Osiris Serverless Portal System (usually abbreviated as Osiris sps or Osiris) is a freeware program used to create web portals distributed via p2p network and autonomous from centralized servers. It's available for Microsoft Windows and GNU/Linux operating system.

Unlike common tools used to "publish information" on the Internet eg CMS, Forums or Blogs which are based on a centralized system, the data of a portal created by Osiris are shared via P2P between all its participants.

Thanks to this architecture in which all the contents necessary for navigation (both graphic and textual) are replicated on every machine you can use the portal without a central server (serverless), This prevents the possibility that the portal is not accessible due to DDoS attacks, Internet Service Provider limitations (like traffic shaping and censorship) or hardware failure. In this way a web portal can be cost-free and free from external control.

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Security

* The system is anonymous. It's not possible to make an association between a user and his IP address,
hence you cannot trace the person who created a content.

* Even with physical access to an installed Osiris is impossible to trace the actual user without knowing his password.

* 2048-bit digital Keys guarantee the authenticity of content (digitally signed in order to prevent counterfeiting) and the confidentiality of private messages (encrypted between the sender and recipient).

* To prevent the ISP from intercepts traffic, connections and data transfer to a portal (called alignment) Osiris use random ports which are cloaked during handshake and encrypted point-to-point via 256 bits AES.

* The P2P distribution allows content to be present in multiple copies as a guarantee of survival in case of hardware failure or nodes off-line.

* As the portals are saved locally, you can read the contents even if you work off-line.