ColdCast is described as 'social platform very similar to Facebook, but with zero corporate interference. We believe that social networking should be an open and fun experience where you are be free to be yourself, not locked down and censored by a select few' and is an app in the Social & Communications category. There are more than 100 alternatives to ColdCast for a variety of platforms, including Online / Web-based, Android, iPhone, iPad and Android Tablet. The best alternative is Mastodon, which is both free and Open Source. Other great apps like ColdCast are Twitter (Free), Diaspora (Free, Open Source), Facebook (Free) and Minds (Freemium, Open Source).
VK (originally VKontakte) is a largest social network service from Europe. Available in many languages and highly popular particularly among Russian-speaking users around the world, especially in Russia, Ukraine, Kazakhstan, Moldova, Belarus, and Israel.
Hubzilla is a powerful platform for creating interconnected based websites featuring a decentralised identity, communications, and permissions framework built using common webserver technology. Hubzilla is very suitable for communities (of any size).
Known is a simple platform for publishing words, pictures, podcasts and more to a site that you control. Choose to share it on social networks like Twitter and Facebook, or extend it to integrate with the software you already use.
Ello is a simple, beautiful, ad-free social network created by a small group of artists and designers. We originally built Ello as a private social network. Over time, so many people wanted to join Ello that we built a public version of Ello for everyone to use.
Okuna (formerly Openbook) is an open-source, zero tracking, zero spying, zero advertisement, secure social network that gives 30% of it's revenue towards making the world a better place, now and forever.