Ethereum is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of downtime, censorship, fraud or third party interference. These apps run on a custom built blockchain, an enormously powerful shared global infrastructure that can move value around and represent the ownership of property. 
 
This enables developers to create markets, store registries of debts or promises, move funds in accordance with instructions given long in the past (like a will or a futures contract) and many other things that have not been invented yet, all without a middle man or counterparty risk.
 
It allows you to hold and secure ether and other crypto-assets built on Ethereum, as well as write, deploy and use smart contracts. It helps you to design your own currency.

Ethereum is a  decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of downtime, censorship, fraud or third party interference. These apps run on a custom built  blockchain, an enormously powerful shared global infrastructure that can move value around and represent the ownership of property. 

Ethereum - Blockchain APP Platform

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.
 
 Sia splits apart, encrypts, and distributes your files across a decentralized network. Since you hold the keys, you own your data. No outside company can access or control your files, unlike traditional cloud storage providers.

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.

Sia - Your decentralized private cloud

Tendermint Core is Byzantine Fault Tolerant (BFT) middleware that takes a state transition machine - written in any programming language - and securely replicates it on many machines.
 
Tendermint is software for securely and consistently replicating an application on many machines. By securely, we mean that Tendermint works even if up to 1/3 of machines fail in arbitrary ways. By consistently, we mean that every non-faulty machine sees the same transaction log and computes the same state. Secure and consistent replication is a fundamental problem in distributed systems; it plays a critical role in the fault tolerance of a broad range of applications, from currencies, to elections, to infrastructure orchestration, and beyond.
 
Tendermint consists of two chief technical components: a blockchain consensus engine and a generic application interface. The consensus engine, called Tendermint Core, ensures that the same transactions are recorded on every machine in the same order. The application interface, called the Application BlockChain Interface (ABCI), enables the transactions to be processed in any programming language. Unlike other blockchain and consensus solutions, which come pre-packaged with built in state machines (like a fancy key-value store, or a quirky scripting language), developers can use Tendermint for BFT state machine replication of applications written in whatever programming language and development environment is right for them.

Tendermint Core is Byzantine Fault Tolerant (BFT) middleware that takes a state transition machine - written in any programming language - and securely replicates it on many machines.

Tendermint - Tendermint Core (BFT Consensus) in Go

A simplified blockchain implementation in Golang

blockchain_go - A simplified blockchain implementation in Golang

The Lightning Network Daemon (lnd) - is a complete implementation of a Lightning Network node and currently deployed on testnet3 - the Bitcoin Test Network. lnd has several pluggable back-end chain services including btcd (a full-node) and neutrino (a new experimental light client). The project's codebase uses the btcsuite set of Bitcoin libraries, and also exports a large set of isolated re-usable Lightning Network related libraries within it. 



lnd - Lightning Network Daemon

btcd is an alternative full node bitcoin implementation written in Go (golang).This project is currently under active development and is in a Beta state. It is extremely stable and has been in production use since October 2013.
 
It properly downloads, validates, and serves the block chain using the exact rules (including consensus bugs) for block acceptance as Bitcoin Core. We have taken great care to avoid btcd causing a fork to the block chain. It includes a full block validation testing framework which contains all of the 'official' block acceptance tests (and some additional ones) that is run on every pull request to help ensure it properly follows consensus. Also, it passes all of the JSON test data in the Bitcoin Core code.
 
One key difference between btcd and Bitcoin Core is that btcd does NOT include wallet functionality and this was a very intentional design decision.This means you can't actually make or receive payments directly with btcd. That functionality is provided by the btcwallet.

btcd is an alternative full node bitcoin implementation written in Go (golang).This project is currently under active development and is in a Beta state. It is extremely stable and has been in production use since October 2013.

btcd - An alternative full node bitcoin implementation written in Go (golang)

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Ethereum - Blockchain APP Platform

Sia - Your decentralized private cloud

Tendermint - Tendermint Core (BFT Consensus) in Go

blockchain_go - A simplified blockchain implementation in Golang

lnd - Lightning Network Daemon

btcd - An alternative full node bitcoin implementation written in Go (golang)

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Projects

Ethereum - Blockchain APP Platform

Sia - Your decentralized private cloud

Tendermint - Tendermint Core (BFT Consensus) in Go

blockchain_go - A simplified blockchain implementation in Golang

lnd - Lightning Network Daemon

btcd - An alternative full node bitcoin implementation written in Go (golang)

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