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TechSight CLI

Free tech stack detection for 7,500+ technologies — no API keys.

Quick install
$ pip install -e ".[dev]"

What it does

A Python CLI that fingerprints a domain's tech stack from HTTP headers, cookies, meta tags, script sources, HTML patterns, DNS TXT records, and TLS certificates. 7,500+ technologies across 100+ categories, zero API keys, zero per-lookup cost. Drops straight into a lead enrichment pipeline — give it a CSV with a domain column and it fills in the tech stack column.

How it works

TechSight CLI — how it works

Features

  • 7,500+ technology signatures via WebAppAnalyzer community database
  • 7 detection vectors: DNS, headers, cookies, meta, scripts, HTML, TLS
  • Multi-vector confidence model — 95% threshold with 2+ independent signals
  • CSV enrichment with domain-column autodetection and configurable concurrency
  • JSON output for scripting, Rich table for terminal-first workflows

Who it's for

  • Filling Tech Stack columns in lead enrichment CSVs at zero marginal cost
  • Qualifying prospects by tech stack before cold outreach
  • Replacing paid tech-detection APIs in data-prep pipelines

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