lbry-sdk - The LBRY SDK for building decentralized, censorship resistant, monetized, digital content apps

•    Python

LBRY is a decentralized peer-to-peer protocol for publishing and accessing digital content. It utilizes the LBRY blockchain as a global namespace and database of digital content. Blockchain entries contain searchable content metadata, identities, rights and access rules. LBRY also provides a data network that consists of peers (seeders) uploading and downloading data from other peers, possibly in exchange for payments, as well as a distributed hash table used by peers to discover other peers. Our releases page contains pre-built binaries of the latest release, pre-releases, and past releases for macOS, Debian-based Linux, and Windows. Automated travis builds are also available for testing.

lbry-desktop - A browser and wallet for LBRY, the decentralized, user-controlled content marketplace

•    Javascript

The LBRY app is a graphical browser for the decentralized content marketplace provided by the LBRY protocol. It is essentially the lbry daemon bundled with a UI using Electron. We provide installers for Windows, macOS (v10.12.4, Sierra, or greater), and Debian-based Linux. See community maintained builds section for alternative Linux installations.

lbry-app - A browser and wallet for LBRY, the decentralized, user-controlled content marketplace.

•    Javascript

This is a graphical browser for the decentralized content marketplace provided by the LBRY protocol. It is essentially the lbry daemon bundled with a UI using Electron.We provide installers for Windows, macOS, and Debian-based Linux.

PeerTube - Decentralized video streaming platform using P2P (BitTorrent) directly in the web browser with WebTorrent.

•    TypeScript

PeerTube is a decentralized video streaming platform using P2P (BitTorrent) directly in the web browser with WebTorrent. It is difficult to build a FOSS video streaming alternatives to YouTube, Dailymotion, Vimeo... with a centralized software. One organization alone cannot have enough money to pay bandwidth and video storage of its server. So there is a need of decentralized network (as Diaspora for example). But it's not enough because one video could become famous and overload the server. It's the reason why P2P protocol is used to limit the server load.

java-tron - Java implementation of the Tron whitepaper

•    Java

TRON is a block chain-based decentralized smart protocol and an application development platform. It allows each user to freely publish, store and own contents and data, and in the decentralized autonomous form, decides an incentive mechanism and enables application developers and content creators through digital asset distribution, circulation and transaction, thus forming a decentralized content entertainment ecosystem.TRON is a product of Web 4.0 and the decentralized internet of next generation.

KadNode - P2P DNS with content key, crypto key and PKI support. DynDNS alternative.

•    C

KadNode is a small and decentralized DNS resolver that can use existing public key infrastructures. It utilizes the BitTorrent P2P network and mbedtls for TLS/crypto support. KadNode can intercept .p2p domain queries on the systems level and resolve them using a decentralized DHT network. TLS authentication can be used to make sure the correct IP address was found. If successful, the IP address is passed to the application making the request.

ZeroNet - ZeroNet - Decentralized websites using Bitcoin crypto and BitTorrent network

•    Python

It downloads the latest version of ZeroNet then starts it automatically.See ArchWiki's ZeroNet article for further assistance.

Steem - The blockchain for Smart Media Tokens (SMTs) and decentralized applications.

•    C++

Steem is a Delegated Proof of Stake blockchain that uses a "Proof of Brain" social consensus algorithm for token allocation. It is a blockchain-based rewards platform for publishers to monetize content and grow community.

peer-tweet - Decentralized feeds using BitTorrent's DHT

•    Javascript

BitTorrent's DHT is probably one of the most resilient and censorship-resistant networks on the internet. PeerTweet uses this network to allow users to broadcast tweets to anyone who is listening. When you start PeerTweet, it generates a hash @33cwte8iwWn7uhtj9MKCs4q5Ax7B which is similar to your Twitter username (ex. @lmatteis). The difference is that you have entire control over what can be posted because only you own the private key associated with such address. Furthermore, thanks to the DHT, what you post cannot be stopped by any government or institution. Once you find other PeerTweet addresses you trust (and are not spam), you can follow them. This configures your client to store this user's tweets and broadcasts them to the DHT every once in a while to keep their feed alive. This cooperation of following accounts, allows for feeds to stay alive in the DHT network. The PeerTweet protocol also publishes your actions such as I just followed @919c.. or I just liked @9139.. and I just retweeted @5789... This allows the possibility for new users to find other addresses they can trust; if I trust the user @6749.. and they're following @9801.., then perhaps I can mark @9801.. as not spam. This idea of publicly tweeting about your actions also allows for powerful future crawling analysis of this social graph.

