A catalog of ChatGPT & Codex plugins, sorted by people.
Citadel alternatives
Citadel by SethGammon: Operating layer for Claude Code and Codex: persistent project memory, intent routing and orchestration, installable as a Codex plugin. Here are 4 plugins in our catalog that describe a similar job, with the numbers you'd check before switching.
Why you might look elsewhere
- Want active development? Designer Skill got a push in the last two weeks.
- On a different tool? Living Brain mentions ChatGPT, Cursor.
4 alternatives, side by side
| Plugin | Stars | License | Last push | Packaged as |
|---|---|---|---|---|
| Living Brain A shared, persistent memory layer for AI: carry the same context across ChatGPT, Claude, Gemini, Codex, Claude Code and Cursor through MCP or an API. | ★ 6 | No license file | 2026-10-27 | MCP server |
| AgentOps DevOps layer for coding agents with flow, feedback, and memory that compounds between sessions. | ★ 454 | Apache-2.0 | 2026-11-15 | plugin |
| Designer Skill Plug-and-play MCP that gives your coding agent UI superpowers: design references, intent routing and a static anti-slop gate, no API key. | ★ 52 | MIT | 2026-11-12 | MCP server, skills |
| Waggle Persistent graph-backed conversational memory for Codex that recalls project decisions, constraints, preferences, and outcomes across sessions. | ★ 45 | Apache-2.0 | 2026-10-30 | plugin |
Picked by overlap between each project's own description and Citadel's, same category first. Ordered by that overlap, not by stars or payment.
Head-to-head
Citadel vs Living Brain · Citadel vs AgentOps
More: Memory & Context plugins · best Memory & Context plugins, ranked · all comparisons
Data from GitHub and each project's README, checked 2026-11-15. We haven't installed or audited these, and stars measure attention, not quality. Paid placements never change this page. Spot a mistake? hello@pickaplugin.com
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