• blockchaindev/solidity-parser - A solidity language parser in Java.
• ConsenSys/solidity-parser - Solidity Parser in Javascript.
• dapp-proof-of-identity
• androlo/solidity-workshop - Educational material for Solidity. Complement to solidity.readthedocs.com.
• Arachnid/solidity-stringutils - Basic string utilities for Solidity.
• blockchaindev/smart-contract-patterns - Smart-Contract Patterns written in Solidity, collated for community good.
• nexusdev/feedbase - Simple data access pattern for dumb, durable software objects ("I thought I needed Oraclize").
• DigixDAO - A proof-of-asset protocol that utilizes Ethereum and IPFS to track an asset's existence without a centralized database. [:page_facing_up:](https://dgx.io/whitepaper.pdf "White Paper")
• Numeraire - An [ERC20](https://github.com/ethereum/EIPs/issues/20) token used for staking in Numerai's machine learning tournament to solve the stock market. [:closed_lock_with_key:](https://github.com/numerai/contract/blob/master/security_audit.pdf "Security Audit") [:page_facing_up:](https://numer.ai/whitepaper.pdf "White Paper")
• Slock.it - DAO and Universal Sharing Network (USN) to rent, sell, and share objects on-demand without middlemen. [:page_facing_up:](https://download.slock.it/public/DAO/WhitePaper.pdf "White Paper")
• ConsenSys/MultiSigWallet - Allows multiple parties to agree on transactions before execution.
• ConsenSys/StandardBounties - A set of standard contracts to be used as interfaces for any kind of bounty, either qualitative or quantitative in nature.
• ConsenSys/Tokens - Solidity smart contract code to issue simple, standards-compliant tokens on Ethereum. It can be used to create any form of asset, currency, coin, hours, usage tokens, vunk, etc.
• OpenZeppelin - A framework to build secure smart contracts on Ethereum. [:closed_lock_with_key:](https://github.com/OpenZeppelin/zeppelin-solidity/tree/master/audit "Security Audits")
• 0x - An open protocol that facilitates trustless, low friction exchange of Ethereum-based assets. [:page_facing_up:](https://0xproject.com/pdfs/0x_white_paper.pdf "White Paper")
• ChronoBank - A [time-based exchange system](https://en.wikipedia.org/wiki/Time-based_currency) built around a concept called Labor-Hour (LH) Tokens. [:closed_lock_with_key:](https://dapphub.github.io/chronobank-review/ "Security Audit") [:page_facing_up:](https://chronobank.io/files/whitepaper.pdf "White Paper")
• MakerDAO - [:closed_lock_with_key:](https://github.com/makerdao/audit-2/blob/master/makerdao_audit_aug_2016_public.pdf "Security Audit") [:page_facing_up:](https://github.com/makerdao/docs/blob/master/Dai.md "White Paper")
• Solidity Standard Library - A proof-of-concept standard library that is included with Solidity itself.
• Oraclize-Tutorial
• docker-eth-dev - docker ethereum dev env
• oraclize-keybase
• androlo/standard-contracts - Storage repo for Solidity contracts, tests, and docs.
• axic/density - Density is a library or collection of useful modifiers and methods for Solidity.
• chriseth/solidity-examples - Solidity Examples by Dr. Christian Reitweisner (Lead C++ Ethereum Developer).
• giblfiz/solidity - This is a collection of public solidity contracts.
• pipermerriam/ethereum-string-utils - String utility functions for ethereum contracts.
• OpenZeppelin - A framework to build secure smart contracts on Ethereum. [:closed_lock_with_key:](https://github.com/OpenZeppelin/zeppelin-solidity/tree/master/audit "Security Audits")

Audits

• slockit/DAO - The Standard DAO Framework, inc. Whitepaper.
• Zeppelin Solutions Serpent Audit - An Audit of the Serpent Compiler
• zigguratt/lll-resurrected - An LLL-based smart contract function dispatcher and example contract.
• ethereum/dapp-bin - A place for all the ÐApps to live.

Audits

• dominicwilliams/instant-dapp-ide - Complete Dapp and Solidity development environment as docker image you can run from command line.
• Solidity Browser - Solidity realtime compiler and runtime.
• raineorshine/solidity-repl - Ethereum Solidity REPL.
• duaraghav8/Solium - A customizable, stand-alone linter for Ethereum Solidity.
• raineorshine/solgraph - Visualize Solidity control flow for smart contract security analysis.
• nexusdev/seth - Perform Ethereum JSON-RPC calls from the comfort of your command line.