Open-source and open-core software for agents, developer workflows, local tools, and useful internet products.

Open source should be something people can actually run, inspect, fork, and improve. OpenCore builds in public because useful software gets better when the implementation is visible, practical, and owned by the people using it.

Project	Stage	What it is	Stars
Email SDK	Public	A lightweight TypeScript email SDK for Resend, Postmark, SendGrid, Mailgun, Brevo, SMTP, and more.
OpenChat / OSSChat	Open source	An open-source AI chat platform with BYOK and self-hosting support.
TheoCounter	Web	A simple site that tracks how long Theo has not posted.
ClaudeDay	Web	A small site for national Claude day.
Convt	Public	A local-first file converter.
Agent Center	Unreleased	A control plane for starting, steering, and reviewing background coding agents.
Amend.sh	Beta	Product update automation for feedback, shipped work, changelogs, roadmaps, and customer notifications.
OpenBlocks	Experiment	An open web project for building with reusable blocks.
Beppo	WIP	A desktop workspace for delegating general tasks to AI agents.
Better Files	Native	Swift-based file tooling experiments for macOS.
cc-sync	Active	A CLI and sync service for keeping agent skills and MCP configuration in sync across machines.

Project	What it is	Stars
quad	An open-source Claude Cowork alternative experiment.
RQ	A small TypeScript request utility.
claudex	A Codex CLI fork for Claude models and opinionated workflows.
create	A customized Better T Stack scaffold.
leo-stack	An opinionated fork of Better T Stack.
warp-leo	OpenWarp customized around preferred workflows.
beff	A Convex Chef-style project that can use local Claude Code or Codex subscriptions.

Core maintainer: Leo.