EtherCalc

Domain: sheet.folk.zone
Image: audreyt/ethercalc:latest

EtherCalc is a real-time collaborative spreadsheet: the spreadsheet counterpart to Etherpad. Anyone with a room URL can view and edit; no account required. It runs as a single workerd container with built-in persistence, no external database needed.

• Real-time multi-user spreadsheet editing
• Formulas, multiple sheets per room
• No accounts: anonymous read/write via room URL
• CSV / Excel / ODS import and export
• Room index disabled (ETHERCALC_DISABLE_ROOM_INDEX=1) so rooms can't be enumerated

State persists to the folkzone_ethercalc_data Docker volume mounted at /data. The container runs with a read-only root filesystem and no-new-privileges per upstream's hardening recommendations (writable /tmp is provided via tmpfs).

Deployed for the Pillowfort Archival Initiative (2026-10-23) after they asked about spreadsheet functionality on pad.folk.zone.

• folk.zone Services
• EtherCalc
• EtherCalc GitHub
• Return to folkzone