Secure Peer-to-Peer Cloudless File Sync SaaS

The user explicitly requests "cloudless file/folder syncing between 2 computers on different networks" and mentions existing solutions like GoodSync are partly cloud-based. This highlights a strong desire for direct, private, and secure file synchronization without relying on third-party cloud storage, likely driven by privacy concerns, data sovereignty, or specific compliance needs. While the data itself wouldn't pass through a central cloud, a 'thin' SaaS layer can facilitate the secure setup, discovery, and management of these peer-to-peer connections, making it a viable SaaS opportunity.

Product Form: A hybrid model with installable desktop clients for the core syncing, supported by a minimal SaaS backend for secure connection management and discovery.

Key Features:

• True Peer-to-Peer Sync: Files are transferred directly between devices, never residing on a central cloud server.
• End-to-End Encryption: All data encrypted in transit and at rest, with user-managed keys for maximum security.
• Cross-Network Connectivity: Intelligent NAT traversal and firewall negotiation to establish direct connections between devices on different networks without complex manual setup.
• Secure Device Pairing: A secure, one-time pairing process for new devices, facilitated by a minimal SaaS component for initial key exchange and trust establishment.
• Version Control & Conflict Resolution: Basic versioning for files and smart conflict resolution mechanisms.
• Selective Sync: Users can choose specific folders or files to sync.
• Performance Optimization: Efficient delta syncing to transfer only changed parts of files.
• Centralized Management (for teams): A SaaS dashboard for small businesses to manage sync relationships, monitor status, and administer user access without touching the data.

Expected Revenue: This SaaS could be priced with a tiered subscription model: a basic tier for individual users (e.g., $5-15/month per user or per device pair) providing the core P2P syncing and secure connection management, and higher tiers for small teams or businesses ($25-100+/month) that include more devices, advanced management features, and priority support. The value proposition is high for privacy-conscious individuals, freelancers, and small businesses handling sensitive data who cannot use public clouds but need robust syncing capabilities.