Backblaze B2
usage-based
S3-compatible cloud object storage with transparent pricing at a fraction of AWS S3 cost.
Open source cloud storage software to evaluate in 2026
Open source cloud storage software gives teams full code access, no per-user licensing, and the freedom to self-host, but operational cost replaces license cost. These are the open source options in this category, followed by the full list for comparison.
No product in this category matches the open source filter yet, so all 9 are listed below.
Back to all Cloud Storage Software tools, or browse the full software directory. You can also run head-to-head comparisons or read about our review methodology.
For background on scoring, see how rankings work. Our editorial articles add deeper analysis, the glossary clarifies vendor terminology, and our calculators help estimate ROI before the shortlist narrows further.
All cloud storage software
Nothing in this category met the open source filter, so the full cloud storage software category is listed here instead.
Box
subscription
Enterprise content management and cloud storage platform with security, compliance, and workflow automation.
Dropbox Business
subscription
Cloud storage and collaboration platform with file sync, sharing, team folders, and admin controls.
Google Workspace
Per-user · Cloud · Free trial
Through Google Identity Services, Workspace handles identity and access management alongside mail and documents, so SSO and directory capabilities arrive without a separate platform purchase. Teams fully committed to the Google ecosystem see the clearest benefit, since an identity layer already sitting inside the productivity suite takes one system out of the stack.
IDrive
subscription
Cloud backup and storage service for PCs, Macs, mobile devices, and servers with file versioning.
pCloud
subscription
Swiss-based cloud storage with lifetime plans, client-side encryption, and cross-platform file access.
Sync.com
subscription
Zero-knowledge encrypted cloud storage with file sharing, backup, and team collaboration features.
Tresorit
subscription
End-to-end encrypted cloud storage built for regulated industries with zero-knowledge architecture.
Wasabi
subscription
Hot cloud storage with no egress fees, no API call charges, and S3-compatible interface.
Common questions about open source cloud storage software
Is open source cloud storage software really free?
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The license is free, but hosting, maintenance, patching, and upgrades replace the vendor's license fee. Teams without dedicated ops resources often spend more on self-managed open source than on a managed commercial alternative.
When should I choose open source over commercial cloud storage software?
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Open source is strongest when you need full code control, on-premises deployment for compliance, or want to avoid vendor lock-in. It is weaker when your team lacks the ops capacity to maintain, patch, and scale the deployment.
What should I check before deploying open source cloud storage software?
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Check community activity (commits, issues, and releases in the last six months), commercial support options, documentation quality, and the total operational burden against a managed alternative. A dormant project with no commercial backing is a risk.