# Free S3-compatible storage, no card

> Usable storage offers with a stated free allowance, in the storage topic or in egress, with an S3 interface whose identity requirement was read and does not include a card. A paid plan with no free allowance is not listed. Sorted by USD per TB-month where a price parsed.

Ranked by `usd_per_tb_month`, ascending; the rows with no parsed number follow, listed and not dropped, and the self-hosted rows come last. The same list: `https://fshy.ajam.dev/api/v1/need/s3-storage-no-card`, the MCP tool `need`, or this SQL:

```sql
SELECT rid, usd_per_tb_month FROM record WHERE (topic='storage' OR (topic='egress' AND interfaces LIKE '%s3%')) AND grp='usable' AND (interfaces LIKE '%s3%') AND needs_card=0 AND identity_basis='stated' AND duplicate_of IS NULL AND rid IN (SELECT rid FROM claim WHERE kind='has-free-tier' AND num=1)
ORDER BY self_hosted, usd_per_tb_month ASC NULLS LAST
```

## Ranked (4)

1. USD 2/TB-month | [Sia Storage App (sia.storage)](https://fshy.ajam.dev/p/sia.md) [`storage/sia-storage-app`](https://fshy.ajam.dev/api/v1/record/storage/sia-storage-app): qualifies-with-caveat | free tier | email | no card | no phone | documented | stale on 2026-11-21 | USD 2/TB-month. Free plan 50 GB, 3 apps, 500 Mbps.
2. USD 6.95/TB-month | [Backblaze B2](https://fshy.ajam.dev/p/backblaze.md) [`storage/backblaze-b2`](https://fshy.ajam.dev/api/v1/record/storage/backblaze-b2): qualifies-with-caveat | free tier | email | no card | no phone | documented | stale on 2026-12-04 | USD 6.95/TB-month. First 10GB storage is always free; storage above it is billed per byte-hour at USD 6.95/TB/30-days
3. USD 12/TB-month | [Hugging Face Storage Buckets via S3 gateway (s3.hf.co) — as an annex/DVC backend](https://fshy.ajam.dev/p/huggingface.md) [`storage/hugging-face-storage-buckets-via-s3-gateway-as-an-annex`](https://fshy.ajam.dev/api/v1/record/storage/hugging-face-storage-buckets-via-s3-gateway-as-an-annex): qualifies-with-caveat | free tier | email | no card | phone? | documented | stale on 2026-11-21 | USD 12/TB-month. Free user or organisation: public storage 'Best-effort' with no published figure, private storage 100 GB; the storage plans and policies apply to every...
4. USD 18.63/TB-month | [Tigris](https://fshy.ajam.dev/p/tigrisdata.md) [`storage/tigris`](https://fshy.ajam.dev/api/v1/record/storage/tigris): qualifies-with-caveat | free tier | email | no card | no phone | documented | stale on 2026-11-21 | USD 18.63/TB-month. 5 GB of Standard-tier storage, 10,000 Class A requests (PUT, COPY, POST, LIST) and 100,000 Class B requests (GET, SELECT and all other) a month on every...

