Free file sharing software for linux

GetMonitor project is a Python XChat script for monitoring DCC file servers requests on sharing channels and IRC servers.

Similar to AutoGet and SDFind scripts, it helps you request files, monitor queues, and search files automatically.

LimeWire is a multi-platform Gnutella client with nice features like auto-connect, groups, browse host, multiple search, upload throttling, connection quality control, library management and sophisticated filtering. LimeWire is built for the both the novice and power user.
LimeWire allows you to search for multiple files at the same time, available in several different languages, and is most famous for its ease-of-use and cross compatibility.
LimeWire will run on Windows, Macintosh, Linux, Sun, and other computing platforms.
Main features:
- Ease of use - just install, run, and search
- Ability to search by artist, title, genre, or other metainformation
- Elegant multiple search tabbed interface
- "Swarm" downloads from multiple hosts help you get files faster
- iTunes integration for Mac users
- Unique "ultrapeer" technology reduces bandwidth requirements for most users
- Integrated chat
- Browse host feature--even works through firewalls
- Added Bitzi metadata lookup
- International versions: Now available in many new languages.
- Connects to the network using GWebCache, a distributed connection system
- Automatic local network searches for lightning-fast downloads. If youre on a corporate or university network, download files from other users on the same network almost instantaneously!
- Support for MAGNET links that allow you to click on web page links that access Gnutella.

YACY is a distributed Web crawler and also a caching HTTP/HTTPS proxy. Pages that pass through the proxy are indexed and can be searched using a built-in HTTP server.
YACY peers connect each other and form a P2P-based index exchange network based on distributed hash tables. Explicit web crawls can be done locally or collaboratively, forming a global search and distributed indexing engine for the Web.
YACY also provides URL filtering with blacklist sharing among other proxy peers, individual Web and servlet page hosting, a file sharing zone, and a database engine.
Main features:
- Search your own or the global index
- Crawl your own pages or start distributed crawling
- Run your peer to support other YaCy crawlers
- Provide Information on your peer using the built-in http-server, file-sharing zone and wiki
- Built-in caching http proxy
- Indexing benefits from the proxy cache; private information is not stored or indexed
- Usage of the proxy is not a requisite for web indexing, but it enables you to access the new top-level-domains .yacy
- Filter unwanted content like ad- or spyware; share your web-blacklist with other peers
- Easy installation! No additional database required!
- No central server!
- GPLed, freeware
Enhancements:
- An auto-updater and support for multiple search networks have been added, and the option to index intranet sites in separated networks has been enabled.
- Some interface functions have also been enhanced.

GNUnet is a peer-to-peer framework with focus on providing security. All peer-to-peer messages in the network are confidential and authenticated.
GNUnet provides a transport abstraction layer and can currently encapsulate the network traffic in UDP (IPv4 and IPv6), TCP (IPv4 and IPv6), HTTP, or SMTP messages.
GNUnet supports accounting to provide contributing nodes with better service. The primary service build on top of the framework is anonymous file sharing.
The goal of the GNUnet project is to provide an infrastructure for secure peer-to-peer networking. All communication in GNUnet is authenticated and link-to-link encrypted.
The economic model makes attacks on the network harder since the economics can be used to control resource usage. GNUnet peers exchange messages using a pluggable transport service abstraction. Currently, transport services based on UDP, TCP, HTTP and SMTP are available.
The GNUnet core provides mechanisms to perform resource allocations for CPU, bandwidth and storage space. The core enforces resource limitations set by the user. GNUnet does not rely on any centralized services.
New Peer-to-Peer protocols can be easily implemented on top of the basic GNUnet infrastructure. Current protocols include anonymous file sharing, a trivial chat protocol, message throughput benchmarking and network topology visualization.
System requirements:
- GNU/Linux, FreeBSD, OpenBSD, NetBSD or Solaris.
- GNU MP Bignum Library (>= 4.0.0)
- libgcrypt (>= 1.2.0)
- gtk+ (>= 2.0)
- libextractor (>= 0.3.3)
Please keep in mind that this is a beta version. There may still be some stability, scalability and performance issues. So far the network is very small. Very little content is yet available. A subscription to GNUnet mailinglists might be a good idea.
Enhancements:
- gnunet-fuse now has support for write operations.
- The latency and performance of various database operations (for both MySQL and SQLite) was improved.
- Fixed bugs include broken error handling in the UDP transport, log rotation not deleting old log files, and crashes in gnunet-update and gnunetd.