A catalog of ChatGPT & Codex plugins, sorted by people.
Kernel alternatives
Kernel by ariaxhan: Hook-enforced guardrails for Codex and Claude Code with blocked destructive commands, one-time human tokens for irreversible operations, context-blind verification agents, and SQLite agent memory recalled at session start. 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? Bulkhead, Mnemoverse Memory got a push in the last two weeks.
- Want the most-watched option? Bulkhead has 35 stars to Kernel's 15.
4 alternatives, side by side
| Plugin | Stars | License | Last push | Packaged as |
|---|---|---|---|---|
| Bulkhead Guards for machines that run many Codex and other agent sessions at once: a PreToolUse hook on Bash blocks name-based process kills, port collisions, destructive git commands on another session's worktree, whole-disk scans and long foreground sleeps, and holds heavy commands back when RAM runs low. | ★ 35 | MIT | 2026-11-14 | plugin |
| Mnemoverse Memory Hosted AI agent memory that learns from outcomes, over remote MCP with OAuth sign-in: tell it a recalled memory helped or misled and it re-ranks what comes back next, with shared rooms for multi-agent work. | ★ 0 | MIT | 2026-11-14 | MCP server, plugin |
| GCF Proxy Save 71% on MCP tool call tokens by wrapping any server with GCF encoding, with session stats hook and setup skill. | ★ 3 | Apache-2.0 | 2026-09-23 | MCP server, plugin, skills |
| HOTL Plugin Human-on-the-Loop AI coding workflow plugin for Codex, Claude Code, and Cline with structured planning, review, and verification guardrails. | ★ 27 | MIT | 2026-07-06 | plugin |
Picked by overlap between each project's own description and Kernel's, same category first. Ordered by that overlap, not by stars or payment.
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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