Developer Directory
Everything you need to build on Ethereum Classic — networks, RPC endpoints, execution clients, development tools, and contract frameworks. With the Olympia upgrade, the full Ethereum toolchain works on ETC without modification, making the ETC developer experience identical to Ethereum mainnet.
Networks
Ethereum Classic
mainnetMordor Testnet
testnetRPC Endpoints (2)
Full build guide →| Provider | URL | Network |
|---|---|---|
| Blockscout | https://etc.blockscout.com/api/eth-rpc | mainnet |
| Blockscout | https://etc-mordor.blockscout.com/api/eth-rpc | testnet |
Node Clients (2)
Fukuii
Ethereum Classic's first native client — an EVM execution client in Scala 3 LTS on Pekko Typed Actors, running on the JVM. One binary runs several networks at once in one JVM process, each isolated with its own state, its own metrics registry, and its own configuration; a further network is configuration, not a new client.
Core-Geth
A go-ethereum derivative maintained for Ethereum Classic, released from the ethereumclassic community organization. The v1.12.x line went 21 months without security maintenance; Core-Geth v1.13.0, prepared by White B0x, fixes six CVEs, one of them exploited against ETC mainnet bootnodes in March 2026, and moves the client to Go 1.26.
Developer Tools (11)
Hardhat
Ethereum development environment for compiling, deploying, testing, and debugging smart contracts.
Visit →Foundry
Blazing fast, portable, and modular toolkit for Ethereum application development written in Rust.
Visit →Remix IDE
Browser-based IDE for Solidity development with built-in compiler, debugger, and deployment tools.
Visit →Truffle Suite
Development framework with built-in testing, debugging, and deployment pipeline.
Visit →web3.js
Collection of libraries for interacting with Ethereum nodes using HTTP, IPC, or WebSocket.
Visit →OpenZeppelin
Library of secure, audited smart contract templates including ERC-20, ERC-721, access control, and more.
Visit →Slither
Static analysis framework for Solidity, detecting vulnerabilities and code optimization opportunities.
Visit →Mythril
Security analysis tool for EVM bytecode. Detects security vulnerabilities in smart contracts.
Visit →