## No parsed number (11)

- [Internet Archive (IAS3 / petabox item upload)](https://fshy.ajam.dev/p/internet-archive.md) [`storage/internet-archive`](https://fshy.ajam.dev/api/v1/record/storage/internet-archive): qualifies | free tier | email | no card | no phone | documented | stale on 2026-11-21. 1 TB hard limit per item page, with a recommendation of 1,000 files or 500 GB per item, and a single file should not exceed about 500 GB.
- [Harvard Dataverse Repository - per-collection quota](https://fshy.ajam.dev/p/dataverse-harvard-edu.md) [`storage/harvard-dataverse-repository-per-collection-quota`](https://fshy.ajam.dev/api/v1/record/storage/harvard-dataverse-repository-per-collection-quota): qualifies | free tier | email | no card | no phone | reported | stale on 2026-11-05. 1 TB per Dataverse Collection allocation (2.5 TB for Harvard affiliates).
- [Zenodo (CERN)](https://fshy.ajam.dev/p/zenodo.md) [`storage/zenodo`](https://fshy.ajam.dev/api/v1/record/storage/zenodo): qualifies-with-caveat | free tier | email | no card | no phone | documented | stale on 2026-12-02. Each record comes with a default quota of 50 GB and an unlimited number of records may be uploaded under 50 GB; a further 150 GB additional allowance is...
- [Nebula Block — Standard object storage tier (storage free, egress billed)](https://fshy.ajam.dev/p/nebulablock.md) [`storage/nebula-block-standard-object-storage-tier`](https://fshy.ajam.dev/api/v1/record/storage/nebula-block-standard-object-storage-tier): qualifies-with-caveat | free tier | email | no card | no phone | documented | stale on 2026-11-21. No storage quota on the Standard tier — it is priced at $0/GB/month by design: 'Standard — Stored data: Free — Durable, high-capacity storage.
- [Baidu AI Studio 星河社区 (aistudio.baidu.com) — dataset + notebook storage](https://fshy.ajam.dev/p/baidu.md) [`storage/baidu-ai-studio-dataset-notebook-storage`](https://fshy.ajam.dev/api/v1/record/storage/baidu-ai-studio-dataset-notebook-storage): qualifies-with-caveat | free tier | country-phone | no card | reported | stale on 2026-11-05. Two separate pools, which is the interesting part: (1) Notebook persistent workspace — verbatim 'Notebook每个用户提供 100G 的云端持久化存储空间作为个人工作区，访问路径为...
- [Digital Research Alliance of Canada — 1 TB default object storage per project, up to 40 TB project / 100 TB nearline via Rapid Access Service](https://fshy.ajam.dev/p/alliancecan.md) [`storage/digital-research-alliance-of-canada-1-tb-default-object`](https://fshy.ajam.dev/api/v1/record/storage/digital-research-alliance-of-canada-1-tb-default-object): qualifies-with-caveat | free tier | institution | no card | no phone | reported | stale on 2026-11-05. 'All Arbutus projects are allocated a default 1TB of object storage.
- [Mozilla Data Collective (MDC)](https://fshy.ajam.dev/p/mozilladatacollective.md) [`storage/mozilla-data-collective`](https://fshy.ajam.dev/api/v1/record/storage/mozilla-data-collective): qualifies-with-caveat | free tier | email | no card | no phone | reported | stale on 2026-11-05. 150 GB per uploaded file — raised from a lower value in the Python SDK on 2026-03-24 ('Increase upload file size limit to 150GB').
- [Science Data Bank (ScienceDB, Chinese Academy of Sciences / CNIC)](https://fshy.ajam.dev/p/scidb.md) [`storage/science-data-bank`](https://fshy.ajam.dev/api/v1/record/storage/science-data-bank): qualifies-with-caveat | free tier | email | no card | no phone | reported | stale on 2026-11-05. 1 TB per dataset and 2,000 files per dataset, with no per-user or per-account cap; the 1 TB/2,000-file line is a soft gate (contact [address removed] for...
- [Source Cooperative (source.coop / data.source.coop)](https://fshy.ajam.dev/p/source.md) [`storage/source-cooperative-byte-level-re-probe`](https://fshy.ajam.dev/api/v1/record/storage/source-cooperative-byte-level-re-probe): qualifies-with-caveat | free tier | email | no card | no phone | reported | stale on 2026-11-05. No published byte quota; the org states it 'hosts over 5 petabytes of data' across 330+ products from 130+ organisations and serves ~700 TB/month, and...
- [Source Cooperative - uncapped public publishing, beta-gated](https://fshy.ajam.dev/p/source.md) [`storage/source-cooperative-uncapped-public-publishing-beta-gated`](https://fshy.ajam.dev/api/v1/record/storage/source-cooperative-uncapped-public-publishing-beta-gated): qualifies-with-caveat | free tier | email | no card | no phone | reported | stale on 2026-11-05. No published byte cap: 'allowing trusted organizations and individuals to publish data of any kind at any scale'.
- [OpenDataLab (opendatalab.com / opendatalab.org.cn)](https://fshy.ajam.dev/p/opendatalab.md) [`storage/opendatalab`](https://fshy.ajam.dev/api/v1/record/storage/opendatalab): qualifies-with-caveat | free tier | email | no card | phone | inferred | stale on 2026-11-21. Not published. What is documented is capability rather than quota: the dataset center accepts file, folder, or archive uploads and auto-extracts archives...

