RegistryCompare › Neo vs Tambo

Neo vs Tambo

An independent, evidence-based trust comparison of Neo and Tambo, two UI & App Builders projects in the HVTracker registry. Scores come from public, checkable signals — supply-chain provenance, OSSF Scorecard, maintenance, and adoption — not popularity.

Neo leads on trust — 85.4/100 (Grade A) vs 83.5/100 (Grade A), a 1.9-point gap. Full breakdown below.
Signal Neoneomjs/neo Tambotambo-ai/tambo
HVTrust score 85.4 83.5
Evidence grade A A
Coverage grade B B
Overall rank #36 #49
Rank in UI & App Builders #2 #3
GitHub stars 3.2k 11.2k
Last updated 1d ago 1d ago
Build provenance Yes Yes
OSSF Scorecard 5.7 / 10 5.3 / 10
License MIT MIT
Downloads 5k/wk 6k/wk
Trust dimensions (points earned)
Safety / integrity / 25 18.5 19.1
Identity & provenance / 18 18.0 18.0
Transparency / 17 13.3 13.0
Maintenance / 20 19.9 16.7
Adoption / 20 13.4 14.8
Runtime capability surface (full matrix)
MCP server Implemented Declared
External providers 3 — Anthropic, Google Gemini, OpenAI 2 — Anthropic, OpenAI
Requires API keys No Yes
Plugin surface plugins plugins
Provenance drift Match Match
Open in the live compare tool → Neo profile Tambo profile More UI & App Builders →

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 v4.2 →