Open sourceTypeScript · ≈7.8k stars · MIT
Fast Jev Compaction
Lossless, decision-based context compaction for Claude Code
A Claude Code plugin and npm library that replaces the compaction summary. It scores each tool call and result, drops or truncates the stale ones, and keeps everything else word for word.
Neighbours on the workbench
JavaScript · ≈292k stars · MIT
affaan-m/ECC
Agent harness performance optimization system: skills, instincts, memory and security for coding agents.
Maintained by Affaan Mustafa
TypeScript · ≈258k stars · MIT
NousResearch/hermes-agent
The agent that grows with you.
Maintained by Nous Research
Python · ≈138k stars · Apache-2.0
Graphify-Labs/graphify
A /graphify skill that turns a codebase, docs and schemas into a queryable knowledge graph.
Maintained by Graphify-Labs
Connections
Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.
Sources
Verified Oct 29, 2026