New Site Radar vs BuiltWith
Disclosure: we build New Site Radar. Everything below about BuiltWith comes from its public pages as we read them on October 4, 2026 (sources at the bottom). Products change; if something here is out of date, email hello@newsiteradar.com and we will fix it.
BuiltWith is a website technology lookup that shows which technologies a website uses and offers lead lists grouped by technology. New Site Radar's narrower job is tracking early traffic signals for newly registered AI tool websites.
Side by side
- What it tracks
- New Site Radar: AI tool sites registered in 2025 or later that are gaining traffic
- BuiltWith: Website technology lookup: which of 127,700+ tracked technologies a site uses, with data from 491.9 million domains, technology adoption trends and history, lead lists by technology, and eCommerce data
- Interface language
- New Site Radar: English, Spanish, Simplified Chinese
- BuiltWith: Pages in English, German, French, Spanish, Italian, Russian, Korean, Japanese, Simplified Chinese and Arabic
- Paid plan
- New Site Radar: Pro $19/month or $149/year
- BuiltWith: Basic $295/month, Pro $495/month, Team $995/month, with a discount for yearly billing; Team Ultra also available; cancel any time
- Free plan
- New Site Radar: 20-site monthly sample of the rankings, every site page, watchlist of 10 sites
- BuiltWith: Individual site lookups, free with no time limit
- Second-source check of traffic numbers
- New Site Radar: Yes: traffic is compared with a second, independent source (search-traffic estimates, or Tranco rank for brand-driven sites); sites only one source covers are labelled; site owners can request a correction, with review outcomes shown on the site page.
- BuiltWith: Not described on the pages we checked
- Revenue view
- New Site Radar: Detected payment provider and real pricing, with a modelled revenue range and its confidence
- BuiltWith: No revenue figures for individual sites described; its eCommerce data includes exportable attributes such as spend, revenue and employee count
- API / MCP
- New Site Radar: Remote MCP server, 7 read-only tools; free accountless key: 20 calls/day, Pro-only fields hidden; Pro keys: no daily cap.
- BuiltWith: APIs, MCP tools and SDKs described for connecting AI agents to its data; API prices not checked
When BuiltWith is the better fit
- You need individual website technology lookups that are free with no time limit.
- You want lead lists of websites grouped by the technology they use.
When New Site Radar is the better fit
- You want AI tool sites that launched recently and are starting to grow, before they are well known.
- You want to know how far to trust each number: every figure is checked against a second source where one exists, and the evidence is on the site page (see the methodology).
- You want to query the data from Claude Code, Cursor or Codex over MCP.
Try it: the growth rankings have a free monthly sample, and Pro shows the full board.
Sources
- BuiltWith home page: https://builtwith.com/ (checked October 4, 2026)
- BuiltWith plans page: https://builtwith.com/plans (checked October 4, 2026)
- New Site Radar: pricing, methodology