Hshare

•    C

The UTXO-based blockchain system (e.g. Bitcoin) and account-based blockchain system (e.g. Ethereum ) opened the door of a brand-new world for us. Despite facing some drawbacks along the way, the impressive success of Bitcoin and Ethereum has certainly proven the value of the blockchain technology and its massive potential in the future. Since 2015, there has been quite a few highly-promising distributed ledger systems which are not block-based blockchain technology turned up, such as DAG (Directed Acyclic Graph). With no doubt, a decentralized digital world is dawning and Bitcoin or Ethereum has the potential to become the fundamental currency in block-based blockchain system. IOTA or Byteball, on the other hand may fulfil a similar role in a system based upon DAG. Although all blockchain issued tokens can be traded on some exchange platform, they can only circulate within their own blockchain systems. We want to create a new decentralized platform, which will be the connecting point of the major blockchain systems, regardless the block-based or blockless-based blockchain system, hence allowing value and information circulate smoothly within different blockchain system. We call it “HyperCash” or Hcash in short. The Hcash is being developed by cryptography labs in one of the China’s most prestigious university as well as other famous universities in Australia. We will periodically update you with the progress on this over time, and we expected the first hardfork upgrade will happen soon at early Sept 2017. Thanks for your attention and stay tuned for the further update from Hcash dev team.

BigchainDB - The Scalable Blockchain Database

•    Python

BigchainDB allows developers and enterprise to deploy blockchain proof-of-concepts, platforms and applications with a scalable blockchain database, supporting a wide range of industries and use cases. It is a decentralization ecosystem: a decentralized database, at scale. It can perform 1 million writes per second throughput, store petabytes of data, and sub-second latency.

bittorrent-dht - 🕸 Simple, robust, BitTorrent DHT implementation

•    Javascript

This module is used by WebTorrent. Also see bittorrent-tracker.

Sia - Your decentralized private cloud

•    Go

Sia is a new decentralized cloud storage platform that radically alters the landscape of cloud storage. By leveraging smart contracts, client-side encryption, and sophisticated redundancy (via Reed-Solomon codes), Sia allows users to safely store their data with hosts that they do not know or trust. The result is a cloud storage marketplace where hosts compete to offer the best service at the lowest price. And since there is no barrier to entry for hosts, anyone with spare storage capacity can join the network and start making money.

The ultimate open source betting protocol. PolyCash is a P2P blockchain platform for wallets, asset issuance, bonds & gaming

•    PHP

PolyCash is the ultimate open source betting solution. The PolyCash web app runs on PHP and MySQL and is easy to install and configure. PolyCash is a colored coins implementation built using blockchain technology and can be used to create betting currencies on top of bitcoin, litecoin or any other blockchain based on the Bitcoin source code.

noise - A decentralized P2P networking stack written in Go.

•    Go

noise is an opinionated, easy-to-use P2P network stack for decentralized applications, and cryptographic protocols written in Go by Perlin Network. noise is made to be robust, developer-friendly, performant, secure, and cross-platform across multitudes of devices by making use of well-tested, production-grade dependencies.

tribler - Privacy enhanced BitTorrent client with P2P content discovery

•    Python

Towards making Bittorrent anonymous and impossible to shut down. The aim of Tribler is giving anonymous access to online (streaming) videos. We are trying to make privacy, strong cryptography and authentication the Internet norm.

hyperledger - Hyperledger Project is a new Collaborative Project at The Linux Foundation

Hyperledger is an open source collaborative effort created to advance cross-industry blockchain technologies. It is a global collaboration including leaders in finance, banking, Internet of Things, supply chains, manufacturing and Technology. The Linux Foundation hosts Hyperledger under the foundation. Not since the Web itself has a technology promised broader and more fundamental revolution than blockchain technology. A blockchain is a peer-to-peer distributed ledger forged by consensus, combined with a system for “smart contracts” and other assistive technologies. Together these can be used to build a new generation of transactional applications that establishes trust, accountability and transparency at their core, while streamlining business processes and legal constraints. Think of it as an operating system for marketplaces, data-sharing networks, micro-currencies, and decentralized digital communities. It has the potential to vastly reduce the cost and complexity of getting things done in the real world. Only an Open Source, collaborative software development approach can ensure the transparency, longevity, interoperability and support required to bring blockchain technologies forward to mainstream commercial adoption. That is what Hyperledger is about – communities of software developers building blockchain frameworks and platforms.

orbit-db - Peer-to-Peer Databases for the Decentralized Web

•    Javascript

OrbitDB is a serverless, distributed, peer-to-peer database. OrbitDB uses IPFS as its data storage and IPFS Pubsub to automatically sync databases with peers. It's an eventually consistent database that uses CRDTs for conflict-free database merges making OrbitDB an excellent choice for decentralized apps (dApps), blockchain applications and offline-first web applications.

Rippled - Decentralized cryptocurrency blockchain daemon implementing the XRP Ledger in C++

•    C++

Ripple is a network of computers which use the Ripple consensus algorithm to atomically settle and record transactions on a secure distributed database, the Ripple Consensus Ledger (RCL). Because of its distributed nature, the RCL offers transaction immutability without a central operator. The RCL contains a built-in currency exchange and its path-finding algorithm finds competitive exchange rates across order books and currency pairs.

Zcash - Internet Money

•    C++

Zcash is an implementation of the "Zerocash" protocol. Based on Bitcoin's code, it intends to offer a far higher standard of privacy through a sophisticated zero-knowledge proving scheme that preserves confidentiality of transaction metadata. Bitcoin and most cryptocurrencies expose your entire payment history to the public. Zcash is the first open, permissionless cryptocurrency that can fully protect the privacy of transactions using zero-knowledge cryptography.