A catalog of ChatGPT & Codex plugins, sorted by people.
Archcore alternatives
Archcore by archcore-ai: Spec-driven development and context engineering for Claude Code, Cursor, Codex, and GitHub Copilot — backed by project context in Git. Here are 6 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? oh-my-openspec, Agent Deck, Spec-Driven Development got a push in the last two weeks.
- Want the most-watched option? Emulo has 306 stars to Archcore's 75.
6 alternatives, side by side
| Plugin | Stars | License | Last push | Packaged as |
|---|---|---|---|---|
| oh-my-openspec Spec-driven development workflow for Codex CLI and OpenCode, with planning, parallel task execution, and mechanical OpenSpec validation. | ★ 9 | MIT | 2026-11-14 | plugin |
| Context Guard Preserves authoritative requirements and verification evidence across long-running Codex tasks and context compaction. | ★ 4 | Apache-2.0 | 2026-11-15 | plugin |
| Emulo Mines selected evidence from local coding-agent sessions into private work, design, and writing profiles for Codex, Claude Code, and GitHub Copilot. | ★ 306 | MIT | 2026-10-12 | plugin |
| PMC Give Codex lasting project context in an Obsidian vault you control. | ★ 3 | MIT | 2026-08-18 | plugin |
| Spec-Driven Development Three-phase Requirements → Design → Tasks workflow for Claude Code and Codex — EARS notation acceptance criteria, autonomous execution loop, cross-spec dependencies, and post-implementation acceptance testing. | ★ 10 | MIT | 2026-11-01 | plugin |
| Agent Deck One MCP for context management: bind self-improving playbooks, MCP tools, and API keys to the session. | ★ 6 | MIT | 2026-11-13 | MCP server |
Picked by overlap between each project's own description and Archcore's, same category first. Ordered by that overlap, not by stars or payment.
Head-to-head
Emulo vs Archcore · Archcore vs Context Guard
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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