Developer Resources

Getting started

If you’re new to developing with Smilo, you’re in the right place. These guides written by the Smilo community will introduce you to the basics of the Smilo stack and introduce core concepts that might be different from other app development you’re familiar with.

Need a more basic primer first? Check out

Smart Contract Languages

Any program that runs on the Smilo Virtual Machine (EVM) is commonly referred to as a “smart contract”. The most popular languages for writing smart contracts on Smilo are Solidity and Vyper, though there are others under development.

Vyper Security focused language for Smilo, based on Python.

Looking for other options?

Language Specific Resources

We're building a suite of language-specific landing pages for developer to learn about Smilo in their preferred programming langauge.

Developer tools

Smilo has a large and growing number of tools to help developers build, test, and deploy their applications. Below are the most popular tools to get you started. If you want to dive deeper, check out this comprehensive list.

Truffle A development environment, testing framework, build pipeline, and other tools.

Embark A development environment, testing framework, and other tools integrated with Smilo, IPFS, and Whisper.

Waffle A framework for advanced smart contract development and testing (based on ethers.js).

Etherlime Ethers.js based framework for dapp development (Solidity & Vyper), deployment, debugging, testing and more.

Buidler A task runner for Smilo smart contract developers

OpenZeppelin SDK The Ultimate Smart Contract Toolkit: A suite of tools to help you develop, compile, upgrade, deploy and interact with smart contracts.

The Graph A protocol for indexing Smilo and IPFS data and querying it using GraphQL.

Tenderly A platform to easily monitor your smart contracts with error tracking, alerting, performance metrics, and detailed contract analytics.

Python Tooling Variety of libraries for Smilo interaction via Python

Brownie Python-based development environment and testing framework.

web3j A Java/Android/Kotlin/Scala integration library for Smilo

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Integrated Development Environments (IDEs)

Visual Studio Code Professional cross-platform IDE with official Smilo support.

Remix Web-based IDE with built in static analysis, and a test blockchain virtual machine.

Superblocks Web-based IDE with built in browser blockchain virtual machine, MetaMask integration, transaction logger, and other features.

EthFiddle Web-based IDE that lets you write, compile, and debug your smart contract.

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Frontend Javascript APIs

Web3.js Smilo Javascript API

Ethers.js Complete Smilo wallet implementation and utilities in JavaScript and TypeScript

light.js A high-level reactive JS library optimized for light clients.

Web3-wrapper Typescript alternative to Web3.js

Looking for other options?

Backend APIs

Infura The Smilo API as a service

Cloudflare Smilo Gateway

Nodesmith JSON-RPC API access to Smilo mainnet and testnets


IPFS InterPlanetary File System is a decentralized storage and file referencing system for Smilo.

Swarm A distributed storage platform and content distribution service for the Smilo web3 stack.

OrbitDB A decentralized peer to peer database on top of IPFS.

Security tools

Slither Solidity static analysis framework written in Python 3

MythX Security analysis API for Smilo smart contracts

Mythril Security analysis tool for EVM bytecode

Manticore A command line interface that uses a symbolic execution tool on smart contracts and binaries.

Securify Security scanner for Smilo smart contracts

More on formal verification

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Testing tools

Solidity-Coverage Alternative solidity code coverage tool.

hevm Implementation of the EVM made specifically for unit testing and debugging smart contracts.

Whiteblock Genesis An end-to-end development sandbox and testing platform for blockchain.

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Block explorers

Block explorers are services that let you browse the Smilo blockchain (and its testnets), by finding information about specific transactions, blocks, contracts, and other on-chain activity.

Testnets and Faucets

The Smilo community maintains multiple testnets. These are used by developers to test their applications under different conditions before deploying to the Smilo mainnet.

Ropsten Proof of Work blockchain, test-ether can be mined

Rinkeby Proof of Authority blockchain, maintained by the Geth development team

Goerli Cross-client Proof of Authority blockchain, built and maintained by the Goerli community

Clients & Running your own node

The Smilo network is made up of many nodes who run compatible client software. The majority of these nodes run Geth or Parity, each of which can be configured in different ways according to your needs.

Geth Smilo clients written in Go

Parity Smilo client written in Rust

Besu (Pantheon) Smilo client written in Java

Ethnode Run an Smilo node (Geth or Parity) for local development.

Smilo Node Resources

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Best Practices, Patterns, and Anti-patterns

DappSys Safe, simple, flexible building-blocks for smart-contracts.

OpenZeppelin Contracts Library for secure smart contract development.

aragonOS Patterns for upgradeability & permission control.

Smart Contract Weakness Registry

Smart Contract Security Best Practices Guide

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Developer Support & Training

Smilo Stackexchange

ConsenSys Academy An end-to-end Smilo developer course that is self-paced and open year-round.

Solidity Gitter Chatroom

All Smilo Gitter Chatrooms

Cryptozombies Learn to code games on Smilo.

Chainshot Web based dapp coding tutorials.

Blockgeeks Online courses on blockchain technology

DappUniversity Learn to build decentralized applications on the Smilo blockchain

Ethernaut Solidity based wargame where each level is a contract to be hacked

Capture the Ether The game of Smilo smart contract security


Rimble UI Adaptable components and design standards for decentralized applications.


The Smilo community has adopted many standards that are helpful to developers. Typically these are introduced as Smilo Improvement Proposals (EIPs), which are discussed by community members through a standard process.