BuiltWith vs Closely: Data Enrichment Tool vs Sales Engagement Platform Comparison
Compare BuiltWith (data enrichment tool) and Closely (sales engagement platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Compare BuiltWith (data enrichment tool) and Closely (sales engagement platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Reviewed and updated September 4, 2026
BuiltWith vs Closely: Data Enrichment Tool vs Sales Engagement Platform Comparison
Sales teams building an outbound stack often weigh BuiltWith, a data enrichment tool for B2B lead data and contact enrichment, against Closely, a sales engagement platform for multi-channel sales outreach and engagement tracking. They cover different parts of the workflow, so this comparison covers what each one does, what each one costs, and where they overlap.
The Quick Answer
BuiltWith is a data enrichment tool for B2B lead data and contact enrichment; Closely is a sales engagement platform for multi-channel sales outreach and engagement tracking. By each vendor's own wording, BuiltWith lists technology lookups for individual sites and lead lists by technology, and Closely lists multichannel campaigns across linkedin and email and conditional sequence builder.
BuiltWith offers a lower entry point at $0/mo compared to Closely at $49/mo.
If your priority is finding accurate contact data for target accounts, BuiltWith is the one built for it; for coordinating outreach across email, phone, and social channels, that is Closely. Many teams run one of each.
Understanding the Core Difference
BuiltWith is BuiltWith is a web technology profiler and lead generation tool that reports which technologies websites use and builds lead lists of companies by technology, spend and lifecycle signals. Individual site lookups are free; paid plans add technology reports, keyword reports and CRM integration.
Closely is Outbound platform that runs automated campaigns across LinkedIn and email from a shared sender, with a conditional sequence builder, unified inbox, contact enrichment and AI personalization agents.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Free
Starter
BuiltWith Pricing (as of September 2026)
| Plan | Price |
|---|---|
| Free | Free |
| Basic | $295/mo |
| Pro | $495/mo |
| Team | $995/mo |
Source: BuiltWith Pricing
Closely Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Starter | $49/mo | 1 LinkedIn account, unlimited email accounts |
| Growth | $127/mo | 3 LinkedIn accounts, unlimited email accounts, 3,000 bonus credits/mo |
| Essential | $205/mo | 5 LinkedIn accounts, unlimited email accounts, 5,000 bonus credits/mo |
| Custom | Contact Sales | Unlimited seats, custom LinkedIn accounts and credits |
Source: Closely Pricing
Pricing Analysis
BuiltWith is more affordable at the entry level ($0/mo vs $49/mo). For teams with tight budgets or those just getting started with B2B lead data and contact enrichment and multi-channel sales outreach and engagement tracking, this price difference matters.
BuiltWith includes a free tier, letting you test the platform before committing financially.
Features Breakdown
- Technology lookups for individual sites
- Lead lists by technology
- Keyword reports
- Retail reports
- Trends and technology history
- Predictive leads
- and 3 more listed below
- Multichannel campaigns across LinkedIn and email
- Conditional sequence builder
- Smart Inbox unifying LinkedIn and email replies
- LinkedIn account warmup
- Dedicated residential IP for each LinkedIn account
- OAuth Gmail and Outlook connection plus custom SMTP
- and 4 more listed below
BuiltWith Key Features
- Technology lookups for individual sites
- Lead lists by technology
- Keyword reports
- Retail reports
- Trends and technology history
- Predictive leads
- Advanced lookup of historical technology use
- Report prioritization by spend, technology use and location
- Unlimited report download
Closely Key Features
- Multichannel campaigns across LinkedIn and email
- Conditional sequence builder
- Smart Inbox unifying LinkedIn and email replies
- LinkedIn account warmup
- Dedicated residential IP for each LinkedIn account
- OAuth Gmail and Outlook connection plus custom SMTP
- Email finder with a multi-step fallback process
- Phone number finder
- AI lead scoring and personalization agents
- Export from Sales Navigator, LinkedIn posts and events
The two lists below are a diff of each vendor's own feature list by exact wording, so a capability both tools offer can appear on either side under a different name.
Listed only by BuiltWith
- Technology lookups for individual sites
- Lead lists by technology
- Keyword reports
- Retail reports
- Trends and technology history
- Predictive leads
- Advanced lookup of historical technology use
- Report prioritization by spend, technology use and location
- Unlimited report download
Listed only by Closely
- Multichannel campaigns across LinkedIn and email
- Conditional sequence builder
- Smart Inbox unifying LinkedIn and email replies
- LinkedIn account warmup
- Dedicated residential IP for each LinkedIn account
- OAuth Gmail and Outlook connection plus custom SMTP
- Email finder with a multi-step fallback process
- Phone number finder
- AI lead scoring and personalization agents
- Export from Sales Navigator, LinkedIn posts and events
Integration Ecosystem
BuiltWith Integrations
BuiltWith connects with: Pardot, Zoho CRM, Close.io, HubSpot.
Closely Integrations
Closely connects with: Salesforce, Pipedrive, HubSpot, GoHighLevel, Gmail, Microsoft Outlook, SMTP, Webhooks.
Shared Integrations
Both tools integrate with: HubSpot.
Integrations listed only by BuiltWith: Pardot, Zoho CRM, Close.io.
Integrations listed only by Closely: Salesforce, Pipedrive, GoHighLevel, Gmail, Microsoft Outlook, SMTP, Webhooks.
Use Case Recommendations
Best Fit for BuiltWith
- Budget-conscious teams looking for an affordable data enrichment tool
- Teams that want to start free and scale up as needs grow
- Revenue operations teams building targeted prospect lists
- Marketing teams enriching CRM data for segmentation
Best Fit for Closely
- Budget-conscious teams looking for an affordable sales engagement platform
- Teams that need a wide feature set (10 capabilities listed)
- Organizations with complex tech stacks needing broad integration support (8 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
Feature Comparison Summary
| Feature | BuiltWith | Closely |
|---|---|---|
| Starting Price | Free | $49/mo |
| Top Tier Price | $995/mo | Contact Sales |
| Total Features Listed | 9 | 10 |
| Integrations | 4 | 8 |
Getting Started Checklist
- Define your B2B lead data and contact enrichment and multi-channel sales outreach and engagement tracking requirements and monthly budget
- Estimate your expected data credits or contact lookups and sequences and engagement actions to find the right tier
- List the integrations your team currently relies on
- Sign up for free trials or demos of both platforms
- Run a small test with each tool before making a commitment
- Evaluate the onboarding experience and support quality
Final Thoughts
BuiltWith serves the B2B lead data and contact enrichment side of an outbound stack and Closely the multi-channel sales outreach and engagement tracking side. BuiltWith offers a more accessible entry point, while Closely starts at $49/mo. Your decision should weigh pricing against the specific features that matter most for your workflow.
Start with a trial of each to see which platform fits your team's daily process. The best tool is the one your team actually uses consistently.
Pricing and features verified as of September 2026. Visit BuiltWith and Closely for current information.
About the author.
Tim Carden is CMO / CTO at RevenueFlow, which builds and operates outbound revenue engines for B2B companies. Studied at McGill University.
Tim Carden · CMO / CTO
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