ShareNice - Social Sharing Widget

•    PHP

ShareNice provides an ethical social sharing widget. It helps users to be able to share your web pages with their friends through social networking sites without having to give any information away to money-making third parties. There are two ways you can make use of shareNice, you can choose hosted version or host on your own using the code.

Appsample-Photosharing - Sample code for a UWP photo sharing app.

•    CSharp

PhotoSharingApp is a Universal Windows Platform (UWP) app sample that demonstrates real-world social media experiences around photo sharing.With this app, users can earn virtual gold by uploading and sharing photos with people from all around the world. They can upload photos of their cats, shoes, houses, or last vacations, and see how they compete against other users. Are their photos a great gold source? Are they among the most generous contributors? They can find out on the app's leaderboard.

phimpme-android - Phimp.me - Photo Image Editor App https://phimp.me

•    Java

Phimp.me is a Photo App for Android that aims to replace proprietary photo applications. It offers features such as taking photos, adding filters, editing images and uploading them to social networks. Do you have many different apps on your Android Phone for the purpose of clicking, editing and sharing images? Hey, guess what, now you don't need all of those because Phimp.me is here, with all the features packaged into one. So go and clean your phone memory to save your space for other useful purposes.

Pixelfed - Federated Image Sharing (WIP)

•    PHP

PixelFed is a federated social image sharing platform, similar to Instagram. Federation is done using the ActivityPub protocol, which is used by Mastodon, PeerTube, Pleroma, and more. Through ActivityPub PixelFed can share and interact with these platforms, as well as other instances of PixelFed.

OpenPhoto - A Photo Sharing and Photo Management Application

•    PHP

OpenPhoto works similarly to Flickr, Smugmug and other photo sharing services with one major difference: you retain ownership and give OpenPhoto access to use them. All photos, tags and comments are stored in your personal cloud accounts with companies like Amazon, Rackspace or Google. This means you can easily switch between OpenPhoto services, use more than one at a time or stop using them altogether while retaining all of your photos, tags and comments.

Elgg

•    PHP

A powerful open source social networking platform. It provides the components you need to build a fully-featured social environment, including Profiles, Groups, Activity Streams, Access controls, Blogging / Microblogging, Web Services API etc.

jsSocials - Social Network Sharing Plugin

•    Javascript

jsSocials is a simple social network sharing jQuery plugin. It's flexible and easily extensible. Configure visual appearance. Choose one of several themes provided. Add any yet unsupported social network if needed. You can share via Email, Twitter, Facebook, Google-plus, LinkedIn, WhatsApp, StumbleUpon and lot more.

LovedByLess

•    Ruby

Lovd is a social networking solution that has everything you need to build your community.

ASP.NET Social Controls

•    ASPNET

ASP.NET Social Controls is a small collection of server controls designed to make integrating social sharing utilities such as ShareThis, AddThis and AddToAny easier, more manageable, and X/HTML-compliant, with configuration files and per-instance settings.

Friendica - Facebook alternative

•    PHP

Friendica is a communications platform for integrated social communications utilising decentralised communications and linkage to several indie social projects as well as popular mainstream providers. It provides fully distributed communications protocols ("DFRN" and "Zot!") for securely sharing with your friends across the internet.

social-share-kit - Library of decent and good looking CSS/JavaScript social sharing icons, buttons and popups

•    CSS

Social Share Kit is a library of decent and good looking CSS/JavaScript social sharing icons, buttons and popups. IE8+, Chrome, Firefox, Safari. JavaScript library is standalone and has no 3rd party requirements.

MVC Social Helper

The MVC Social Helper project would enable a developer to easily integrate the AddThis and ShareThis social sharing widget in their MVC 3 projects in the initial release. The AddThis and ShareThis widgets can be easily customized while using the Helper. It is shipped with pred...

ClipBucket - Multimedia Management Script

•    PHP

ClipBucket is an OpenSource Multimedia Management Script Provided Free to the Community.This script comes with all the bells & whistles required to start your own Video Sharing website like Youtube, Metacafe, Veoh, Hulu or any other top video distribution application in matter of minutes. ClipBucket is fastest growing script which was first started as Youtube Clone but now its advance features like Social Networking, Allows users to upload videos, music and photos and lot more.

social-sharing - Add social sharing links and buttons without the bloat.

•    CSS

Add social sharing links and buttons without the bloat. Compiled and production-ready code can be found in the dist directory. The src directory contains development code.

hubzilla - build community websites that can interact with one another

•    PHP

Hubzilla is a general purpose communication server integrated with a web publishing system and a decentralised permission system. If this sounds like a bunch of technical mumbo-jumbo to you, just think of it as an independent platform for sharing stuff online (publicly or privately). Hubzilla contains some social network bits, some cloud storage bits, some blog and forum bits, and some content management bits. These are all integrated within a common privacy framework - and it is all decentralised.

friendlypix - FriendlyPix is a cross-platform Firebase example app

Friendly Pix is a sample app demonstrating how a photo sharing social network can be built using the Firebase Platform.Have a look at the Web, Android or iOS app for more details.

angular-socialshare - Angular social share module, share urls and content on social networks such as facebook, google+, twitter, pinterest and more

•    HTML

Angular Socialshare is an angularjs directive for sharing urls and content on social networks such as (facebook, google+, twitter, pinterest and so on). The Angular Socialshare is developed by 720kb.

DesArt Photo Manager

•    CSharp

DesArt Photo Manager is a photo manager with extensions for photo acquisition and photo sharing, archiving and much more. Its plugin architecture means there are no limits to what it can do.

BluePic - BluePic is a sample photo sharing application for iOS that shows you how to connect your mobile application with Kitura, Bluemix services, and OpenWhisk actions

•    Swift

Read this in other languages: 한국어, Português,中国. BluePic is a photo and image sharing sample application that allows you to take photos and share them with other BluePic users. This sample application demonstrates how to leverage, in a mobile iOS 10 application, a Kitura-based server application written in Swift.

hybridauth - Open source social sign on PHP Library

•    PHP

Hybridauth enables developers to easily build social applications and tools to engage websites visitors and customers on a social level that starts off with social sign-in and extends to social sharing, users profiles, friends lists, activities streams, status updates and more. The main goal of Hybridauth is to act as an abstract API between your application and the various social networks APIs and identities providers such as Facebook, Twitter and Google.