Mem0 vs Vespa
An independent, evidence-based trust comparison of Mem0 and Vespa, two Memory & Knowledge projects in the HVTracker registry. Scores come from public, checkable signals — supply-chain provenance, OSSF Scorecard, maintenance, and adoption — not popularity.
Mem0 leads on trust — 86.3/100 (Grade A) vs 86.0/100 (Grade A), a 0.3-point gap. Full breakdown below.
| Signal | Mem0mem0ai/mem0 | Vespavespa-engine/vespa |
|---|---|---|
| HVTrust score | 86.3 | 86.0 |
| Evidence grade | A | A |
| Coverage grade | A | A |
| Overall rank | #57 | #60 |
| Rank in Memory & Knowledge | #3 | #4 |
| GitHub stars | 65.0k | 7.1k |
| Last updated | today | today |
| Build provenance | Yes | Yes |
| OSSF Scorecard | 5.5 / 10 | 6.3 / 10 |
| License | Apache-2.0 | Apache-2.0 |
| Downloads | 486k/wk | 200k/wk |
| Trust dimensions (points earned) | ||
| Safety / integrity / 25 | 19.4 | 18.1 |
| Identity & provenance / 18 | 18.0 | 18.0 |
| Transparency / 17 | 13.2 | 13.9 |
| Maintenance / 20 | 18.9 | 20.0 |
| Adoption / 20 | 19.1 | 16.3 |
| Runtime capability surface (full matrix) | ||
| MCP server | Implemented | — |
| External providers | 14 — Amazon Bedrock, Anthropic, Cohere, … | — |
| Requires API keys | Yes | No |
| Plugin surface | plugins | plugins |
| Provenance drift | Partial | Unknown |
How to read this: HVTrust (0–100) weighs supply-chain signals (provenance, OSSF Scorecard, signed commits, open license) alongside real-world adoption, scaled by an evidence-confidence factor. Grade bands: A ≥ 80, B ≥ 65, C ≥ 50, D < 50. Signals refresh daily. Full methodology v4.3 →