Open-source alternatives to popular software
OSS Alternatives covers a small number of proprietary tools in depth rather than a large, shallow directory. Each page below ranks genuinely open-source alternatives by GitHub activity and spells out license, self-hosting, and pricing so you can pick one with confidence.
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Cloud Storage alternatives
Docuware
Document management and workflow automation
3 alternatives
Mega
End-to-end encrypted cloud storage
12 alternatives
Veeam
Backup and recovery for virtual, cloud, and physical workloads
2 alternatives
Tresorit
End-to-end encrypted cloud storage and file sharing
12 alternatives
Apple AirDrop
Wireless file sharing between nearby Apple devices
2 alternatives
Azure Blob Storage
Microsoft cloud object storage for unstructured data
6 alternatives
Cloudflare R2
S3-compatible object storage with zero egress fees
5 alternatives
Dropbox
Cloud file storage, sync, sharing, and collaboration
14 alternatives
Amazon S3
Cloud object storage for applications and data
6 alternatives