> For the complete documentation index, see [llms.txt](https://docs.horaos.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.horaos.com/structure/openethereum.md). # OpenEthereum Fast and feature-rich Ethereum client. ![](https://2379742924-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MVUgUHzkUwMOUp4ksJz%2F-Mb6PvSSyOjamanFzUw3%2F-Mb6WEJIIOWTXUQEncMc%2Fopenethereum_logo.png?alt=media\&token=edf9738b-b2f7-4434-a5a2-931d2f630f4e) **Built for mission-critical use**: Miners, service providers, and exchanges need fast synchronisation and maximum uptime. OpenEthereum provides the core infrastructure essential for speedy and reliable services. * Clean, modular codebase for easy customisation * Advanced CLI-based client * Minimal memory and storage footprint * Synchronise in hours, not days with Warp Sync * Modular for light integration into your service or product ![](https://2379742924-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MVUgUHzkUwMOUp4ksJz%2F-Mb6PvSSyOjamanFzUw3%2F-Mb6Vo3zwerlPvrvayrQ%2Fopenethereum.png?alt=media\&token=3a73906f-78ab-494f-801a-c971cd046ecf)