Fallow
Codebase intelligence for TypeScript and JavaScript
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Run npx fallow audit in any TypeScript or JavaScript repository. Fallow builds a deterministic dependency graph, then reports unused code, cycles, duplicated logic, complexity, and architecture drift. Its changed-code gate blocks only findings introduced by the current change, so existing debt does not stop adoption. Use the same evidence locally, in CI, editors, and MCP workflows. The analyzer is free and MIT licensed; optional Fallow Runtime adds production execution evidence.
PH · launched Sep 18, 2026 · 2 upvotes (top 26%) · 0 views
Niche: automated code review tools · 205 launches, 8 in the last 7 days ▼ -11% · Explore this niche →
Category and tags
- Horizontal
- Dev tools
- Developer
- Not AI
- Hobby / open-source project
- Open Source
- Developer Tools
- GitHub
Visit website ↗ Source listing ↗
More like this: all 205 launches in automated code review tools →
Could you build this?
No Building a deterministic static analysis tool that computes cross-file dependency graphs, cycle detection, duplication, and delta-based architectural gates requires advanced compiler engineering and static analysis expertise.
What it would actually take: The core CLI needs a high-performance engine (written in Rust or C++) utilizing robust TypeScript/JS parsers (like SWC or Biome) to traverse import/export graphs and resolve complex module resolutions (monorepos, tsconfig paths). Implementing exact dead-code identification, cyclomatic complexity algorithms, duplicate token matching, and git-diff delta analysis without false positives requires deep knowledge of formal language theory and program analysis.
Competitors
Other products that read as similar to this one : 207 launches clear the similarity bar, closest 8 shown.
Attention rank: #75 of 208 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 319 days after the earliest competitor.
- CodeDrift · hn · 2026-03-05 · 5 upvotes · similarity 0.47
- Deslop · hn · 2026-10-13 · 32 upvotes · similarity 0.45
- Typical is TypeScript with type-safety at runtime · hn · 2026-01-11 · 8 upvotes · similarity 0.45
- RepoMap · ph · 2026-10-01 · 2 upvotes · similarity 0.43
- Belgie · hn · 2026-07-06 · 5 upvotes · similarity 0.43
- ts-rust · github · 2026-10-07 · 1036 upvotes · similarity 0.42
- SharpTS · hn · 2026-01-09 · 6 upvotes · similarity 0.42
- I wrote a book · hn · 2025-12-08 · 53 upvotes · similarity 0.42
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.