Showing 32 open source projects for "java open source"

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  • 1
    Hardhat

    Hardhat

    Hardhat is a development environment to compile, deploy, test

    Hardhat is an Ethereum development environment for professionals. It facilitates performing frequent tasks, such as running tests, automatically checking code for mistakes or interacting with a smart contract. Check out the plugin list to use it with your existing tools. Hardhat Runner is the main component you interact with when using Hardhat. It's a flexible and extensible task runner that helps you manage and automate the recurring tasks inherent to developing smart contracts and dApps....
    Downloads: 31 This Week
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  • 2
    Chainlink

    Chainlink

    node of the decentralized oracle network

    Securely connect smart contracts with off-chain data and services. Chainlink decentralized oracle networks provide tamper-proof inputs, outputs, and computations to support advanced smart contracts on any blockchain. Start building your hybrid smart contract with Chainlink. Use decentralization, trusted nodes, premium data, and cryptographic proofs to connect highly accurate and available data/APIs to any smart contract. Build on a flexible framework that can retrieve data from any API,...
    Downloads: 19 This Week
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  • 3
    Solidity

    Solidity

    The Smart Contract Programming Language

    Solidity is a statically-typed curly-braces programming language designed for developing smart contracts that run on Ethereum. Solidity 0.8.4 adds custom structured errors, allows more flexible configuration of the SMTChecker and fixes a bug in the Solidity ABI decoder v2. Read more about the bug here. With v0.8.4, errors can be defined inside and outside of contracts (including interfaces and libraries). This provides a convenient and gas-efficient way to explain to users why an operation...
    Downloads: 18 This Week
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  • 4
    OpenZeppelin Contracts

    OpenZeppelin Contracts

    OpenZeppelin Contracts is a library for secure smart contracts

    A library for secure smart contract development. Build on a solid foundation of community-vetted code. OpenZeppelin Contracts uses semantic versioning to communicate backward compatibility of its API and storage layout. To keep your system secure, you should always use the installed code as-is, and neither copy-paste it from online sources nor modify it yourself. The library is designed so that only the contracts and functions you use are deployed, so you don't need to worry about it...
    Downloads: 6 This Week
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    Nonprofit Budgeting Software

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  • 5
    Echidna

    Echidna

    Ethereum smart contract fuzzer

    Echidna is a weird creature that eats bugs and is highly electrosensitive (with apologies to Jacob Stanley) More seriously, Echidna is a Haskell program designed for fuzzing/property-based testing of Ethereum smarts contracts. It uses sophisticated grammar-based fuzzing campaigns based on a contract ABI to falsify user-defined predicates or Solidity assertions. We designed Echidna with modularity in mind, so it can be easily extended to include new mutations or test specific contracts in...
    Downloads: 3 This Week
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  • 6
    Aiken

    Aiken

    A modern smart contract platform for Cardano

    A modern smart contract platform for Cardano.
    Downloads: 1 This Week
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  • 7
    Nethereum

    Nethereum

    Ethereum .Net cross platform integration library

    Nethereum is the .Net integration library for Ethereum, simplifying the access and smart contract interaction with Ethereum nodes both public or permission like Geth, Parity or Quorum. Nethereum is developed targeting netstandard 1.1, netstandard 2.0, netcore 2.1, netcore 3.1, net451 and also as a portable library, hence it is compatible with all the operating systems (Windows, Linux, MacOS, Android, and OSX) and has been tested on cloud, mobile, desktop, Xbox, hololens and windows IoT....
    Downloads: 2 This Week
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  • 8
    Remix Project

    Remix Project

    Compiler and IDE that enables users to build Ethereum contracts

    Remix Project is a rich toolset including Remix IDE, a comprehensive smart contract development tool. The Remix Project also includes Remix Plugin Engine and Remix Libraries which are low-level tools for wider use. Remix IDE is used for the entire journey of contract development by users of any knowledge level. It fosters a fast development cycle and has a rich set of plugins with intuitive GUIs. The IDE comes in 2 flavors and a VSCode extension. Supported browsers: Firefox v100.0.1 &...
    Downloads: 2 This Week
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  • 9
    vyper

    vyper

    Pythonic Smart Contract Language for the EVM

    See Installing Vyper to install vyper. See Tools and Resources for an additional list of framework and tools with vyper support. See Documentation for the documentation and overall design goals of the Vyper language. See Learn.Vyperlang.org for learning Vyper by building a Pokémon game. See try.vyperlang.org to use Vyper in a hosted jupyter environment! There is also an online compiler available you can use to experiment with the language and compile to bytecode and/or IR. While the vyper...
    Downloads: 1 This Week
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    Rent Manager Software

