HAVP (HTTP Anti Virus Proxy) : A proxy which scans downloads for viruses with several scanners (ClamAV, F-Prot, Kaspersky, NOD32, Sophos) at the same

HAVP (HTTP Anti Virus Proxy) is a proxy which scans downloads for viruses with several scanners (ClamAV, F-Prot, Kaspersky, NOD32, Sophos) at the same time. The main aims are continuous, non-blocking downloads and smooth scanning of dynamic and password protected HTTP traffic. It can be used with squid or standalone, and it also supports transparent proxy mode.

[Environment] No Input/Output (Daemon)
[Intended Audience] System Administrators
[License] OSI Approved :: GNU General Public License (GPL)
[Network Environment] IP :: IPv4
[Operating System] POSIX :: Linux
[Programming Language] C++
[Topic] Internet :: Proxy Servers, Internet :: WWW/HTTP, System :: Networking :: Firewalls

Rawstudio can read and convert RAW-images from many different cameras, including Nikon and Canon

Rawstudio can read and convert RAW-images from many different cameras, including Nikon and Canon. Rawstudio uses dcraw.

[Environment] Win32 (MS Windows), X11 Applications :: Gnome
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] Microsoft :: Windows
[Programming Language] C
[Topic] Artistic Software, Multimedia :: Graphics :: Capture :: Digital Camera, Multimedia :: Graphics :: Graphics Conversion

GCfilms : An application that can be used to manage a movie collection

GCfilms is an application that can be used to manage a movie collection. Users can enter all the movies they own along with associated informations such as location, category, and rating, and later search for movies using filtering criteria. A plugin system allows information such as running time, actors, and directors to be from Internet sites. Collections can be exported to HTML, XML, SQL, and CSV or imported from Ant Movie Catalog and DVD Profiler.

[Environment] X11 Applications :: GTK
[Intended Audience] End Users/Desktop
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] Microsoft :: Windows, POSIX :: BSD :: FreeBSD, POSIX :: Linux
[Topic] Information Management

TOPCASED (Toolkit in OPen source for Critical Applications and SystEm Development) id s system/software engineering workshop based on Eclipse

TOPCASED (Toolkit in OPen source for Critical Applications and SystEm Development) id s system/software engineering workshop based on Eclipse. It aims to provide the tools required to go from requirements to the implementation stages. The current version includes several graphical editors: ECORE, UML 2 (class, use cases, sequence diagrams only), structured analysis, and AADL (Architecture Analysis and Design Language). These editors are partially generated from ECORE models and models can be checked. OCL and EMF checks are supported at this time. External tools can be easily connected to the workshop thanks to a simple communication bus.

[Environment] Eclipse
[Intended Audience] Developers
[License] Eclipse Public License
[Topic] Software Development

Ziproxy : A forwarding (non-caching) proxy that gzips text and HTML files, and reduces the size of images by converting them to lower quality JPEGs

Ziproxy is a forwarding (non-caching) proxy that gzips text and HTML files, and reduces the size of images by converting them to lower quality JPEGs. It is intended to increase the speed for low-speed Internet connections and it's suitable for both home and professional usage. Ziproxy is fully configurable and also features transparent proxy mode, preemptive name resolution, operation in either daemon mode or (x)inetd mode, a detailed access log with compression statistics, basic authentication, and more.

[License] Freely Distributable, OSI Approved :: GNU General Public License (GPL)
[Programming Language] C
[Topic] Internet :: Proxy Servers

Googlr : A small app which lets you use your Google services without the distractions of a regular browser

Googlr is a small app which lets you use your Google services without the distractions of a regular browser. If you enter Gmail in Firefox you have all these things which can stop you from doing your email. As you can see from the illustration, there are many things that can hinder your productivity in Firefox. In such a distraction-filled environment, it's a wonder that you get anything done. Of course, you could simply download Thunderbird, but that wouldn't also be able to use the Google Calendar. Reader, and other useful services.

PC Cluster Consortium was established to contribute to the PC cluster market ...

