Best List Building Software: Our Top 10 Picks for 2025
Best list building software:
Say goodbye to complicated and time-consuming list building.
We're taking an in-depth look at the best list building software available. Scroll to see the features, benefits and pricing of each 👇
1. Cognism
Cognism is number one on our list of list building tools. It's built for larger organisations looking for accurate B2B data in Europe. The data is top-notch, ensuring your sales outreach efforts always reach the right decision-makers.
Compliance with global data protection regulations makes it a trustworthy choice for international businesses looking to enter new markets.
What's more, its AI-powered Sales Companion makes list building easier than ever before with strategic segmentation for target account lists. You can apply your ideal customer, market or segment to your search and create purposeful prospecting lists that go beyond the norm.
Best features:
- Sales Companion for personalised access to in-depth account data to ensure fresh and fast outreach.
- Phone-verified cell phone numbers to help you connect with 87% of your list.
- Exclusive on-demand verified cell phone and email data set Diamond Data®.
- Unrestricted access to person and company-level data*.
- Instant and scheduled CRM enrichment and on-demand CSV enrichment.
- Intent data by Bombora.
- International coverage: EMEA, NAM, APAC.
- Easy platform setup.
- Integrations with CRMs and sales engagement tools.
- Focus on quality GDPR and CCPA-compliant data.
- Database checked and cleaned against global DNC lists.
- Find prospects using ChatGPT-style textual or voice prompts with Cognism AI Search.
- Fast and friendly support team.
*Subject to fair usage policy
What customers say:

“Before Cognism, I would go through a list of 500 companies and manually extract their LinkedIn URLs. That’s 5-10 hours of manual work, repeated 2-3 times per month for every client kickoff. Cognism can do it in about 30 seconds.”
Pricing:
- Two packages to choose from: Grow and Elevate (Includes Signals).
- All packages include contact and company data, including our phone-verified Diamond Data® contacts, target market analytics and integrations to leading CRM and engagement tools.
- No extra charge for access to global and regional data — NAM, EMEA, and APAC are included in all packages.
- Diamonds on Demand and intent data powered by Bombora as add-ons.
For more information, check out the Cognism pricing page, or skip ahead and test our data with 25 free leads 👇
2. Kaspr
Kaspr is a plug-and-play list building tool for individuals and SMBS. It offers a fresh and reliable European database that seamlessly integrates with your current sales workflows.
It's great for email list building because it includes bulk lead list enrichment, unlimited B2B emails* and a Chrome extension for easy LinkedIn and Sales Nav targeting.
Best of all, it has a self-service business model, so you can start selling from day one!
*Subject to a fair usage policy.
Best features:
- Free version.
- Contact enrichment from a LinkedIn people search, group or event.
- Seamless experience across the Chrome Extension and web app.
- Integrations with HubSpot, Pipedrive, Lemlist, Salesforce, and more.
- Data is checked and verified against 150 sources.
- 120M+ European contacts.
- Data coverage spans the US, Europe and APAC.
- GPDR and CCPA aligned.
- Lead organisation using lists and notes.
- Team analytics.
- Request data with a waitlist.
Pricing:
- Kaspr provides a free plan for all new users.
- The paid plan’s starting price is $49 per user per month.
3. LeadFuze

LeadFuze is a lead generation platform that helps businesses build lists of accurate leads automatically, with real-time email verification.
It automates the process of finding leads that match your target criteria, saving time. However, some users may find the interface complex, and the cost can be a barrier for smaller businesses.
Best features:
- Automated lead generation.
- Real-time email verification.
- Integration with various CRMs.
- Extensive search filters.
Pricing:
LeadFuze’s basic plan starts at $132.30 monthly, with higher-tier plans offering additional features.
4. D&B Hoovers
D&B Hoovers is list building software that enables users to build targeted lists quickly and prioritise prospects effectively.
With its extensive business information database, you can evaluate credit risk, gain deeper customer insights, and discover growth opportunities.
Although it might be expensive for small businesses and startups, it’s a valuable resource for enhancing business strategies.
Best features:
- Customisable email list building.
- Risk management analytics.
- Intent data.
Pricing:
D&B Hoovers offers custom pricing based on your business requirements. They also provide a 7-day free trial to explore the platform.
5. LinkedIn Sales Navigator
LinkedIn Sales Navigator is a prospect list building tool designed to help sales professionals leverage LinkedIn's vast network.
It offers advanced search filters, lead recommendations, and real-time insights, enabling users to identify and engage effectively with potential customers.
One thing to note is that Sales Navigator does not provide direct contact information like emails or phone numbers, often requiring integration with tools like Cognism or Kaspr to fill in these details.
Best features:
- Advanced search filters.
- InMail messaging.
- Buyer interest alerts.
Pricing:
- Sales Navigator Core is priced at $99.99 per user per month.
- Discounts available for annual billing.