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  • 10
    BlockScout

    BlockScout

    Blockchain explorer for Ethereum based network

    ...Currently available full-featured block explorers (Etherscan, Etherchain, Blockchair) are closed systems which are not independently verifiable. As Ethereum sidechains continue to proliferate in both private and public settings, transparent, open-source tools are needed to analyze and validate transactions.
    Downloads: 0 This Week
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  • 11
    Aeternity node

    Aeternity node

    Scalable blockchain for the people, smart contracts, state channels

    ...With numerous innovative functionalities and performance far ahead of earlier blockchains, æternity allows its users and community to seamlessly venture into the new era of society, economy, and digital interactions. The æternity blockchain project was born out of a desire for a more fair Internet supported by scalable, open-source and cryptographic software, with a commitment to technical excellence. æternity blockchain itself launched as the public æternity mainnet in 2018. It is now a blossoming community of enthusiasts supported via the æternity crypto foundation. At its core, æternity is a blockchain protocol and a smart contract platform that goes beyond what traditional blockchains do. ...
    Downloads: 0 This Week
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  • 12
    Plutus

    Plutus

    The Plutus language implementation and tools

    Plutus is the smart contract development framework for the Cardano blockchain, created using Haskell. It provides the core infrastructure for writing, testing, and deploying secure, deterministic smart contracts on the Cardano platform. Plutus includes a custom functional language (Plutus Core), a higher-level embedded DSL (Plutus Tx) for writing contracts in Haskell, and an off-chain infrastructure for managing interactions. It ensures strong correctness guarantees through formal...
    Downloads: 0 This Week
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  • 13
    Mythril

    Mythril

    Security analysis tool for EVM bytecode. Supports smart contracts

    Mythril is a security analysis tool for EVM bytecode. It detects security vulnerabilities in smart contracts built for Ethereum, Hedera, Quorum, Vechain, Roostock, Tron and other EVM-compatible blockchains. It uses symbolic execution, SMT solving and taint analysis to detect a variety of security vulnerabilities. It's also used (in combination with other tools and techniques) in the MythX security analysis platform. If you are a smart contract developer, we recommend using MythX tools which...
    Downloads: 0 This Week
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  • 14
    Cy

    Cy

    Hackers terminal browser of Cyber blockchains

    Cy - a nushell wrapper, a client for the Cyber family blockchains (bostrom, pussy) and IPFS. Bostrom is the name of the consensus computer that maintains a general-purpose, permissionless informational graph where nodes are CIDs of files in the IPFS network, and edges are Cyberlinks (consisting of source, destination, author, height - records) written into the blockchain. The information written into the blockchain is secured to remain in existence as long as the blockchain is operative. The...
    Downloads: 0 This Week
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  • 15
    uAgents

    uAgents

    A fast and lightweight framework for creating decentralized agents

    uAgents is a library developed by Fetch.ai that allows for creating autonomous AI agents in Python. With simple and expressive decorators, you can have an agent that performs various tasks on a schedule or takes action on various events.
    Downloads: 0 This Week
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  • 16
    ZoKrates

    ZoKrates

    A toolbox for zkSNARKs on Ethereum

    ZoKrates is a toolbox for zkSNARKs on Ethereum. It helps you use verifiable computation in your DApp, from the specification of your program in a high-level language to generating proofs of computation to verifying those proofs in Solidity. Zero-knowledge proofs (ZKPs) are a family of probabilistic protocols, first described by Goldwasser, Micali and Rackoff in 1985. One particular family of ZKPs is described as zero-knowledge Succinct Non-interactive ARguments of Knowledge, a.k.a. zkSNARKs....
    Downloads: 13 This Week
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  • 17
    TypeChain

    TypeChain

    TypeScript bindings for Ethereum smart contracts

    TypeChain generates only TypeScript typings (d.ts) files, if you're looking for "opinionated", "batteries included" solution check out our new project: eth-sdk. It generates typesafe, ready to use ethers.js wrappers and uses etherscan/sourcify to automatically get ABIs based only on smart contract addresses. Under the hood, eth-sdk relies on TypeChain. Interacting with blockchain in Javascript is a pain. Developers need to remember not only a name of a given smart contract method or event...
    Downloads: 0 This Week
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  • 18
    Truffle

    Truffle

    A tool for developing smart contracts. Crafted with the finest cacaos.