PC Cluster Consortium was established to contribute to the PC cluster market through the development, maintenance, and promotion of cluster system software based on SCore cluster system software and Omni OpenMP compiler, developed by the Real World Computing Partnership.

The SCore system software and Omni OpenMP compiler copyright has been taken over by the PC cluster consortium from the Real World Computing Partnership. The future releases from the consortium will be LGPL.

ProFTPD

ProFTPD is a ftp server primarily written for the various unix variants though it will now compile under win32. It has been designed to be much like Apache in concept taking many of the ideas (configuration format, modular design, etc) from it.

GProFTPD is a GNOME frontend for the ProFTPD standalone server.

Perforce : A software configuration management system

Perforce is a software configuration management system that is fast, robust, runs on over 50 platforms, and scales to over 3000 users on a single repository. It supports atomic submits and works well over wide area networks, including the Internet.

[Topic] Software Development :: Version Control

TinyCA : A simple GUI written in Perl-Gtk to manage a small certification authority

TinyCA is a simple GUI written in Perl-Gtk to manage a small certification authority. It works as a frontend to OpenSSL. TinyCA lets you manage x509 certificates. It is possible to export data in PEM or DER format for use with servers, as PKCS#12 for use with clients, or as S/MIME certificates for use with email programs. It is also possible to import your own PKCS#10 requests and generate certificates from them. It also lets you create and manage SubCAs for more complex setups. The most important certificate extensions can be configured with the graphical frontend. English, German, Spanish, and Czech translations are included.

[Environment] X11 Applications
[Intended Audience] System Administrators
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] POSIX :: Linux
[Programming Language] Perl
[Topic] Security

pjsip and pjmedia : An SIP and media stack written in C, and optimized for high performance and a small footprint

pjsip and pjmedia is an SIP and media stack written in C, and optimized for high performance and a small footprint. It has many SIP and media features such as a layered API, dialog usages, high level invite session abstraction, an event framework, SIP presence/SIMPLE, instant messaging, RTP/RTCP, a conference bridge, silence detection, PLC, and so on, as well as extensive documentation.

[Intended Audience] Developers
[License] OSI Approved :: GNU General Public License (GPL), Other/Proprietary License with Source
[Operating System] OS Independent
[Programming Language] C
[Topic] Communications :: Internet Phone, Communications :: Telephony

Sherlock Holmes : A modular system for gathering and indexing textual data and searching in it

Sherlock Holmes is a modular system for gathering and indexing textual data and searching in it. The most popular application is, of course, indexing of Web pages ranging from small Web sites to whole top-level domains, but other data sources, parsers, and user interfaces can be added easily.

[Environment] No Input/Output (Daemon)
[Intended Audience] Developers, System Administrators
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] POSIX :: Linux
[Programming Language] C, Perl
[Topic] Internet :: WWW/HTTP :: Indexing/Search, Text Processing :: Indexing

XML Copy Editor

XML Copy Editor is an XML editor with DTD/XML Schema/RELAX NG validation, XSLT, XPath, pretty-printing, syntax highlighting, folding, tag completion/locking, and a spelling and style check.

[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] Microsoft :: Windows :: Windows NT/2000/XP, POSIX :: Linux
[Programming Language] C++

Vyatta Enterprise-Class Open Source Router

Vyatta enterprise grade open source router platform, the Vyatta Open Flexible Router (OFR). Compared to today's expensive, inflexible closed-source solutions, the OFR offers the alternative of dramatically improved price/performance and open flexibility. Using the OFR and industry-standard x86 hardware, users can create a high-performance router for WAN and LAN routing.

OpenSSH : A FREE version of the SSH connectivity tools that technical users of the Internet rely on

OpenSSH is a FREE version of the SSH connectivity tools that technical users of the Internet rely on. Users of telnet, rlogin, and ftp may not realize that their password is transmitted across the Internet unencrypted, but it is. OpenSSH encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other attacks. Additionally, OpenSSH provides secure tunneling capabilities and several authentication methods, and supports all SSH protocol versions.

