated on the storage page
- Only Nordic operations
- No free trial on the pages read
Standout feature. Safespring prints two clear euro prices per TB for 30 days and states that it does not bill traffic.
Bologna, Italy
DS3 Cloud via partner quote; DS3 Composer free to 3 TB, EUR 4.99 per TB per month for 3 to 10 TB
Demo on request
Best for: Organisations that want multi-site resilience without paying for a second region
Cubbit offers the same S3 technology in two forms. DS3 Cloud is hosted in certified partner data centers in the EU or the UK, and DS3 Composer is software you install on your own Linux nodes, on bare metal or in a public cloud, with a managed option. The company says it encrypts, fragments and replicates data across locations of your choice, which makes multi-site copies part of the base service.
The pricing page describes one flat rate per TB with no charge for egress, deletion, bucket replication or API calls. For DS3 Cloud that rate comes through a partner quote, and the only published figures are for Composer: free to 3 TB and EUR 4.99 per TB per month for 3 to 10 TB. Cubbit S.r.l. is registered in Bologna. The vendor claims savings up to 80 percent against hyperscalers without publishing the calculation.
What Cubbit does well
- One technology, hosted or installed on your own servers
- Data is spread over several locations by default
- Egress, deletion and API calls not charged, per the vendor
- Registered in Bologna as Cubbit S.r.l.
- Demo environment of 1 TB for 30 days
Where Cubbit falls short
- DS3 Cloud has no public rate
- Hosted data sits in partner data centers, not Cubbit's own
- Composer price stops at 10 TB
- The 80 percent saving is a claim without a calculation
Standout feature. Cubbit is the one provider here where the same S3 service can run in its partners' data centers or in your own server room.
Gunzenhausen, Germany
Founded 1997
EUR 6.49 per month base fee including 1 TB of storage and 1 TB of egress
Demo on request
Best for: Teams that want a plain bucket with a small, predictable monthly minimum
Hetzner starts object storage at a EUR 6.49 monthly base fee that already covers 1 TB of stored data and 1 TB of egress, with usage beyond that billed on top. The locations are Falkenstein, Nuremberg and Helsinki, and object locking is available for immutable backups. For a first bucket or a modest backup job, the minimum is easy to budget.
Hetzner Online GmbH is based in Gunzenhausen and has traded since 1997, so the track record is the longest of the German names on this page. One billing rule deserves attention: objects below 64 KB are billed as 64 KB, which inflates the size of a bucket full of tiny files. The rest of the Hetzner catalogue (servers, volumes) sits beside the bucket but is not required to use it.
What Hetzner does well
- Base fee includes 1 TB of storage and 1 TB of egress
- Object locking is listed
- Locations in Germany and Finland
- Operating since 1997 as a German company
- S3-compatible tools such as rclone and the AWS CLI are named
Where Hetzner falls short
- Objects under 64 KB are billed as 64 KB
- Only three locations, all in northern Europe
- No archive or tape class listed
- Fewer services around the bucket than Scaleway or OVHcloud
Standout feature. Hetzner combines the lowest published entry fee on this list with 1 TB of egress inside it.
Paris, France
Founded 1999
Priced per GB and hour; 75 GB of egress a month included, then EUR 0.01 per GB
Demo on request
Best for: Teams that already work with storage classes and want the same layering from a French provider
Scaleway offers Multi-AZ and One Zone object storage and a Glacier cold class, priced per GB and per hour, with no request fees stated. This structure is the nearest to the way Amazon layers classes, so a migrating team keeps the same vocabulary. The page includes 75 GB of egress a month and then charges EUR 0.01 per GB.
Scaleway is a subsidiary of the Iliad Group in Paris, trading since 1999, and its tool page also lists virtual machines, Kubernetes and GPU instances, so a bucket can sit next to compute in the same account. The contract governing law could not be confirmed, since the terms are in a PDF, and only the Paris price table was read, so regions beyond Paris should be checked.
What Scaleway does well
- Multi-AZ, One Zone and Glacier classes
- No request fees
- Hourly billing granularity
- Part of the Iliad Group, based in Paris
- 75 GB of egress included every month
Where Scaleway falls short
- Egress is charged at EUR 0.01 per GB beyond 75 GB
- Governing law of the contract not confirmed
- Only the Paris price table was read
- Class choice adds planning work
Standout feature. Scaleway is the provider whose class structure, from Multi-AZ to Glacier, most closely mirrors Amazon's.
Lausanne, Switzerland
Founded 2011
Object storage prices not visible on the pages read (rendered in the browser)
Demo on request
Best for: Buyers who want Swiss law and courts plus a choice of European zones
Exoscale sells S3-compatible storage with versioning, object lock and bucket replication, under Swiss law and with Swiss courts. The company is based in Lausanne, was founded in 2011 and belongs to A1 Digital; its terms mention the A1 Telekom Austria Group as the parent. Its tool page lists data centers in Switzerland, Germany, Austria and Bulgaria.