## Card or phone requirement not stated (29)

The data does not state whether a payment card is needed, or the identity is a placeholder that no source states. These records are listed, not dropped, and none of them is counted as no.

- [AWS Open Data Sponsorship Program](https://fshy.ajam.dev/p/amazon.md) [`storage/aws-open-data-sponsorship-program`](https://fshy.ajam.dev/api/v1/record/storage/aws-open-data-sponsorship-program): qualifies | free tier | card? | card? | phone? | reported | stale on 2026-11-05. No published byte cap - 'covers the cost of Amazon S3 storage and data transfer for high-value cloud-optimized public datasets'.
- [Modal (Storage)](https://fshy.ajam.dev/p/modal.md) [`storage/modal`](https://fshy.ajam.dev/api/v1/record/storage/modal): qualifies | free tier | card? | card? | phone? | reported | stale on 2026-11-05. Volumes: 'Volumes include up to 1 TiB free' on the Starter plan, then $0.09/GiB/mo (per PricingSaaS capture of the Jun 2026 pricing change).
- [Modal Volumes](https://fshy.ajam.dev/p/modal.md) [`storage/modal-volumes`](https://fshy.ajam.dev/api/v1/record/storage/modal-volumes): qualifies | free tier | card? | card? | phone? | reported | stale on 2026-11-05. 1 TiB of Volume storage free per workspace on the Starter plan ('Volumes include up to 1 TiB free'; 'Volumes $0.09 / GiB / mo *includes 1 TiB / mo free')...
- [NCBI SRA — with anonymous read via AWS Open Data](https://fshy.ajam.dev/p/ncbi-nlm-nih-gov.md) [`storage/ncbi-sra-with-anonymous-read-via-aws-open-data`](https://fshy.ajam.dev/api/v1/record/storage/ncbi-sra-with-anonymous-read-via-aws-open-data): qualifies | free tier | anonymous? | card? | phone? | reported | stale on 2026-11-05. No per-account quota published.
- [Open Storage Network (OSN) via NSF ACCESS — 1 to 50 TB of S3 per allocation, 10 TB minimum](https://fshy.ajam.dev/p/openstoragenetwork.md) [`storage/open-storage-network-via-nsf-access-1-to-50-tb-of-s3-per`](https://fshy.ajam.dev/api/v1/record/storage/open-storage-network-via-nsf-access-1-to-50-tb-of-s3-per): qualifies | free tier | institution? | card? | phone? | reported | stale on 2026-11-05. 'Allocations of a minimum 10 terabytes and max of 50 terabytes supporting up to 1.6 million files can be requested through the ACCESS CI allocation...
- [OpenNeuro](https://fshy.ajam.dev/p/openneuro.md) [`storage/openneuro`](https://fshy.ajam.dev/api/v1/record/storage/openneuro): qualifies | free tier | institution? | card? | phone? | reported | stale on 2026-11-05. Free, no published per-dataset or per-account cap. 'Is this service free to use? Yes!' A 6.4 TB dataset has been deposited (staged incrementally).
- [Harvard Dataverse](https://fshy.ajam.dev/p/dataverse-harvard-edu.md) [`storage/harvard-dataverse`](https://fshy.ajam.dev/api/v1/record/storage/harvard-dataverse): qualifies-with-caveat | free tier | institution? | card? | phone? | documented | stale on 2026-11-21. 2.5 GB per file; 1 TB per Dataverse Collection for non-Harvard researchers (2.5 TB for Harvard affiliates).
- [AWS Activate (Founders / Portfolio)](https://fshy.ajam.dev/p/amazon.md) [`storage/aws-activate`](https://fshy.ajam.dev/api/v1/record/storage/aws-activate): qualifies-with-caveat | free tier | institution? | card? | phone? | reported | stale on 2026-11-05. Founders tier: '$1,000 in AWS Activate Credits ... Select startups may qualify for up to $5,000 over time'. Portfolio tier: 'up to $200,000 in AWS Activate...
- [Azure for Students (and Azure for Students Starter)](https://fshy.ajam.dev/p/microsoft.md) [`storage/azure-for-students`](https://fshy.ajam.dev/api/v1/record/storage/azure-for-students): qualifies-with-caveat | free tier | card? | card? | phone? | reported | stale on 2026-11-05. $100 credit per 12 months plus free monthly amounts of 20+ services; no credit card required.