RPhoto : A handy image editor to simplify cropping of digital camera pictures and avoid white borders introduced by incorrect height/width ratios

RPhoto is a handy image editor to simplify cropping of digital camera pictures and avoid white borders introduced by incorrect height/width ratios. It also has lossless rotate and flip features, as well as a unique way to rectify a bad angle by only drawing a horizontal or vertical line.

[Environment] Win32 (MS Windows), X11 Applications :: GTK
[Intended Audience] Advanced End Users
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] Microsoft :: Windows, Microsoft :: Windows :: Windows NT/2000/XP, POSIX, POSIX :: Linux
[Programming Language] C++
[Topic] Multimedia :: Graphics :: Capture :: Digital Camera, Multimedia :: Graphics :: Graphics Conversion

FreeSWITCH : An open source telephony application written in C...

FreeSWITCH is an open source telephony application written in C, built from the ground up and designed to take advantage of as many existing software libraries as possible. FreeSWITCH makes it possible to build an open source PBX system or an open source voip switching platform as well as unite various technologies such as SIP H.323, IAX2, LDAP, Zeroconf, XMPP / Jingle etc. FreeSWITCH can also be used to interface with other open source PBX systems such as OpenPBX, Bayonne, YATE or Asterisk.

AppWeb : An embedded HTTP Web server that has been designed with security in mind

AppWeb is an embedded HTTP Web server that has been designed with security in mind. It is integrated directly into customers' applications and devices, providing easy development and deployment of Web-based applications and devices. It is fast (over 3,500 requests per second) and compact (from 110K) and includes support for dynamic page creation, server-side embedded Javascript, in-process CGI, dynamically loadable modules, SSL, Digest authentication, Virtual hosts, Apache-style configuration, logging, and single- and multi-threaded apps.

[Environment] No Input/Output (Daemon)
[Intended Audience] Developers, System Administrators
[License] OSI Approved, OSI Approved :: GNU General Public License (GPL), Other/Proprietary License with Source
[Network Environment] IP, IP :: IPv4
[Operating System] MacOS X, Microsoft, Microsoft :: Windows, Microsoft :: Windows :: Windows NT/2000/XP, Other OS, POSIX :: Linux, Unix
[Programming Language] C, C++, JavaScript, PHP
[Topic] Internet :: WWW/HTTP, Internet :: WWW/HTTP :: HTTP Servers, Software Development :: Embedded Systems, Software Development :: Libraries

Decimail Webmail : An email application written in Javascript

Decimail Webmail is an email application written in Javascript. It is almost entirely client-side, and so has the potential for a rich and responsive user-interface. The server-side requirement is a Web server, a simple IMAP-to-HTTP proxy, and any IMAP server; this should result in lower server load than some CGI Webmail applications.

[Environment] Web Environment
[Intended Audience] End Users/Desktop
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] POSIX
[Programming Language] C++, JavaScript
[Topic] Communications :: Email :: Email Clients (MUA), Internet :: WWW/HTTP :: Dynamic Content

AMS (Asterisk Manager Suite) : A suite of software intended to make day to day administration and monitoring of an Asterisk PBX server easier

AMS (Asterisk Manager Suite) is a suite of software intended to make day to day administration and monitoring of an Asterisk PBX server easier. It contains a daemon that acts as a proxy to Asterisk's Manger Interface and a GTK GUI application for monitoring and administration.

[Environment] Console (Text Based), Win32 (MS Windows), X11 Applications :: GTK
[Intended Audience] Advanced End Users, Developers, System Administrators
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] Microsoft :: Windows :: Windows NT/2000/XP, POSIX
[Topic] Communications :: Telephony, Office/Business, System :: Systems Administration

gSTM, the Gnome SSH Tunnel Manager : A front-end for managing SSH-tunneled port redirects

gSTM, the Gnome SSH Tunnel Manager, is a front-end for managing SSH-tunneled port redirects. It stores tunnel configurations in a simple XML format. The tunnels, with local and remote port redirections, can be created, deleted, modified, and individually started and stopped through one simple interface. It is useful for anyone wanting to securely access private services over an encrypted tunnel.