“If you are looking for one B2B data provider to power the UK, Europe and North America. Cognism’s got you covered.”
6. Klaviyo
Klaviyo is an email list building tool that helps businesses deliver personalised experiences across owned marketing channels.
Its robust segmentation and automation capabilities enable businesses to build and manage highly targeted email lists and SMS campaigns for enhanced engagement.
Best features:
- Automated omnichannel outreach.
- Always-on insights and optimisations.
- Pre-built templates and intuitive features.
Pricing:
- Based on active profiles and the number of credits you need.
- A free version is available to test out the platform.
7. ZoomInfo
ZoomInfo is one of the most recognised B2B contact databases, offering comprehensive company and contact intelligence to empower Enterprise sales, marketing, and recruiting teams.
It does well when it comes to data volume and depth, giving users access to a large volume of B2B contact data, complete with job titles, direct dials, company info, and even intent data, making it a decent platform for building lists.
Best features:
- Web form optimisation.
- Website visitor tracking.
- Digital advertising.
- Buyer intent.
Pricing:
ZoomInfo does not publish its pricing publicly. Plans are based on user seats, features, and data volume. Expect enterprise-level pricing, typically in the thousands per year.
8. OptinMonster
List building software, OptinMonster is up next. It helps websites convert visitors into subscribers and customers through pop-ups, forms, and behavioural targeting.
With its drag-and-drop builder and advanced targeting rules, OptinMonster allows users to capture emails from website visitors in creative and strategic ways. It’s perfect for eCommerce and content-driven brands aiming to grow their email lists.
OptinMonster is purely an on-site lead capture tool and does not offer prospect databases or contact enrichment, so it works best when paired with other outbound tools like Cognism or Kaspr.
Best features:
- Exit-intent pop-ups.
- A/B testing for forms.
- Geo-location targeting.
- Integration with major email platforms.
- Mobile-friendly campaign templates.
Pricing:
- Plans start at $9/month for basic features.
- Pro and Growth plans offer more advanced functionality at $29 and $49/month, respectively.
9. VoilaNorbert
VoilaNorbert is a sales list building tool that helps you discover and validate professional email addresses for your outbound campaigns.
It’s ideal for supplementing your B2B list building with high-accuracy email addresses. It integrates with various CRMs and allows for bulk email discovery and verification, making outreach smoother and more effective.
However, like many other tools on this list, it lacks a built-in database of potential customers, so users must supply company domains or names to extract emails. It’s also less feature-rich than platforms offering full-funnel lead generation.
Best features:
- Email finder and bulk verifier.
- Gmail plugin.
- Enrichment API for developers.
- CRM integrations (HubSpot, Salesforce, etc.)
Pricing:
- The free plan includes 50 leads.
- Paid plans start at $49/month for 1,000 leads.
- You can scale up to Enterprise packages with 50,000+ leads.
10. MailMunch
MailMunch is automated list building software that enables businesses to capture leads from their websites and convert them through automated campaigns.
It combines sleek opt-in forms with email marketing features, making it ideal for growing your subscriber base and nurturing them over time. It’s particularly popular among bloggers, small businesses, and E-commerce sites.
Considering this, MailMunch isn’t designed for outbound prospecting or contact discovery, so it’s more of a conversion-focused tool than full-scale B2B list building software.
Best features:
- Pop-up and embedded form builder.
- Email newsletters and autoresponders.
- Landing page builder.
- Detailed analytics.
- Integration with major CMS and ESPs.
Pricing:
- A free plan with limited features is available. Premium plans start at $13.99/month.
- Advanced segmentation and A/B testing are available in higher pricing tiers.
FAQs: List building tools
What is list building software?
List building software helps businesses identify, collect, and manage contact information (usually emails and phone numbers) from potential customers or leads. These tools vary from data mining platforms to pop-up form builders used on websites.
Which tool is best for B2B list building?
For B2B, tools like Cognism, Kaspr, and ZoomInfo are top-tier because they offer verified data, advanced filtering, and CRM integrations. Cognism, in particular, stands out for its compliance and global reach.
Can I use multiple tools together?
Absolutely. Many businesses combine tools like Kaspr and LinkedIn Sales Navigator for prospecting, Cognism or VoilaNorbert for contact info, and email list building tools like OptinMonster or Klaviyo for email marketing and nurturing.
Are these tools GDPR compliant?
Not all tools guarantee GDPR compliance. Cognism is notably one of the few platforms that offer fully GDPR and CCPA-compliant B2B data, making it a safer choice for international teams.
Are free plans worth it?
Free plans can be a great way to test a tool’s core features. Still, most businesses need a paid plan to access essential capabilities like integrations, automation, or bulk data export.
What is the best list building software?
If you’re looking for B2B list building software that gives you:
✔️ AI-powered insights tailored for every user.
✔️ More mobile numbers that go through to the right contacts.
✔️ More confidence when prospecting.
✔️ More targeted leads.
✔️ And more incoming revenue.
Then, Cognism is the best choice. Click 👇 to book your demo today!