10 Best JavaScript Ethereum Smart Contract Libraries
List hand-picked by Openbase ExpertsLearn More
List hand-picked by Openbase Experts
hardhat
Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software. Get Solidity stack traces & console.log.
License: Unknown
TypeScript Definitions: Built-In
User Rating
4.5/ 5
2Top Feedback
N/A
GitHub Stars
2K
Weekly Downloads
68K
Last Commit
1mo ago
@ethereum-waffle/ens
Library for writing and testing smart contracts.
License: MIT
TypeScript Definitions: Built-In
User Rating
5.0/ 5
1Top Feedback
N/A
GitHub Stars
657
Weekly Downloads
49K
Last Commit
4mos ago
hardhat-contract-sizer
Output Solidity contract sizes with Hardhat 📐
License: MIT
TypeScript Definitions: Built-In
User Rating
5.0/ 5
1Top Feedback
N/A
GitHub Stars
21
Weekly Downloads
10K
Last Commit
4mos ago
ethereum-input-data-decoder
Ethereum smart contract transaction input data decoder
License: MIT
TypeScript Definitions: Built-In
User Rating
5.0/ 5
1Top Feedback
1Great Documentation
1Easy to Use
1Performant
GitHub Stars
334
Weekly Downloads
2K
Last Commit
4mos ago
@truffle/codec
A tool for developing smart contracts. Crafted with the finest cacaos.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
12K
Weekly Downloads
63K
Last Commit
1mo ago
@nomiclabs/hardhat-ethers
Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software. Get Solidity stack traces & console.log.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
2K
Weekly Downloads
47K
Last Commit
1mo ago
@nomiclabs/hardhat-waffle
Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software. Get Solidity stack traces & console.log.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
2K
Weekly Downloads
39K
Last Commit
1mo ago
@truffle/db
A tool for developing smart contracts. Crafted with the finest cacaos.
License: MIT
TypeScript Definitions: Not Found
User RatingN/A
Top Feedback
N/A
GitHub Stars
12K
Weekly Downloads
31K
Last Commit
1mo ago
@nomiclabs/hardhat-etherscan
Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software. Get Solidity stack traces & console.log.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
2K
Weekly Downloads
25K
Last Commit
1mo ago
@nomiclabs/hardhat-web3
Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software. Get Solidity stack traces & console.log.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
2K
Weekly Downloads
8K
Last Commit
1mo ago
@nomiclabs/hardhat-truffle5
Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software. Get Solidity stack traces & console.log.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
2K
Weekly Downloads
7K
Last Commit
1mo ago
@openzeppelin/contracts
OpenZeppelin Contracts is a library for secure smart contract development.
License: MIT
TypeScript Definitions: Not Found
User RatingN/A
Top Feedback
N/A
GitHub Stars
15K
Weekly Downloads
102K
Last Commit
1mo ago
@eth-optimism/contracts
The Optimism monorepo
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
823
Weekly Downloads
4K
Last Commit
2mos ago
@nomiclabs/buidler
Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software. Get Solidity stack traces & console.log.
License: Unknown
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
2K
Weekly Downloads
2K
Last Commit
1mo ago
@keep-network/keep-core
The smart contracts and reference client behind the Keep network
License: MIT
TypeScript Definitions: Not Found
User RatingN/A
Top Feedback
N/A
GitHub Stars
85
Weekly Downloads
951
Last Commit
1mo ago
web3-eth-contract
Ethereum JavaScript API
License: LGPL-3.0
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
13K
Weekly Downloads
358K
Last Commit
1mo ago
web3-eth
Ethereum JavaScript API
License: LGPL-3.0
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
13K
Weekly Downloads
346K
Last Commit
1mo ago
@truffle/external-compile
A tool for developing smart contracts. Crafted with the finest cacaos.
License: MIT
TypeScript Definitions: Not Found
User RatingN/A
Top Feedback
N/A
GitHub Stars
12K
Weekly Downloads
876
Last Commit
1mo ago
@nomiclabs/buidler-web3
Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software. Get Solidity stack traces & console.log.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
2K
Weekly Downloads
553
Last Commit
1mo ago
hardhat-deploy
hardhat deployment plugin
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
370
Weekly Downloads
21K
Last Commit
1mo ago
@nomiclabs/buidler-ethers
Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software. Get Solidity stack traces & console.log.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
2K
Weekly Downloads
368
Last Commit
1mo ago
@nomiclabs/buidler-waffle
Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software. Get Solidity stack traces & console.log.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
2K
Weekly Downloads
353
Last Commit
1mo ago
@openzeppelin/contracts-upgradeable
Upgradeable variant of OpenZeppelin Contracts, meant for use in upgradeable contracts.
License: MIT
TypeScript Definitions: Not Found
User RatingN/A
Top Feedback
N/A
GitHub Stars
352
Weekly Downloads
19K
Last Commit
1mo ago
synthetix
Synthetix Solidity smart contracts
License: MIT
TypeScript Definitions: DefinitelyTyped
User RatingN/A
Top Feedback
N/A
GitHub Stars
670
Weekly Downloads
3K
Last Commit
2mos ago
@nomiclabs/buidler-etherscan
Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software. Get Solidity stack traces & console.log.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
2K
Weekly Downloads
148
Last Commit
1mo ago
@ethereum-waffle/provider
Library for writing and testing smart contracts.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
657
Weekly Downloads
50K
Last Commit
4mos ago
@ethereum-waffle/mock-contract
Library for writing and testing smart contracts.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
657
Weekly Downloads
48K
Last Commit
4mos ago
@ethereum-waffle/chai
Library for writing and testing smart contracts.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
657
Weekly Downloads
47K
Last Commit
4mos ago
ethereum-waffle
Library for writing and testing smart contracts.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
657
Weekly Downloads
45K
Last Commit
4mos ago
@ethereum-waffle/compiler
Library for writing and testing smart contracts.