[Environment] X11 Applications :: Gnome
[Intended Audience] Advanced End Users, Developers, End Users/Desktop, System Administrators
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] POSIX :: Linux
[Programming Language] C
[Topic] Communications, Desktop Environment :: Gnome, Internet, Security :: Cryptography, System :: Networking

Wefis : A Web-based file manager allowing users to securely manage files hosted on the server via HTTP(S)

Wefis is a Web-based file manager allowing users to securely manage files hosted on the server via HTTP(S). It is based on AJAX technology and the Prasi security system. Wefis allows users to perform most of the actions commonly done via FTP. They can upload a near-unlimited number of files at any one time, do multiple actions on a selection of files, download individual items, or many in a tar.gz archive, and more. Quotas and read-only access can be enforced.

Environment] Web Environment
[Intended Audience] System Administrators
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] POSIX
[Programming Language] Perl

FreeTDS : A set of libraries for Unix and Linux that allows your programs to natively talk to Microsoft SQL Server and Sybase databases

FreeTDS is a set of libraries for Unix and Linux that allows your programs to natively talk to Microsoft SQL Server and Sybase databases.

Technically speaking, FreeTDS is an open source implementation of the TDS (Tabular Data Stream) protocol used by these databases for their own clients. It supports many different flavors of the protocol and three APIs to access it. Additionally FreeTDS works with other software such as Perl and PHP, providing access from those languages as well.

The OpenIPMP project aims to provide interoperable DRM software that can be ported to any platform

The OpenIPMP project aims to provide interoperable DRM software that can be ported to any platform (including Windows, Mac, Linux and embedded platforms). Unlike proprietary DRM solutions, OpenIPMP adheres to a variety of open standards, including:

• OMA (Open Mobile Alliance) v2 DRM specifications
• ISMAcryp specifications for MPEG-4 streaming and local playback
• MPEG’s IPMP specifications for MPEG-2 and MPEG-4

The OpenIPMP project can be downloaded from SourceForge.

# License : Mozilla Public License 1.1 (MPL 1.1)
# Operating System : 32-bit MS Windows (95/98), All 32-bit MS Windows (95/98/NT/2000/XP), All POSIX (Linux/BSD/UNIX-like OSes), OS X, Other
# Programming Language : C++, Java
# Topic : Sound/Audio, Video, Security

Hyperic HQ

Hyperic HQ: open source platform for managing all commercial and open source IT
assets, and also unveiled a new community portal to promote collaborative
development of the application. Hyperic announced last month that it has
moved to an open source license model after two years of deploying its
previously commercial IT management solution in over 100 companies
including several Fortune 100 corporations.

PasTmon (Passive Application Response Time Monitor) passively monitors your application servers, measuring and reporting user response times...

PasTmon (Passive Application Response Time Monitor) passively monitors your application servers, measuring and reporting user response times, throughput and congestion. It currently works with HTTP, telnet, rlogin, rsh, FTP (control channel), SMTP, POP3, and IRC. Measurements are recorded in a PostgreSQL database and are presented graphically via a PHP Web front-end using R statistical analysis scripts to create the plots.

[Environment] No Input/Output (Daemon), Web Environment
[Intended Audience] System Administrators
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] POSIX, POSIX :: Linux
[Programming Language] C, Other, Perl, PHP
[Topic] Communications, Internet, Internet :: WWW/HTTP :: HTTP Servers, Internet :: WWW/HTTP :: Site Management, Scientific/Engineering :: Visualization, System :: Monitoring, System :: Networking, System :: Networking :: Monitoring

SmokePing : A network latency monitor which works in a way that is similar to MRTG

SmokePing is a network latency monitor which works in a way that is similar to MRTG. It measures network latency to a configurable set of destinations on the network, and displays its findings in easy-to-read Web pages. SmokePing has special support for monitoring hosts with dynamic IP addresses. SmokePing uses RRDtool as its logging and graphing back-end, making the system very efficient. The presentation of the data on the Web is done through a CGI which creates graphs on demand.

