Open Source Blockchain Software
BitTube
BitTube is a blockchain based video streaming platform using P2P (BitTorrent) directly in the web browser with WebTorrent and Airtime reward system where users earn TUBE cryptocyrrency.
Sia
Sia is a decentralized storage platform secured by blockchain technology. The Sia Storage Platform leverages underutilized hard drive capacity around the world to create a decentralized data storage marketplace that is more reliable and lower cost than traditional cloud storage providers. With Sia you can store files in the decentralized cloud without signup requirements, servers and trusted third-party providers. On average, Sia's decentralized cloud storage costs 90% less than incumbent cloud storage providers. Storing 1TB of files on Sia costs about $1-2 per month, compared with $23 on Amazon S3.
BigchainDB
BigchainDB allows developers and enterprise to deploy blockchain proof-of-concepts, platforms and applications with a blockchain database, supporting a wide range of industries and use cases. BigchainDB provides high throughput, low latency, powerful query functionality, decentralized control, immutable data storage and built-in asset support, BigchainDB is like a database with blockchain characteristics.
Freenet
Freenet is a peer-to-peer platform for censorship-resistant communication and publishing. With the Freenet client you can browse websites, post on forums, and publish files within Freenet network with strong privacy protections.
Minds
Minds is an alternative, blockchain-based social media platform. With Minds you can earn money or cryptocurrency for using the platform and interactive with other people. Tokens can be used to boost posts or crowdfund other users and their cause. Minds was to be a privacy-focused social network that is censorship resistant, and where users can interact without having their personal data harvested.
PlayKey
PlayKey is a decentralized cloud gaming platform. PlayKey is the first of is kind, and makes decentralized cloud gaming profitable for everyone.
Twetch
Twetch is a blockchian-based social network. On Twetch, all interactions are micropayments in the form of Bitcoin BSV and the platform truley revolutionize social media interactions with its micropayments business model that does not include third-party actors taking shares off the payments. All of your content on Twetch is signed by you and stored on the blockchain, forever accessible to you.
Steemit
Steemit is a blockchain-based blogging platform and social media application that rewards its users with the cryptocurrency STEEM for publishing and curating content. On Steemit you can publish blog posts on any topic and get rewarded by doing so. You can also be rewarded by upvoting and curating post that the other users deems noteworthy.