- [Cloudflare for Startups — nonprofit / civil-society track](https://fshy.ajam.dev/p/cloudflare.md) [`storage/cloudflare-for-startups-nonprofit-civil-society-track`](https://fshy.ajam.dev/api/v1/record/storage/cloudflare-for-startups-nonprofit-civil-society-track): qualifies-with-caveat | free tier | institution? | card? | phone? | reported | stale on 2026-11-05. Up to $350,000 in credits for a year on the current program page (tiered: Tier 3 $10k upward).
- [DagsHub (DagsHub Storage + DVC remote)](https://fshy.ajam.dev/p/dagshub.md) [`storage/dagshub`](https://fshy.ajam.dev/api/v1/record/storage/dagshub): qualifies-with-caveat | free tier | email? | card? | phone? | reported | stale on 2026-11-05. 20 GB of DagsHub Storage on the free Individual plan (the commonly cited '10 GB' is stale — the live pricing page says 20 GB), with unlimited public...
- [GitHub Gist](https://fshy.ajam.dev/p/github.md) [`storage/github-gist`](https://fshy.ajam.dev/api/v1/record/storage/github-gist): qualifies-with-caveat | free tier | institution? | card? | phone? | reported | stale on 2026-11-05. Unlimited gists per account; each gist is a full Git repo.
- [Google for Startups Cloud Program (Start / Scale tiers)](https://fshy.ajam.dev/p/google.md) [`storage/google-for-startups-cloud-program`](https://fshy.ajam.dev/api/v1/record/storage/google-for-startups-cloud-program): qualifies-with-caveat | free tier | institution? | card? | phone? | reported | stale on 2026-11-05. Scale and Scale AI tiers: '$200K - $350k in credits' for startups with verifiable Pre-Seed to Series A funding.
- [IAS3 old-version retention (x-archive-keep-old-version)](https://fshy.ajam.dev/p/ias3-old-version-retention.md) [`storage/ias3-old-version-retention`](https://fshy.ajam.dev/api/v1/record/storage/ias3-old-version-retention): qualifies-with-caveat | free tier | institution? | card? | phone? | reported | stale on 2026-11-05. No quota of its own — it multiplies the 1TB item limit by however many versions you PUT.
- [ICPSR Consortium Archive (curated deposit path)](https://fshy.ajam.dev/p/icpsr-umich-edu.md) [`storage/icpsr-consortium-archive`](https://fshy.ajam.dev/api/v1/record/storage/icpsr-consortium-archive): qualifies-with-caveat | free tier | institution? | card? | phone? | reported | stale on 2026-11-05. No published byte cap on the curated path; ICPSR states 'Anyone can deposit data into ICPSR's Consortium Archive at no cost' and covers curation from...
- [INCITE (ALCF + OLCF, US DOE)](https://fshy.ajam.dev/p/doeleadershipcomputing.md) [`storage/incite`](https://fshy.ajam.dev/api/v1/record/storage/incite): qualifies-with-caveat | free tier | institution? | card? | phone? | reported | stale on 2026-11-05. 100 trillion bytes (~100 TB) of data storage awarded across the programme each year; per-project archival quota at OLCF is 200 TB (shared across...
- [MEGA](https://fshy.ajam.dev/p/mega.md) [`storage/mega`](https://fshy.ajam.dev/api/v1/record/storage/mega): qualifies-with-caveat | free tier | email? | card? | phone? | reported | stale on 2026-11-05. 20 GB free at signup, plus stacking achievements of 5 GB each (desktop app, mobile app, per invite, VPN trial, Pass trial) valid 365 days
- [Microsoft Azure grant for nonprofits ($2,000/yr, renews)](https://fshy.ajam.dev/p/microsoft.md) [`storage/microsoft-azure-grant-for-nonprofits`](https://fshy.ajam.dev/api/v1/record/storage/microsoft-azure-grant-for-nonprofits): qualifies-with-caveat | free tier | card? | card? | phone? | reported | stale on 2026-11-05. $2,000 (USD) in donated Azure services credits per year, renewable.
- [NAISS Arrhenius Disk / SENS Storage (Sweden) — 25 PB and 10 PB project storage, applied in GiB](https://fshy.ajam.dev/p/naiss.md) [`storage/naiss-arrhenius-disk-sens-storage-25-pb-and-10-pb-projec`](https://fshy.ajam.dev/api/v1/record/storage/naiss-arrhenius-disk-sens-storage-25-pb-and-10-pb-projec): qualifies-with-caveat | free tier | institution? | card? | phone? | reported | stale on 2026-11-05. Project storage is applied for in GiB through SUPR, with generous upper limits: Arrhenius Disk shows 'Upper Limit 50,000', 'Default Storage 250', 'Available...