[Environment] No Input/Output (Daemon), Web Environment
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] POSIX, Unix
[Programming Language] Perl
[Topic] System :: Benchmark, System :: Monitoring, System :: Networking :: Monitoring

The Multi Router Traffic Grapher (MRTG) : A tool to monitor the traffic load on network-links

The Multi Router Traffic Grapher (MRTG) is a tool to monitor the traffic load on network-links. MRTG generates HTML pages containing GIF/PNG images which provide a live visual representation of this traffic.

[Environment] Console (Text Based)
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] Microsoft :: Windows :: Windows NT/2000/XP, POSIX
[Programming Language] Perl
[Topic] System :: Networking :: Monitoring

RRDtool (Round Robin Database Tool) : Time-series data storage and graphing utility created by the author of MRTG

RRDtool (Round Robin Database Tool) is time-series data storage and graphing utility created by the author of MRTG. Using RRDtool, you can write your own MRTG-like tools in a matter minutes with only a few lines of Perl or shell code.

[Environment] Console (Text Based)
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] Microsoft :: Windows :: Windows NT/2000/XP, POSIX
[Programming Language] C, Perl
[Topic] Database, Multimedia :: Graphics, Software Development :: Libraries, System, System :: Networking :: Monitoring

Roadnav : An in-car navigation system capable of running on a variety of operating systems

Roadnav is an in-car navigation system capable of running on a variety of operating systems, including Linux, Windows, and Mac OS X. It can obtain a car's present location from a GPS unit, plot street maps of the area, and provide verbal turn by turn directions to any location in the USA. It uses the free TIGER/Line files from the US Census Bureau to build the maps, along with the GNIS state and topical gazetteer data from the USGS to identify locations.

[Environment] MacOS X, Win32 (MS Windows), X11 Applications
[Intended Audience] End Users/Desktop
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] MacOS X, Microsoft :: Windows, POSIX :: Linux
[Programming Language] C++
[Topic] Multimedia :: Graphics :: Viewers, Scientific/Engineering :: Geographical

mairix : A tool for indexing and searching email messages stored in Maildir, MH, or mbox folders

mairix is a tool for indexing and searching email messages stored in Maildir, MH, or mbox folders. The index contains a map of which words occur in which parts of which messages. Searches on this index are fast and generate symlinks to the matching messages in a new Maildir or MH folder, or copies of matching messages in an mbox folder, which can be browsed normally in a mail client.

[Environment] Console (Text Based)
[Intended Audience] End Users/Desktop
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] POSIX, POSIX :: Linux
[Programming Language] C
[Topic] Communications :: Email, Communications :: Email :: Filters, Utilities

PlayStation Portable Video Converter (PSPVC) : A FFMPEG front-end for converting video files for the PSP

PlayStation Portable Video Converter (PSPVC) is a FFMPEG front-end for converting video files for the PSP. It allow you to queue severals conversions with different parameters for each. It supports MPEG4/SP (all firmware) and H264/AVC (firmware 2.0+).

[Environment] X11 Applications :: GTK
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] POSIX :: Linux
[Programming Language] C
[Topic] Multimedia :: Video :: Conversion

OpenEMM : A feature-rich industrial-strength enterprise software for email marketing

OpenEMM is a feature-rich industrial-strength enterprise software for email marketing. OpenEMM runs on top of a proven open source software stack: Linux, MySQL, and a Web container like Tomcat.

[Environment] Web Environment
[Intended Audience] Advanced End Users, System Administrators
[License] OSI Approved :: Mozilla Public License (MPL)
[Operating System] POSIX :: Linux
[Programming Language] C, Java, Python
[Topic] Communications :: Email :: Mailing List Servers, Office/Business :: CRM

Openwsman : The Web Services Management specification and to expose system management information on the Linux operating system using the WS-Managemen

Openwsman is a project intended to provide an open-source implementation of the Web Services Management specification and to expose system management information on the Linux operating system using the WS-Management protocol. WS-Management is based on a suite of web services specifications and usage requirements that exposes a set of operations focused on and covers all system management aspects.

