What is a B2B SaaS leads database?

A B2B SaaS leads database is a searchable collection of verified software-as-a-service companies with contact information, firmographic data, and technology signals. port587's database contains over 100,000 verified B2B SaaS companies that can be filtered by industry, geography, company size, revenue, and funding stage.

How much does the port587 leads database cost?

port587 uses pay-per-lead pricing with no subscriptions. Credits start at $49 for 1,000 leads (~$0.049/lead) and go down to ~$0.02/lead at agency volume (50,000+). Credits never expire, and you only pay when you export contact data.

Where does the data come from?

Leads are sourced from publicly available business directories, LinkedIn, and verified B2B data providers. All data is regularly cleaned, deduplicated, and validated through automated email verification and website enrichment.

How is port587 different from Apollo or ZoomInfo?

port587 is a pure data layer, not an all-in-one platform. You pay only for the leads you export (no seat-based subscriptions), use your own outbound tools, and own your data in CSV or JSON format. Unlike Apollo and ZoomInfo, there are no forced bundles of sequencing, CRM, or calling features.

No. Credits never expire. You buy them once and use them whenever you need to export leads.

Yes. You can create an API key from your dashboard and integrate lead search directly into your tools and workflows via the REST API.

What formats can I export?

Leads can be exported as CSV or JSON, ready for import into any CRM, enrichment tool, or spreadsheet.

How many SaaS companies are in the US?

The US is home to the largest concentration of B2B SaaS companies globally, with tens of thousands of active SaaS businesses ranging from bootstrapped startups to public companies. port587 indexes verified US SaaS companies filterable by size, revenue, category, and tech stack.

Can I filter US SaaS companies by company size?

Yes. You can filter by employee count (5–10, 10–50, 50–200, 200+), funding stage, estimated revenue range, product category, and tech stack to match your exact ICP.

SaaS Companies in the US

Why target US SaaS companies

Largest addressable market - the majority of B2B SaaS companies are US-headquartered.
Familiar sales motions - US SaaS buyers are used to cold email, demos, and product trials.
High concentration of funded startups - from bootstrapped micro-SaaS to well-funded Series B+ companies.
English-language outreach - no translation friction for your sequences.

How to filter for US SaaS leads

Set geography to United States.
Choose your company size - 5-50 employees for early-stage, 50-200 for growth-stage.
Narrow by category - devtools, martech, fintech, HR tech, security, etc.
Optionally filter by funding stage or estimated revenue to match your ICP.
Export as CSV or JSON → import into your outbound stack.

Who uses US SaaS lead lists

SDR teams selling B2B tools to SaaS companies in the US.
Agencies running cold email campaigns for SaaS-focused clients.
Founders doing founder-led sales into the US SaaS market.
Investors and researchers mapping the US SaaS landscape.

The US SaaS market represents the largest and most competitive segment globally. Starting from a SaaS-only database lets you skip the 80-90% of generic B2B records that aren't relevant.

Get started

Explore the port587 B2B SaaS leads database to search US companies, or create a free account to start filtering and exporting.