An instant messaging app that provides online text message and video chat services.

Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.

Steam is a digital distribution, digital rights management, multiplayer and communications platform developed by Valve Corporation.

Picasa is a software download from Google, that helps you organize, edit, and share your photos. The local application usage and the online storage up to 1 GB is free, and it is easy to use. The online version is called Picasa Web Albums.

Pidgin is an easy to use, multi-protocol chat client client used by millions. Connect to AIM, MSN, Yahoo, XMPP, and more chat networks all at once.

Spotify is a commercial music streaming service providing digital rights management-restricted content from record labels including Sony, EMI, Warner Music Group and Universal.

WordPress is a state-of-the-art publishing platform with a focus on aesthetics, web standards, and usability. More simply, WordPress is what you use when you want to work with your blogging software, not fight it.

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free. It is like SMS, but more powerful. .

Hangouts is a messaging app that lets you send and receive messages, photos and more, and even start free video and voice calls – one to one or with a group! "Hangouts" are places used to facilitate group video chat (with a...

Calibre is a free and open source e-book library management application made by users, for users. Many languages, designed around the concept of the logical book, i.e.

Twitter is an online social networking service that enables users to send and read short 280-character messages called "tweets". Registered users can read and post tweets, but those who are unregistered can only read them.

Facebook's mission is to give people the power to share and make the world more open and connected.

The Google+ project aims to make sharing on the web more like sharing in real life.

WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS.

Slack brings all your communication together in one place. It's real-time messaging, archiving and search for modern teams.

Shazam gives instant satisfaction for when you want to know the name of that song playing on the radio.

FreezeCrowd is a social network that connects people in group photos. The motto is to break the ice and connect with your friends through the photos.

OpenVPN is a full-featured open source SSL VPN solution that accommodates a wide range of configurations, including remote access, site-to-site VPNs, Wi-Fi security, and enterprise-scale remote access solutions with load balancing...

All-in-one voice, video and text chat for gamers that’s free, secure, and works on both your desktop and phone.

Content-Management Framework (CMF), Content Management System (CMS), Community and Blog software.

SoundCloud lets you share music fast & easily. The platform takes the daily hassle out of receiving, sending & distributing music for artists, record labels & other music professionals.

Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.

Online social photo and short video sharing community. Flickr helps you organize that huge mass of photos you have and offers a way for you, your friends and family to tell stories about them.

TextSecure and RedPhone have been merged to create Signal! Using Signal, you can communicate instantly while avoiding SMS fees, create groups so that you can chat in real time with all your friends at once, and share media or...

Mumble is an open source, low-latency, high quality voice chat software primarily intended for use while gaming.