Social networking tools
Elgg: A tool to build a social networking platform for businesses, schools, universities, groups and associations.
Xoops: A well-known, extensible CMS that allows you to build your own feature rich social network.
Friendika: A distributed social network private, that's secure, feature-rich, and built on open protocols.
Pligg CMS: A content management platform that powers tens of thousands of websites. It specializes in creating social publishing networks, where users submit and promote content similar to sites like Digg .
Appleseed: Still in active development, but when done, you'll be able to pick an Appleseed compatible site, sign up, connect with friends, send messages, share photos, etc
YANG J: Enables you to generate social networks given various social rules observed in real population. It generates realistic networks to be used in individual-centric models, teaching or benchmarking.
Mahara: An online collection of reflections and artifacts (such as images, blogs and documents) that students can use to demonstrate development over time to various audiences.
Scuttle: A web-based social bookmarking system. It allows multiple users to store, share and tag their favourite links online.
Family Connections: A private social networking website designed specifically for families to be as easy to use as possible.
Amun: A social content management system written in PHP and based on the PSX framework
Contact management tools
CentraView: A browser-based Enterprise Java (J2EE) Contact Management, Groupware, Collaboration, CRM, SFA, and Project Management software.
Dornbase: A complete web-based contact management software package written in PHP for people who want to securely access contact information from any computer.
Java AddressBook: Provides contacts, bookmarks, and password management. It is based on Ajax and Swing UI.
Kwok Information Server: Kwok Information Server is an open source IT management system that provides IT asset tracking (hardware inventory and software licenses), issue tracking (helpdesk), and knowledge base management.
SeaCow: A contact and task manager that allows you to manage and print contact and task reports.
Web Contact Manager: Manages contacts, maps, imports and exports to Microsoft Outlook and Excel.
PIM Xtreme: A Personal Information Manager software with financial modules (accounts, reports, etc.), contacts, schedules, tasks, alerts, encrypted notes and more!
Identity management tools
AccesStream: A Java-based, embeddable identity and access management (IAM), security and access reporting platform. AccesStream includes Single Sign-On using SAML 2.0 and provides profile storage with LDAP v3 access for integration with Linux PAM.
Project Aristotle: An openLiberty.org project that enables developers to write applications using identity-related information to access information in a multi-protocol environment.
Velo: An open Identity and Access Management platform, with many IDM services such as provisioning, access control, password synchronization, audit & compliance, self service interfaces and much more.
Joomla Identity Manager: Manage people's identity and their accounts, agentless, on various operating systems and/or applications.
OpenEMed: A distributed healthcare and medical information framework-based on open standards including those of HL7 and the healthcare taskforce of the OMG.
DRRE: The tool accepts data in a wide variety of formats, transforms it using complex business rules and sends them onwards to directories, databases, message queues and a wide variety of other destinations.
Modular Access Control System: A modular, flexible and extensible Identity and Access Management system for integrated login, access and profile management across disparate security domains.
IdMUnit: For a limited time TriVir, a platinum Novell partner specializing in the identity management and Novell consulting space, is including the JDBC connector with the public release of IdMUnit 2.1 for those users who complete a short IdMUnit Survey.
logitester: A web application that is capable of comparing a single object across several LDAP sources at once.
Mistral-IdM: Mistral-IdM is a project whose aim is to provide an identity management system, with advanced authentication and authorization abilities, based on standards (SAML, XACML, XKMS), providing a user-friendly administration console.
Storage management tools
StorageIM: A monitoring console for storage systems and networks designed around industry standards. StorageIM supports most storage arrays, switches, HBAs and storage libraries.
Wandora: A general purpose information extraction, management, and publishing environment based on Topic Maps and Java.
WBSAirback: Complete storage and backup system with web administration that integrates many useful tools, supports logical volumes, snapshots, CIFS and NFS shares, tape drives, libraries, VTLs, iSCSI devices, etc.
OpenQRM: An open source systems management platform which integrates with existing components in enterprise data centers. OpenQRM focuses on automating storage, virtualization and cloud computing.
Openfiler: A browser-based network storage management utility. Linux-powered, Openfiler delivers file-based Network Attached Storage (NAS) and block-based SAN in a single framework.
Q-Dir: Makes your files and folder easy to manage. It provides fast and easy access to your hard disks, network folders, USB sticks, floppy disks and other storage devices.
Zonomania: A web-based application to document a SAN (Storage Area Network) environment. It is a powerful tool in the hands of a SAN Administrator to manage, engineer and plan a SAN.
FreeNAS: NAS (Network Attached Storage) server that supports UPS, CIFS/SMB, FTP, NFS, RSYNC, SSH, AFP, Unison, UPnP, Webserver, iSCSI protocols, local and Microsoft AD authentication.
Data Storage Management Suite: A suite of utilities intended to provide the ability to test data integrity and performance, stress, clone, thrash, and view data of a specified file/storage device.
O2 Project: A safe (encrypted) storage and organizer for personal data. It can be an address book, a password manager or what have you!