[Intended Audience] System Administrators
[License] OSI Approved :: Artistic License, OSI Approved :: BSD License (original)
[Operating System] POSIX :: Linux
[Programming Language] C
[Topic] System :: Clustering/Distributed Networks, System :: Networking :: Monitoring :: Hardware Watchdog, System :: Systems Administration

OpenSER : A high-performance SIP (RFC3261) server, with a flexible architecture and many extensions

OpenSER is a high-performance SIP (RFC3261) server, with a flexible architecture and many extensions. The server implements proxy, registrar, redirect, and location SIP/VoIP services. It has support for UDP/TCP/TLS transport layers, ENUM, AAA via database, RADIUS, DIAMETER, gateways to SMS and XMPP, least cost routing, load balancing, NAT traversal, and call processing language.

[Environment] No Input/Output (Daemon)
[Intended Audience] System Administrators
[License] OSI Approved :: GNU General Public License (GPL)
[Network Environment] IP
[Operating System] POSIX :: BSD, POSIX :: Linux, POSIX :: SunOS/Solaris, Unix
[Programming Language] C
[Topic] Communications :: Telephony

Do178Builder: A documentation tool used throughout the software/hardware development effort, helping to produce the DO-178B/254 documentation much l

Do178Builder is a documentation tool used throughout the software/hardware development effort, helping to produce the DO-178B/254 documentation much less painfully. A major obstacle to creating airborne products, for smaller developers, is the necessity to qualify the software per RTCA/DO-178B, or hardware per RTCA/DO-254. Without this qualification, airborne products cannot be deployed.

[Environment] Win32 (MS Windows), X11 Applications
[Intended Audience] Developers, Quality Engineers
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] Microsoft :: Windows :: Windows 95/98/ME, POSIX :: Linux, Unix
[Programming Language] C++
[Topic] Documentation, Software Development, Software Development :: Documentation, Software Development :: Embedded Systems, Software Development :: Quality Assurance, Software Development :: Testing, Text Editors :: Documentation

Globule : A module for the Apache Web server that allows a given server to replicate its documents to other Globule servers

Globule is a module for the Apache Web server that allows a given server to replicate its documents to other Globule servers. Clients are automatically redirected to one of the available replicas.

[Environment] No Input/Output (Daemon), Web Environment, Win32 (MS Windows)
[Intended Audience] Advanced End Users, Developers, System Administrators
[License] OSI Approved :: BSD License (original)
[Operating System] Microsoft :: Windows, POSIX :: BSD :: FreeBSD, POSIX :: Linux, POSIX :: SunOS/Solaris, Unix
[Programming Language] C++
[Topic] Internet :: WWW/HTTP, Internet :: WWW/HTTP :: HTTP Servers

aria2 : A utility for downloading files

aria2 is a utility for downloading files. It has completely new design concept from its predecessor, Aria, and is written from scratch. aria2 has a segmented downloading engine in its core. It can download one file from multiple URLs or multiple connections from one URL. This results in very high speed downloading, much faster than ordinary browsers. This engine in was implemented in a single-thread model. The architecture is clean and easy to extend. aria2 currently supports HTTP, FTP, and BitTorrent. Supported protocols are HTTP/HTTPS/FTP/BitTorrent. It also supports Metalink version 3.0.

[Environment] Console (Text Based)
[Intended Audience] End Users/Desktop
[License] OSI Approved :: GNU General Public License (GPL)
[Operating System] POSIX :: Linux
[Programming Language] C++
[Topic] Communications :: File Sharing, Internet :: File Transfer Protocol (FTP), Internet :: WWW/HTTP

The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material

The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material.

Research institutions worldwide use DSpace as an institutional repository, a learning object repository, for records management, and more. The DSpace open source platform is freely available so you can customize and extend it to suit your needs.

SIMILE: focused on developing robust, open source tools based on Semantic Web technologies that improve access, management and reuse among digital ass

SIMILE is a joint project conducted by the W3C, MIT Libraries, and MIT CSAIL. SIMILE seeks to enhance inter-operability among digital assets, schemata/vocabularies/ontologies, metadata, and services. A key challenge is that the collections which must inter-operate are often distributed across individual, community, and institutional stores. We seek to be able to provide end-user services by drawing upon the assets, schemata/vocabularies/ontologies, and metadata held in such stores.