HTM-Drive — Cloud Storage with OneDrive Integration

Project at a glance

The Smart Lead Tech team built HTM-Drive as a professional cloud storage alternative for enterprises and SMBs. It pairs fast uploads, strong encryption and deep Microsoft OneDrive integration, so teams can collaborate seamlessly across devices without ever losing data.

The challenge

• Upload large files (hundreds of megabytes) without restarting on connectivity drops.
• Encrypt files in transit and at rest with per-user key material.
• Two-way sync with Microsoft OneDrive without duplication or conflicting versions.
• Per-file and per-folder permissions with a complete access audit trail.

What we built

• A resumable, chunked upload pipeline on Laravel 11.
• OAuth 2.0 integration with Microsoft Graph API to drive OneDrive.
• Per-file AES-256 encryption with keys stored in HashiCorp Vault.
• A React.js UI with drag-and-drop and instant preview for common formats.

Outcome: a 500 MB upload in under 20 seconds on fiber, with full resume after any interruption.

Highlight features

1. Drag-and-drop file and folder management.
2. Deep two-way OneDrive integration.
3. Secure share links with expiry or password protection.
4. AES-256 encryption in transit and at rest.
5. Granular per-file and per-folder permissions.
6. Full audit trail for every access or change.
7. In-platform preview for PDFs, images and Office files.

Engineered by the Smart Lead Tech team — enterprise-grade secure cloud storage.