The object storage prices on the Exoscale pages are drawn in the browser and could not be read, so no figure is quoted here. The company registration number was not read either. Because Switzerland is outside the EEA, the legal basis for transfers is the EU adequacy decision, which suits most buyers but not a policy that requires EEA-only providers.
What Exoscale does well
- Swiss law and courts in the contract
- Versioning, object lock and bucket replication
- Zones in Austria and Bulgaria as well as Germany and Switzerland
- Part of A1 Digital
- Infrastructure-as-code tooling around the platform
Where Exoscale falls short
- Outside the EEA, relying on an adequacy decision
- Object storage prices could not be read
- Smaller catalogue than the hyperscalers
- Less well known, so fewer tutorials
Standout feature. Exoscale is the only provider on this list whose contract runs under Swiss law and Swiss courts.
Roubaix, France
Founded 1999
No euro price on the server-rendered page; egress and API calls not charged
Demo on request
Best for: Backup-heavy buyers who want a tape-based archive class and Veeam support
OVHcloud sells four storage classes, from hot HDD storage down to a Cold Archive held on tape, and states that egress and API calls are not charged. The page names Veeam and HYCU as supported backup software. For data that is kept for years and almost never read, the tape class is the lowest-tier option on this list.
Colder classes come with minimum storage periods of 30, 90 and 180 days, so deleting early does not stop the charge. OVHcloud SAS is headquartered in Roubaix, has traded since 1999 and runs its own data centers. No euro price appeared on the server-rendered page and the governing law was not checked, so request both before committing.
What OVHcloud does well
- Four classes including tape-based Cold Archive
- Egress and API calls not charged
- Veeam and HYCU named as backup partners
- Own data centers, founded in France in 1999
- SecNumCloud-qualified group, per the company page
Where OVHcloud falls short
- Minimum storage periods of 30, 90 and 180 days
- No euro price on the page read
- Governing law not checked
- Pricing by class takes effort to estimate
Standout feature. OVHcloud is the only provider here that keeps an archive class on tape.
Bad Friedrichshall, Germany
Billed hourly; egress and request fees not stated on the product page
Demo on request
Best for: German-speaking buyers who want hourly billing, an archiving class and locations in Germany and Austria
STACKIT is the cloud of Schwarz Digits, and its object storage is S3-compatible, billed by the hour and available in Germany and Austria with an archiving class. Hourly billing suits buckets that exist for a project and are then deleted, since a week of storage is charged as a week.
The legal entity is Schwarz Digits Cloud GmbH & Co. KG in Bad Friedrichshall. The product page does not state egress or request fees, so a total cost cannot be modelled from it, and the terms URL returned an error when read, which left the governing law unconfirmed. Ask for both in writing; until you have them, STACKIT is a candidate rather than a verified choice.
What STACKIT does well
- Billing by the hour
- Data in Germany and Austria
- An archiving class is listed
- Part of a large German retail group's cloud arm
Where STACKIT falls short
- Egress and request fees not stated on the product page
- Governing law not read
- Only two countries
Standout feature. STACKIT is the provider here that bills object storage strictly per hour.
Puteaux, France
EUR 0.018 per GiB per month excluding VAT; traffic included
Demo on request
Best for: French public sector and health organisations that need a qualified endpoint
Cloud Temple built its object storage on Dell Elastic Cloud Storage in region FR1, with replication over three availability zones and 12+4 erasure coding. The price is EUR 0.018 per GiB per month excluding VAT, with public, outgoing and internal traffic included. The page also lists 99.99 percent availability and a 5 TB maximum object size, according to the vendor.
The reason to pick Cloud Temple is the qualification list: SecNumCloud, HDS for health data, ISO 27001 and C5. The company is Cloud Temple SAS of Puteaux (company number 825 400 336). Compatibility with the S3 protocol is stated at 97 percent, Object Lock is announced for the second half of 2026, and only one region is priced, so immutable backups cannot be assumed today.
What Cloud Temple does well
- SecNumCloud, HDS and ISO 27001 on the product page
- Traffic included, so no egress line
- Replication over three zones with 12+4 erasure coding
- A listed euro price per GiB
- French company with a published registration number
Where Cloud Temple falls short
- Compatibility with the S3 API is 97 percent
- Object Lock is not generally available yet
- FR1 is the only priced region
- Costs more than the flat-rate challengers
Standout feature. Cloud Temple is the only provider on the list that pairs a French SecNumCloud qualification with a public euro price per GiB.
