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 (4)
Full build guide →| Provider | URL | Network |
|---|---|---|
| Rivet | https://etc.rivet.link | mainnet |
| Blockscout | https://etc.blockscout.com/api/eth-rpc | mainnet |
| ETC Cooperative | https://rpc.mordor.etccooperative.org | testnet |
| 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, carried through the Olympia upgrade for network continuity. etclabscore/core-geth v1.12.x was unmaintained June 2024–March 2026 (21 months), accumulating six unpatched CVEs that were actively exploited against ETC mainnet bootnodes. All CVEs patched by White B0x at ethereumclassic/core-geth, pending release as v1.13.0.
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 →