Caldera

Caldera is a social network that turns GitHub repositories into a virtual city and Obsidian vaults into living profiles.

Caldera is a social platform built for developers and writers who use GitHub and Obsidian. It turns public GitHub repositories into a simulated city where buildings represent repos and commits light up windows, while coding agents appear as drones. Users can also connect an Obsidian vault to generate a living profile featuring a daily journal, activity scores, streaks, and timelines. The platform facilitates networking through friend lists, groups, end-to-end encrypted note sharing, and a system of asks and offers backed by gravity points. The service operates privately by reading only repository metadata without accessing internal code, and processes Obsidian vaults directly on the user device. It runs on multiple desktop and mobile platforms and offers an open protocol for self-hosting.

Caldera at a glance

Best for: Software engineer, Writer
Runs on: Web, macOS, Windows, Linux, iOS, Android
Pricing: Free
Released: October 2026
Category: AI productivity tool
Website: caldera.social

Key features

Turns GitHub repos into a visual city with commit activity
Generates living profiles from Obsidian vaults
Displays coding agents as drones over active repositories
Sends end-to-end encrypted notes privately between friends
Supports asks, offers, and gravity points for mutual help
Provides daily journal entries and activity streaks
Tracks AI token usage by model and provider

Use it for

Discovering peers and collaborators by what they build and write
Displaying public code repositories as an interactive city
Sharing encrypted notes securely with friends
Posting and fulfilling community asks and offers

Alternatives to Caldera

Claudian — Turns an Obsidian vault into a functional directory for AI agents.
Obsidian Local REST API — Connect scripts, browser extensions, and AI agents directly to your vault.
MCP Obsidian — Connects Claude directly to read, search, and edit notes in an Obsidian vault.
Claude Obsidian — Maintains user ownership of files in a local-first, source-cited vault.
Obsidian Mind — It gives AI coding agents persistent memory so they never forget past context.
SwarmVault — Compiles raw sources into a local-first knowledge graph without requiring cloud access.
Obsidian Wiki — Compiles knowledge into markdown and carries context across agent sessions.
Obsidian Second Brain — Agent memory as plain Markdown notes that keep themselves current
ThinkBoard — Edit Obsidian canvases instantly from a dashboard overlay above your desktop.
Obsidian Skills — Integrates AI agents directly with Obsidian vaults and markdown files.
Neural Creator Dashboard — It visualizes content nodes and connections locally in the browser with no backend service.
Obsidian Copilot — Runs agents directly inside Obsidian with any AI model and zero lock-in.

All Caldera alternatives