- [National Research Platform (NRP / Nautilus, US) — free Ceph S3 to any namespace holder, multi-site](https://fshy.ajam.dev/p/nrp.md) [`storage/national-research-platform-free-ceph-s3-to-any-namespace`](https://fshy.ajam.dev/api/v1/record/storage/national-research-platform-free-ceph-s3-to-any-namespace): qualifies-with-caveat | free tier | institution? | card? | phone? | reported | stale on 2026-11-05. No published byte quota.
- [NSF ACCESS / Jetstream2 object store (OpenStack Swift, S3-compatible) — 1 TB default storage per allocation](https://fshy.ajam.dev/p/jetstream-cloud.md) [`storage/nsf-access-jetstream2-object-store-1-tb-default-storage`](https://fshy.ajam.dev/api/v1/record/storage/nsf-access-jetstream2-object-store-1-tb-default-storage): qualifies-with-caveat | free tier | institution? | card? | phone? | reported | stale on 2026-11-05. 'By default, all allocations receive 1 TB (1000 GB) of Jetstream2 Storage quota.' Additional storage is bought with ACCESS credits at '1 ACCESS credit == 1...
- [openICPSR (ICPSR, University of Michigan) — self-publishing repository](https://fshy.ajam.dev/p/openicpsr.md) [`storage/openicpsr-self-publishing-repository`](https://fshy.ajam.dev/api/v1/record/storage/openicpsr-self-publishing-repository): qualifies-with-caveat | free tier | anonymous? | card? | phone? | reported | stale on 2026-11-05. 30 GB per file with a 30 GB total per deposit and 1,000 files/folders per deposit; explicitly 'no cost to you'.
- [Oracle for Research (Project Award / Cloud Starter)](https://fshy.ajam.dev/p/oracle.md) [`storage/oracle-for-research`](https://fshy.ajam.dev/api/v1/record/storage/oracle-for-research): qualifies-with-caveat | free tier | institution? | card? | phone? | reported | stale on 2026-11-05. Credit-based, amount 'will vary depending on the proposal and usage requirements'.
- [Project Alexandria - Cloudflare's recurring OSS credit programme](https://fshy.ajam.dev/p/cloudflare.md) [`storage/project-alexandria-cloudflare-s-recurring-oss-credit-pro`](https://fshy.ajam.dev/api/v1/record/storage/project-alexandria-cloudflare-s-recurring-oss-credit-pro): qualifies-with-caveat | free tier | card? | card? | phone? | reported | stale on 2026-11-05. Recurring annual credits, amount set per project.
- [Public Datasets hosting programme (Google Cloud)](https://fshy.ajam.dev/p/google.md) [`storage/public-datasets-hosting-programme`](https://fshy.ajam.dev/api/v1/record/storage/public-datasets-hosting-programme): qualifies-with-caveat | free tier | card? | card? | phone? | reported | stale on 2026-11-05. No published quota - Google 'pays for the hosting of these datasets'. Existing hosted sets (Sentinel-2, Landsat, ARCO-ERA5, NEXRAD) run to petabytes.
- [SURF Research Drive (Netherlands) — up to 5 TB free via NWO-funded Small Compute applications](https://fshy.ajam.dev/p/surf.md) [`storage/surf-research-drive-up-to-5-tb-free-via-nwo-funded-small`](https://fshy.ajam.dev/api/v1/record/storage/surf-research-drive-up-to-5-tb-free-via-nwo-funded-small): qualifies-with-caveat | free tier | institution? | card? | phone? | reported | stale on 2026-11-05. Community Edition: 'Are you working at an institution without its own Research Drive environment?
- [ttl.sh (anonymous ephemeral OCI registry)](https://fshy.ajam.dev/p/ttl.md) [`storage/ttl-sh`](https://fshy.ajam.dev/api/v1/record/storage/ttl-sh): qualifies-with-caveat | free tier | anonymous? | card? | phone? | reported | stale on 2026-11-05. No account, no quota. "Free forever. Zero sign-up. Push any OCI artifact with a TTL." Storage is bounded only by the TTL, max advertised 24 hours.
- [ZeroFS](https://fshy.ajam.dev/p/zerofs.md) [`storage/zerofs`](https://fshy.ajam.dev/api/v1/record/storage/zerofs): qualifies-with-caveat | free tier | anonymous? | card? | phone? | reported | stale on 2026-11-05. Unlimited storage for active files; no file size limit.
- [Synapse (Sage Bionetworks)](https://fshy.ajam.dev/p/synapse.md) [`storage/synapse`](https://fshy.ajam.dev/api/v1/record/storage/synapse): qualifies-with-caveat | free tier | anonymous? | card? | phone? | inferred | stale on 2026-11-21. No clear public storage cap found.

