Social Source Commons

Hosted community blogging service.

Social networking for non-social purposes with a focus on professional development, networking for jobs and problem solving through the expertise of those in your extended network.

Upcoming.org is a social event calendar, completely driven by people like you. Manage your events, share events with friends and family, and syndicate your calendar to your own site.

Open source software to create an activist network that includes people, groups, events, resources, and more. Ultimately the software creates a network of sites sharing activist data using a central database, and syndicated using web services. Any website can access the data (except one or two private things) using web services (SOAP).

Developers site: www.activismnetwork.org/developers

GoLightly builds thriving online communities to strengthen your organization. Our social networking tools give your members the ability to interact with you and each other in powerful new ways.

MySpace is an online community that lets you meet your friends' friends.

MySpace Profile Creator

Layouts, Graphics, & Generators for MySpace, Piczo, or Xanga

A community of online diaries and journals.

On-line Calendar

dotCommunity is a powerful web-based application suite for the development of online communities.

Bookmarking site similar to del.icio.us

Social Bookmarking & Tagging for the Enterprise

Social networking and bookmarking site.

Netvouz is a social bookmark manager where you can store your favorite links online and access them from any computer.

Bookmarking website for personal use

Social Bookmarking website

Spanish-language digg clone on tech

Online professionalnetworking service.

Change.org is a social network for hundreds of social causes and over 1 million nonprofit organizations. Good petition support and an excellent place to build up organizational mailing lists.

A network of people, nonprofits, and foundations

Open Source Social Networking Platform

Social networking site for video, photos, and audio.

IPTraf is a console-based network statistics utility for Linux. It gathers a variety of figures such as TCP connection packet and byte counts, interface statistics and activity indicators, TCP/UDP traffic breakdowns, and LAN station packet and byte counts.

Nmap ("Network Mapper") is a free open source utility for network exploration or security auditing. It was designed to rapidly scan large networks, although it works fine against single hosts.

Wiki repository of other wiki pages.

Social network platform for nonprofits and nonprofit workers.

Ipoki is a GPS-based social network.
Ipoki lets you connect with others to share geolocation information.

Location-based social-networking site.

Bonjour, also known as zero-configuration networking, enables automatic discovery of computers, devices, and services on IP networks.

Group message broadcasting for Twitter. Send private messages to specific groups of friends.

A hosted service that finds other Twitter users that might interest you based on shared Tweet topics.

Track uptime, latency, webserver & host information, ip address changes.

Website to connect nonprofits with volunteers and donors.

Genwi combines aspects of RSS feed readers and updates from social sites like Twitter to create a single place to get updated on news you're interested in.

We rank 5500+ companies on 25 aspects of reputation.

Identi.ca is a microblogging service brought to you by Control Yourself, Inc.. It runs the Laconica microblogging software, version 0.7.3, available under the GNU Affero General Public License.

FMYI [For MY Innovation] is an online workspace you can use to bring your team together to store and share information securely with each other.

ammado connects nonprofits, socially responsible companies and engaged individuals in a unique environment of shared interests and supplies the tools necessary to support online campaigning, fundraising, engagement and communication.

Integrated online CRM suite including Online Marketing, Event Management, Online Donations, Personalized Fundraisers, Online Auctions, Social Networking, and Web Content Management.