Features

Main technical features :

• P2P network architecture
• Cross-platform : can work on any operating system which can run a JVM
• Parsing capabilities :
  • TXT clear text
  • CSV tabular data
  • RTF rich text
  • XML structured data
  • HTML web documents
  • RSS, RDF, Atom Newsfeeds
  • MS Office Excel, Word, Powerpoint
  • MS Visio diagrams
  • ODF OpenDocument
  • PDF Portable Document
  • PS Postscript
  • SWF Adobe Flash
  • VCard Electronic Business Card
  • Archives : 7zip, zip, bz2, tbz, tbz2, tar.gz, rpm, jar, apk
  • Images : png, jpg, gif, svg, ico, bmp, tif, psd
  • CAD Drawings : dwg
  • MM FreeMind mind maps
  • Audio : mp3, ogg, oga, m4a, m4p, flac, wma, sid
  • Torrent torrent metadata
• OpenSearch interface
• Load balancing
• Automated index redundancy distribution
• Direct import of Fremd-DB (Surrogate Harvester API)
• Automatic indexing through a proxy filter
• Embedded web server
• Internal domain names ending in .yacy
• P2P bootstrap from central seed lists
• Spell check
• Filter expression. e.g. : filetype:pdf
• UTF-8 encoding

Technologies

Below are the main technologies used in the project :

• Java 11
• XHTML, CSS, JavaScript
• JSON
• Dublin Core
• External components :
  • Apache Commons Toolkit
  • Apache HttpComponents
  • Apache Jakarta Oro RegExp
  • Apache POI API for Microsoft Documents
  • Apache James Mime4j
  • Apache Lucene
  • Apache Solr
  • Apache PDFBox and FontBox
  • Apache Xerces XML Parser
  • Apache XML APIs
  • Bouncy Castle Crypto APIs : Provider, Mail
  • GlassFish Servlets
  • Guava
  • ICU International Components for Unicode
  • J7Zip
  • Java CIFS Client Library
  • Jazzy Spelling API
  • Jaudiotagger
  • JSch Java Secure Channel
  • JDBC
  • Jetty Web server
  • jQuery JavaScript library
  • JSONIC json encoder/decoder
  • json-simple toolkit
  • jsoup Java HTML Parser
  • language-detection library
  • metadata-extractor API
  • Mozilla charset detector
  • Noggit JSON parser
  • Restlet Framework
  • SLF4J Simple Logging Facade for Java
  • Spatial4j spatial/geospatial library
  • Stax2 API
  • TwelveMonkeys ImageIO plugins : BMP, TIFF
  • Giant Java Tree TAR Package
  • WebCat SWF Package
  • Weupnp tiny UPnP client
  • Woodstox XML processor
  • XMP Adobe's Extensible Metadata Platform
• Build and tests utils
  • Apache Ant Building Environment
  • JRPM
  • JUnit testing framework

Issues

• Stability
• Performance
• Languages support
• Very simple stemming

Converted from http://wiki.yacy.de/index.php?title=En:Features, may be outdated