Decision Workspace
opencode-memory vs second-brain-cli vs thingd
Side-by-side comparison of Rust crates
43
opencode-memory
experimentalv0.1.4
Persistent semantic memory for AI agents — a single self-contained stdio MCP server over SQLite + sqlite-vec with local llama.cpp embeddings.
43
second-brain-cli
experimentalv0.5.3
Universal memory layer for AI coding agents — ingest, recall, and sync across Claude Code, Cursor, and more
55
thingd
experimentalv0.50.4
Core primitives for thingd, an object-shaped local memory engine for apps and agents.
Core Metrics
| opencode-memory | second-brain-cli | thingd | |
|---|---|---|---|
| Health Score | 43 | 43 | 55 |
| Total Downloads | 83 | 177 | 967 |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 0 | 0 | 0 |
| Releases | 4 | 10 | 62 |
| Last Updated | 8d ago | 15d ago | today |
| Age | 1m | 2m | 22d |
Health Breakdown
opencode-memory
Maintenance
12
Quality
11
Community
6
Popularity
2
Documentation
12
second-brain-cli
Maintenance
12
Quality
12
Community
6
Popularity
3
Documentation
10
thingd
Maintenance
19
Quality
14
Community
6
Popularity
4
Documentation
12
Technical Details
| opencode-memory | second-brain-cli | thingd | |
|---|---|---|---|
| Version | 0.1.4 | 0.5.3 | 0.50.4 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT | MIT | Apache-2.0 |
| Dependencies | 16 | 9 | 9 |
| Crate Size | 97KB | 41KB | 62KB |
| Features | 0 | 0 | 3 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2024 | 2024 |
| MSRV | 1.95 | — | 1.96 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •thingd leads with a health score of 55/100, but none of the options score above 80.