mempenny vs backpack-ontology
mempenny is a plugin bundle for AI coding tools published by marcelopaniza. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). backpack-ontology is a plugin bundle for AI coding tools published by NoahIrzinger. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). As of our marketplace pass on 2026-10-18. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  mempenny |  backpack-ontology |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 0.9.4 Forks (GitHub): 0 Stars (GitHub): 2 Not marked · First seen |
Listed Version: 0.7.1 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | mempenny | backpack-ontology |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 2 (better) | 0 (worse) |
| Forks (GitHub) | 0 | 0 |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (backpack-ontology) |
| Transport | Not stated | Not stated |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Hooks it runs (differs) | 1 | Not published |
| Parts of the bundle (differs) | 8 | 6 |
| Licence (differs) | MIT | Apache-2.0 |
| Repository (differs) | github.com/marcelopaniza/mempenny | github.com/noahirzinger/backpack-ontology-plugin |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
mempenny
Keep Claude Code auto-memory lean. Triage (delete/archive/distill) memory files without losing forward-looking truth. Pairs with caveman.
backpack-ontology
A persistent knowledge graph engine for Claude Code. Gives your AI agent structured, searchable memory that persists across sessions — stored as typed graphs with nodes and edges. Features progressive discovery so the context window stays clean: Claude browses layer by layer, only pulling in what it needs. Supports freeform schemas, full-text search, graph traversal, and bulk operations. Data is stored as human-readable JSON following the XDG specification.
How to run each
mempenny As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install mempenny@claude-communitybackpack-ontology As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install backpack-ontology@claude-communityCommands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: mempenny · What it can do: backpack-ontology · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.