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
657
Weekly Downloads
44K
Last Commit
4mos ago
@0x/contract-wrappers
Wrappers for 0x smart contract wrappers generated using @0x/abi-gen
License: Apache-2.0
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
101
Weekly Downloads
3K
Last Commit
1mo ago
@openzeppelin/contracts-ethereum-package
OpenZeppelin Contracts is a library for secure smart contract development.
License: MIT
TypeScript Definitions: Not Found
User RatingN/A
Top Feedback
N/A
GitHub Stars
15K
Weekly Downloads
2K
Last Commit
1mo ago
eth-crypto
Cryptographic javascript-functions for ethereum and tutorials to use them with web3js and solidity
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
594
Weekly Downloads
7K
Last Commit
1mo ago
@uma/contracts-node
UMA Protocol Running on Ethereum
License: AGPL-3.0-or-later
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
253
Weekly Downloads
187
Last Commit
1mo ago
@0x/contracts-utils
Smart contract utils of 0x protocol
License: Apache-2.0
TypeScript Definitions: Not Found
User RatingN/A
Top Feedback
N/A
GitHub Stars
101
Weekly Downloads
804
Last Commit
1mo ago
opensea-js
JavaScript SDK for the OpenSea marketplace. Let your users buy or sell cryptogoods on your own site!
License: MIT
TypeScript Definitions: DefinitelyTyped
User RatingN/A
Top Feedback
N/A
GitHub Stars
1K
Weekly Downloads
6K
Last Commit
1mo ago
prb-math
Smart contract library for advanced fixed-point math
License: Unlicense
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
169
Weekly Downloads
760
Last Commit
23d ago
@synthetixio/contracts-interface
Standard JS conventions and utilities for working with Synthetix
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
6
Weekly Downloads
202
Last Commit
1mo ago
@0x/contracts-exchange
Smart contract components of 0x protocol
License: Apache-2.0
TypeScript Definitions: Not Found
User RatingN/A
Top Feedback
N/A
GitHub Stars
101
Weekly Downloads
441
Last Commit
1mo ago
hardhat-abi-exporter
🧰 Export Solidity contract ABIs on compilation ⚙️
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
14
Weekly Downloads
6K
Last Commit
25d ago
@requestnetwork/smart-contracts
A JavaScript library for interacting with the Request Network protocol
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
329
Weekly Downloads
449
Last Commit
2mos ago
@enzymefinance/protocol
Enzyme Protocol Implementation
License: GPL-3.0
TypeScript Definitions: Not Found
User RatingN/A
Top Feedback
N/A
GitHub Stars
282
Weekly Downloads
240
Last Commit
2mos ago
@hifi/protocol
Monorepo implementing the Hifi fixed-rate, fixed-term lending protocol
License: LGPL-3.0-or-later
TypeScript Definitions: Not Found
User RatingN/A
Top Feedback
N/A
GitHub Stars
42
Weekly Downloads
54
Last Commit
1mo ago
hardhat-deploy-ethers
Hardhat plugin for ethers that plays well with hardhat-deploy
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
16
Weekly Downloads
14K
Last Commit
4mos ago
tribute-contracts
A new modular DAO framework, inspired by the Moloch smart contracts
License: ISC
TypeScript Definitions: DefinitelyTyped
User RatingN/A
Top Feedback
N/A
GitHub Stars
142
Weekly Downloads
120
Last Commit
1mo ago
@openzeppelin/test-helpers
Assertion library for Ethereum smart contract testing
License: MIT
TypeScript Definitions: Not Found
User RatingN/A
Top Feedback
N/A
GitHub Stars
287
Weekly Downloads
16K
Last Commit
3mos ago
@tenderly/hardhat-tenderly
Tenderly plugin for HardHat
License: Unknown
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
30
Weekly Downloads
6K
Last Commit
2mos ago
@reality.eth/contracts
Monorepo containing reality.eth contracts, UI code and everything else.
License: GPL-3.0
TypeScript Definitions: Not Found
User RatingN/A
Top Feedback
N/A
GitHub Stars
16
Weekly Downloads
43
Last Commit
2mos ago
@lukso/universalprofile-smart-contracts
The reference implementation for universal profiles smart contracts
License: Apache-2.0
TypeScript Definitions: Not Found
User RatingN/A
Top Feedback
N/A
GitHub Stars
18
Weekly Downloads
68
Last Commit
2mos ago
hardhat-gas-reporter
Gas usage per unit test. Average gas usage per method. (eth-gas-reporter for Hardhat)
License: MIT
TypeScript Definitions: Built-In
User RatingN/A
Top Feedback
N/A
GitHub Stars
134
Weekly Downloads
24K
Last Commit
2mos ago