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.