# BuiltWith alternative for sales teams researching technology stacks

> For sales teams researching technology stacks, Zalwin's B2BTechStackPulse, VendorStackWatch, MigrationSignalRadar cover technographics with a free preview without an account, paid plans from $4.99, and API and MCP access. Sources are public; BuiltWith is a separate product we are not affiliated with.

| What you need | Zalwin | BuiltWith |
|---|---|---|
| Who it is for | sales teams researching technology stacks | Check BuiltWith's site |
| Free preview | Yes, no account needed | Check BuiltWith's site |
| Starting price | $4.99 (published on each product page) | Check BuiltWith's site |
| Data sources | Read-Only MX/TXT DNS, HTTP Header & Script Technographics Scanner; Public DNS, SPF, SaaS verification records and page scripts; Public DNS TXT/CNAME records and page scripts | Check BuiltWith's site |
| Records available now | Scan-based tool | Check BuiltWith's site |
| API and AI-agent (MCP) access | Yes: REST API and MCP tools | Check BuiltWith's site |
| Update cadence | B2BTechStackPulse: runs live per scan; VendorStackWatch: runs live per scan; MigrationSignalRadar: runs live per scan | Check BuiltWith's site |

- [B2BTechStackPulse](https://zalwin.com/b2btechstackpulse): Live company domain DNS, HTTP header and JS technographics detector for B2B sales enrichment
- [VendorStackWatch](https://zalwin.com/vendorstackwatch): Daily tech-stack change detection across your named accounts (tools added or dropped) from public DNS, SPF and scripts
- [MigrationSignalRadar](https://zalwin.com/migrationsignalradar): Detects companies running two competing ESPs, CRMs or storefront platforms at once, a sign of an active replatform

**Is Zalwin affiliated with BuiltWith?** No. BuiltWith is a trademark of its owner. This page describes Zalwin's tools; for BuiltWith's current features and pricing, see its own site.

**What does it cost?** B2BTechStackPulse from $4.99; VendorStackWatch from $4.99; MigrationSignalRadar from $4.99. Every tool has a free preview.

**Where does the data come from?** Read-Only MX/TXT DNS, HTTP Header & Script Technographics Scanner; Public DNS, SPF, SaaS verification records and page scripts; Public DNS TXT/CNAME records and page scripts. Public sources only; company-level records.

_BuiltWith is a trademark of its owner; Zalwin is not affiliated with it._