Ponte San Pietro (BG), Italy
From EUR 0.011 per GB per month plus VAT; pay-per-use from EUR 0.00028 per hour per 10 GB; packages from EUR 60 per month plus VAT
Demo on request
Best for: Italian businesses and public bodies that want a domestic provider and a package price
Aruba Cloud sells object storage in 10 GB blocks, billed from EUR 0.00028 per hour, or in monthly packages starting at EUR 60 plus VAT for 4 TB of storage and 40 TB of outgoing traffic. Unlike most providers here it charges for traffic out: EUR 0.50 plus VAT per 10 GB on pay-per-use. The vendor describes the stack as Ceph on NVMe disks with several copies on separate devices.
Aruba S.p.A. is based in Ponte San Pietro in the province of Bergamo, and says the service is qualified by the Italian National Cybersecurity Agency. Seven data centers can be chosen, but the cities are not listed. The headline "from EUR 0.011 per GB" does not match the pay-per-use arithmetic, so work out which route your volume uses with the calculator.
What Aruba Cloud does well
- Pay-per-use and fixed packages both on offer
- Qualified by the Italian ACN for public administration
- Seven data centers to choose from
- Registered Italian company with capital and REA number
- Technical support around the clock
Where Aruba Cloud falls short
- Outgoing traffic is billed
- No durability or availability figures
- Data center cities not named
- The lowest per-GB figure and the hourly rate do not match
Standout feature. Aruba Cloud is the only provider here that sells a fixed monthly package with a stated outgoing-traffic allowance.
Montabaur, Germany
Founded 1988
Usage-billed; EUR 0.007 per GB per 30 days on the German page; API calls free
Demo on request
Best for: Customers of IONOS hosting who want Object Lock and no per-request charge
IONOS Cloud bills object storage by usage, states that API calls are free and lists Object Lock for immutable data. Its pages name data centers in Germany and Spain, and the German page shows EUR 0.007 per GB per 30 days, a figure read on that page only.
The contracting entity is IONOS Cloud GmbH of Montabaur (HRB 31110), part of a group that has operated since 1988; a UK entity serves the British site. US-facing pages show IONOS Cloud USA Inc. as the seller, so open the account on the German or UK site and choose a European region when creating the bucket. The governing law was not checked.
What IONOS Cloud does well
- API calls are free
- Object Lock is listed
- Locations in Germany and Spain
- German GmbH with a commercial register number
- Fits next to IONOS hosting, domains and email
Where IONOS Cloud falls short
- A different legal entity appears on US-facing pages
- The price figure was read on the German page only
- Governing law not checked
- Usage billing makes a forecast harder
Standout feature. IONOS Cloud is the provider here whose seller changes with the site you buy from, so the account region matters.
Frankfurt am Main, Germany
Price calculator and service description PDF (no price on the product page); EUR 250 starting credit until 31 December 2026
Demo on request
Best for: German enterprises already working under Deutsche Telekom contracts
T Cloud Public is the name, since January 2026, of the platform formerly called Open Telekom Cloud, and its Object Storage Service is reachable over REST and the S3 protocol. It has standard, warm and cold classes, each spread over three availability zones, and lists lifecycle rules, versioning, bucket policies, IAM and logging.
T-Systems International GmbH in Frankfurt (HRB 55933) runs the service. The product page shows no storage price, only a link to a calculator and a service description PDF, plus an EUR 250 starting credit for bookings until 31 December 2026. Cold retrieval takes minutes with expedited access and 3 to 12 hours otherwise, and the level of S3 compatibility is not stated.
What T Cloud Public does well
- Standard, warm and cold classes with lifecycle rules
- Every class stored in three availability zones
- IAM and bucket policies listed
- Frankfurt entity with a commercial register number
- Cross-region replication appears in the 2026 release notes
Where T Cloud Public falls short
- No storage price on the product page
- Cold retrieval can take up to 12 hours
- Documentation still uses the old name in places
- Built around enterprise cloud accounts
Standout feature. T Cloud Public is the only provider on the list that places even its cold class across three availability zones.
Munich, Germany
Founded 2003
Flat rate per storage tier, unlimited transfer; existing Contabo customers only
Demo on request
Best for: Existing Contabo server customers who want inexpensive bucket space next to their machines
Contabo sells object storage as a flat rate per tier with unlimited transfer, which removes the egress line from the bill entirely. The product page describes it as compatible with the S3 API so that existing applications can connect, but it is offered only to customers who already have a Contabo account.
Contabo GmbH is based in Munich and has operated since 2003, and its terms fall under German law. The company registration number was not read for this review, and the location of the object storage was not stated on the pages read. Treat the product as an add-on to a server relationship, not as a standalone alternative to Amazon.
What Contabo does well
- Flat rate per storage tier
- Transfer is unlimited
- German GmbH operating since 2003
- Sold next to the servers many customers already rent
Where Contabo falls short
- Only for existing Contabo customers
- Storage location not stated on the pages read
- Registration number not read
- Few details on features beyond the S3 API on the page read
Standout feature. Contabo is the only provider on this list where a bucket is available only through an existing server account.