## Self-hosted, the last resort (4)

Software or a node that the user installs, runs and maintains. Self-hosted options are listed last, because this site is for users who have no hardware.

- [DataLad + git-annex workflow (orchestration layer)](https://fshy.ajam.dev/p/datalad.md) [`storage/datalad-git-annex-workflow`](https://fshy.ajam.dev/api/v1/record/storage/datalad-git-annex-workflow): self-hosted, last resort | verdict qualifies-with-caveat | free tier | anonymous | no card | no phone | reported | stale on 2026-11-05. N/A — DataLad is a wrapper over git-annex; quota is the special remote's.

### Card or phone requirement not stated (3)

The data does not state whether a payment card is needed, or the identity is a placeholder that no source states. These records are listed, not dropped, and none of them is counted as no.

- [git-annex S3 special remote (backend-agnostic)](https://fshy.ajam.dev/p/branchable.md) [`storage/git-annex-s3-special-remote`](https://fshy.ajam.dev/api/v1/record/storage/git-annex-s3-special-remote): self-hosted, last resort | verdict qualifies | free tier | email? | card? | phone? | reported | stale on 2026-11-05. N/A by itself — inherits whatever S3-compatible store you point it at.
- [DVC remotes (S3 / WebDAV / SSH / HTTP / Drive) pointed at free backends](https://fshy.ajam.dev/p/dvc.md) [`storage/dvc-remotes-pointed-at-free-backends`](https://fshy.ajam.dev/api/v1/record/storage/dvc-remotes-pointed-at-free-backends): self-hosted, last resort | verdict qualifies-with-caveat | free tier | email? | card? | phone? | reported | stale on 2026-11-05. N/A — DVC ships no storage; the remote is whatever free store you configure.
- [Gitea / Forgejo self-hosted with any S3 LFS backend](https://fshy.ajam.dev/p/forgejo.md) [`storage/gitea-forgejo-self-hosted-with-any-s3-lfs-backend`](https://fshy.ajam.dev/api/v1/record/storage/gitea-forgejo-self-hosted-with-any-s3-lfs-backend): self-hosted, last resort | verdict qualifies-with-caveat | free tier | email? | card? | phone? | reported | stale on 2026-11-05. Unlimited by default: `quota.default.TOTAL = -1` means unlimited, and the soft-quota feature is 'currently not yet enabled by default'.