kindex vs backpack-ontology
kindex is a plugin bundle for AI coding tools published by jmcentire. 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 2026-10-15. 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 |  kindex |  backpack-ontology |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 0.15.0 Forks (GitHub): 5 Stars (GitHub): 36 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 | kindex | backpack-ontology |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 36 (better) | 0 (worse) |
| Forks (GitHub) (differs) | 5 (better) | 0 (worse) |
| 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) | 5 | Not published |
| Parts of the bundle (differs) | 8 | 6 |
| Licence (differs) | MIT | Apache-2.0 |
| Repository (differs) | github.com/jmcentire/kindex | 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
kindex
Kindex is a persistent knowledge graph for Claude Code. It turns Claude from a session-scoped tool into a project-scoped collaborator — capturing decisions, constraints, and context that survive across sessions, projects, and context resets. Memory plugins remember what happened. Kindex captures what it means and how it connects. Session 10 is as informed as session 1. Key features: session lifecycle management (tag_start, tag_resume, tag_end), constraint and watch enforcement across sessions, decision archaeology with reasoning preserved, and graph-structured context that surfaces insights by proximity rather than keyword search. Git blame tells you what changed. Kindex tells you why.
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
kindex As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install kindex@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: kindex · 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.