    The most comprehensive suite of tools for smart contract development. Quickly build, test, debug, and deploy using the Truffle CLI. Write scripts and plugins to automate common processes. Interact directly with the blockchain using the Truffle console. Write tests in Solidity, JavaScript, and TypeScript. Truffle will manage your entire workflow. Get a deeper understanding of transactions with the Truffle debugger. Step in/out, set breakpoints, and analyze variables through the CLI and the...
    Downloads: 1 This Week
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  • 19
    Awesome Algorand

    Awesome Algorand

    Curated list of awesome resources related to the Ⱥlgorand Blockchain

    A curated list of awesome resources related to the Algorand Blockchain. Algorand is an open-source, proof-of-stake blockchain and smart contract computing platform. You can enhance your experience by interacting with the AI chatbot available at AwesomeAlgo Search. It's designed to answer any questions you might have regarding resources in this repository.
    Downloads: 0 This Week
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  • 20
    web4

    web4

    Web4 is a new way to distribute decentralized apps

    Web4 is a new way to distribute decentralized apps. Deploy a single WASM smart contract to deploy the whole web app. You only need to deploy a single smart contract using WebAssembly to host your app's HTTP backend, static resources, and blockchain logic. There is an HTTP gateway to NEAR blockchain which allows smart contract to handle arbitrary GET requests. Every smart contract on NEAR also gets a corresponding API endpoint which can be accessed through regular HTTP requests. You can load...
    Downloads: 0 This Week
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  • 21
    Protocol Labs - Retriev

    Protocol Labs - Retriev

    Home of Retriev protocol (by CryptoNet + YOMI)

    Retriev is a Protocol designed by CryptoNetLab and developed by YOMI that allows end users to create retrieval deals with a subset of IPFS providers. It leverages a reliable system of “missed retrieval” penalties that increases confidence in decentralized storage networks. If you want to go deeper on how the protocol works please read our light paper.
    Downloads: 0 This Week
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  • 22
    solgraph

    solgraph

    Visualize Solidity control flow for smart contract security analysis

    Visualize Solidity control flow for smart contract security analysis. Generates a DOT graph that visualizes the function control flow of a Solidity contract and highlights potential security vulnerabilities. A nice example of piping contract source that is in your clipboard through solgraph, dot, and preview: (Use whatever image previewer is available on your system; Preview.app is available on Mac) You have to have graphviz installed (brew install graphviz) to render the DOT file as an...
    Downloads: 0 This Week
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  • 23
    Devault

    Devault

    Decentralized alternative to proprietary and centralized cloud storage

    A Blockchain-based, self-hosted, and end-to-end encrypted cloud storage. Devault is a decentralized, self-hosted, and end-to-end encrypted alternative to proprietary and centralized cloud storage. The file gets encrypted using AES-256-CBC encryption. The encrypted file is split into pieces. The chunks are distributed across the network nodes. The root hash will be stored in your wallet on the blockchain.
    Downloads: 1 This Week
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  • 24
    Smart Contract Sanctuary

    Smart Contract Sanctuary

    A home for ethereum smart contracts

    ...Contains smart contract sources for various networks, grouped by the first two chars of the contract address. A scriptable semantic grep utility for solidity (crunch numbers, find specific contracts, extract data) Semgrep is a fast, open-source, static analysis tool for finding bugs and enforcing code standards at editor, commit, and CI time, and now supports Solidity! A powerful online code search service that can be used to search the sanctuary without cloning.
    Downloads: 2 This Week
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  • 25
    Dapp tools by DappHub

    Dapp tools by DappHub

    Dapp, Seth, Hevm, and more

    Command line tools and smart contract libraries for Ethereum smart contract development. All you need Ethereum development tool. Build, test, fuzz, formally verify, debug & deploy solidity contracts. Ethereum CLI. Query contracts, send transactions, follow logs, slice & dice data. Testing-oriented EVM implementation. Debug, fuzz, or symbolically execute code against local or mainnet state. Sign Ethereum transactions from a local keystore or hardware wallet. dapptools is currently in a stage...
    Downloads: 1 This Week
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