Free peer software for linux

iPeer is an application to develop and deliver rubric-based peer evaluations, to review and release student comments, to build progress report forms online, and to analyze evaluation results.
iPeer features a built-in user management system, data import/export, and an easy-to-use installer.
Main features:
- Assignment creation.
- Custom rubric creation.
- User management system, including bulk import of students and groups.
- Student reminders via email.
- Reminder scheduling.
- Profile management.
- Student Feedback System.
- Release Comments to Students.
- Wizard Feature, Step by Step Guide for New Users.
- Easy-to-Use Installer.
- Simple Evaluatoin for TBL (Team-Based Learning).
- Export Results to Excel or txt files.
- Student Self Registration.

PeerProtect is an addon for Jays firewall that generates a file which contains all IP addresses from the RIAA and MPAA, etc. and will protect peer-to-peer programs from them. The Database can be copied from PEERGUARDIAN or IPPREFIX.

Fast Messaging Peer to Peer (FM P2P) is a simple P2P program that forms a TCP-based overlay network by which a user may chat or share files.

Why name this FastMessaging when its anything but fast? Simply put, it is a reference to the underlying functioning of the application. TCUP, the protocol used to do the overlay network (the network we build ontop of an existing TCP/IP network) is message based.

We think it is Fast because there is no queueing or long searches. FastMessaging is built to construct moderately sized networks which have reasonably high responsiveness at the cost of global information sharing.

Perhaps thats not the best reasoning, but it works. Its just a name and the application needs a better name anyway. For now I just refer to it as FM.

Dijjer is a peer-to-peer HTTP cache, designed to allow the distribution of large files from Web servers while virtually eliminating the bandwidth cost to the files publisher.

Dijjer project is designed to be simple, elegant, and to cleanly integrate with existing applications where possible. Dijjer uses "UDP hole punching" to allow it to operate from behind firewalls without any need for manual reconfiguration.

Dijjers distributed and scalable content distribution algorithm is inspired by Freenet.

ZMsgServer is a peer-to-peer LAN messaging application written in the Java programming language. I have successfully tested the application on a variety of platforms, under a variety of network conditions, and even in its infancy, it is a very nicely featured application. I use it regularly for sending "reminders" and code-snippets across the network to other machines. A fast and simple way to get a message to another user on the LAN.

Until I get some more comprehensive documentation online, here is a brief overview of how ZMsgServer works. Each machine on the LAN runs an instance of the server, listening on port 7999. If you have another service on your network that uses port 7999, then change the source to a free port. Ill make this configurable via the GUI in a later version.

When another host wants sends a message, it uses the next available port to broadcast the message, which is received via port 7999 on the recipient machine. Messages are sent via an ObjectOutputStream and are instances of the ZMessage class, which is nothing more than a nice neat container for four strings. These messages are received on the targets machine, decomposed, and displayed on the GUI.

When the documentation is online, all will become clear, but for now, download the source code below, as its the best documentation available!

Torrent Swapper is an open sourced sociable peer to peer file-sharing client based on the Bittorrent protocol that is ideal for high-speed distribution of large files that has a basic understanding of human friendships, of user tastes in content, and of Internet connectivity between users.
Torrent Swapper project supports simultaneous downloads, download queue, selected downloads in torrent package, fast-resume, speed limits, port mapping, disk cache, proxy, ip-filter, etc.
Main features:
- Amazon-like recommendations to get interesting files
- Doubling the download speed by using the upload capacity of friends
- Real-time P2P file sharing with P2P video streaming
- Showing the locations of seeders / leechers of the same content with city-level accuracy on a world map
- Multiple downloads in a single window
- Queueing system with priority
- Supporing pause, stop, resume, queue, remove operations
- Supporting global setting such as upload and download limiting
- Supporting local setting for each torrent as well
- And much more...

PoJoe Component Libraries project is a set of Java POJO components, originally developed for OSMQ. Developers have found these components useful in building robust enterprise applications.
Of note are: a FIFO queue that utilizes memory until a size threshold is reached, paging overflow elements to a disk cache; a dynamic discovery mechanism for locating remote processes by name over an IP network, eliminating the need to identify a remote service with a specific host computer; and a set of peer-to-peer async message components that support n concurrent message publishers for each named subscriber.
Enhancements:
- Minor enhancements and bugfixes, and changing the license from GNU Lesser to Apache 2.0.