Photogram是允许用户上传照片的社交网络。 每个用户都可以注册，上传照片（例如），共享照片，查看最新的用户活动和最新的注册等等。

老牌而且功能相当强大，早在2009年的时候reishi就和一群SE爱好者在用这个程序。

官方功能介绍

官方演示

文章最后由 reishi 在 2015-02-23, 13:41 编辑
编辑原因: 添加官方插件

Social Microblogging PRO Twitter is a script style, designed to share news, events, or simply what you want, through publications of 140 characters, and may refer to other users, create Hashtag and share with other site users. a part of it can upload images, videos from Youtube, DailyMotion, Screenr, DotSub, Hulu (Permitted users only united states ) or Vimeo. Follow other users, send direct messages. and other features that will be described below.

文章最后由 reishi 在 2015-09-14, 23:45 编辑
编辑原因: 增加安装方法

crea8SOCIAL is a social networking platform that sums features of common social networking platforms like facebook and twitter and to that indigenous to it such as the feature that allows it to display information(to the user) about any link added,profile can be redeesigned by users, communities created and invite others to join amongst many other interesting features
更新发布，之前发布的版本是3.0，当前是3.1.1

未测试

SocialStrap is a great tool for anyone looking to build a new social media website. The community of webmasters is strong, and there are a lot of great new addons, mods and guides that allow anyone to have great customization to their SocialStrap site. I have tried many different engines, and this one is the most comprehensive and the most supportive out there.

一款英文的SNS社交源码，包含小组 话题 等功能，支持多语言，看了一下，语言包不是很大，翻译起来还是很容易的。
压缩包包含2个收费插件和30+免费插件！有需要的可以看看。