Free ZoomInfo alternatives: 5 apps ranked by verified data

Facts checked Nov 8, 2026AppBreakup editorialHow we rank

5 of the 7 ZoomInfo alternatives we track can be used for free (free, open source, or with a free plan). Apollo.io, Hunter and Clay rank highest, with facts last verified Nov 8, 2026.

Quick comparison

#	App	Pricing	Verified price	Open source	Platforms	Verified facts	Score
1	Apollo.io	Free plan + paid	—	No	Web, Browser extension	4 of 4	68.8
2	Hunter	Free plan + paid	$49/month (Starter, monthly)	No	Web, Browser extension	8 of 8	64.8
3	Clay	Free plan + paid	From $185 a month (Launch)	No	Web	8 of 8	61.8
4	Lusha	Free plan + paid	—	No	Web, Browser extension	4 of 4	61.8
5	6sense	Free plan + paid	—	No	Web, Browser extension	4 of 4	38.6

1. Apollo.ioTop pick
Best for: Startups and small sales teams that want contact data and outreach sequencing in one affordable tool
Free plan + paidWeb, Browser extension
68.8
score / 100
Why switch from ZoomInfo
Far cheaper and self-serve, with a free plan and built-in email sequences.
Pros
Free plan with no time limit for light prospecting
Data, email sequences and dialer in one product
Chrome extension reveals contacts while browsing
Syncs with Salesforce, HubSpot and other common tools
Cons
Credit system: unused credits expire each billing cycle
Free plan can only connect Gmail inboxes
API access is limited to custom plans
Visit Apollo.io Compare with ZoomInfo Details and reviews
How this score is calculated
Editorial fit ×0.3100
Reviews ×0.363
Clicks (90 days) ×0.150
Freshness ×0.15100
Votes ×0.150
0 counted reviews, 0 up and 0 down votes. Full formula
Is Apollo.io a good ZoomInfo alternative?
Verified facts
4 of 4 verified
Free plan
Yes, no time limit
Checked Nov 8, 2026apollo.io(opens source in a new tab)
Database
240M+ contacts, 30M+ accounts
Checked Nov 8, 2026apollo.io(opens source in a new tab)
Integrations
Salesforce, HubSpot, Outreach and more
Checked Nov 8, 2026apollo.io(opens source in a new tab)
Credit rollover
No
Checked Nov 8, 2026apollo.io(opens source in a new tab)
2. Hunter
Best for: Small teams, marketers and link builders who need accurate work email addresses and simple cold email
Free plan + paidWeb, Browser extension
64.8
score / 100
Why switch from ZoomInfo
Focused on finding and verifying work emails by domain, with a free tier and far lower cost than a ZoomInfo contract.
Pros
Free plan with 50 credits a month and no credit card
Unlimited users on every plan
Finder, verifier and outreach sequences in one place
Browser extensions, Google Sheets add-on, API and MCP server
Cons
Email-focused: no phone number data like Lusha or Cognism
Monthly credits reset and don't roll over
Sequences are basic compared with dedicated sales engagement tools
Visit Hunter Details and reviews
How this score is calculated
Editorial fit ×0.387
Reviews ×0.363
Clicks (90 days) ×0.150
Freshness ×0.15100
Votes ×0.150
0 counted reviews, 0 up and 0 down votes. Full formula
Is Hunter a good ZoomInfo alternative?
Verified facts
8 of 8 verified
Free plan
Yes, 50 credits a month
Checked Nov 8, 2026hunter.io(opens source in a new tab)
Users
Unlimited on all plans
Checked Nov 8, 2026hunter.io(opens source in a new tab)
Credit rollover
No
Checked Nov 8, 2026hunter.io(opens source in a new tab)
Starting paid price
$49/month (Starter, monthly)
Checked Nov 8, 2026hunter.io(opens source in a new tab)
Compliance
GDPR & CCPA
Checked Nov 8, 2026hunter.io(opens source in a new tab)
Starting price
$49 a month, or $34 a month billed yearly (Starter)
Checked Nov 8, 2026hunter.io(opens source in a new tab)
Growth plan
$149 a month, or $104 a month billed yearly
Checked Nov 8, 2026hunter.io(opens source in a new tab)
Scale plan
$299 a month, or $209 a month billed yearly
Checked Nov 8, 2026hunter.io(opens source in a new tab)
3. Clay
Best for: RevOps and growth teams that want to build custom enrichment and prospecting workflows from many data sources
Free plan + paidWeb
61.8
score / 100
Why switch from ZoomInfo
Pulls contact and company data from many providers into one table, so you are not locked to a single database like ZoomInfo's.
Pros
Combines 150+ data providers so one tool can fill gaps another misses
AI research agent generates custom data points from the web
Free plan with unlimited seats and tables
Bring-your-own API keys skip data credit costs
Cons
Two usage meters (actions and data credits) make costs hard to predict
Phone enrichment and CRM integrations need paid tiers
Steep learning curve compared with simple contact lookup tools
Visit Clay Details and reviews
How this score is calculated
Editorial fit ×0.377
Reviews ×0.363
Clicks (90 days) ×0.150
Freshness ×0.15100
Votes ×0.150
0 counted reviews, 0 up and 0 down votes. Full formula
Is Clay a good ZoomInfo alternative?
Verified facts
8 of 8 verified
Free plan
Yes, 100 data credits and 500 actions/month
Checked Nov 8, 2026clay.com(opens source in a new tab)
Data providers
150+
Checked Nov 8, 2026clay.com(opens source in a new tab)
Seats
Unlimited on all plans
Checked Nov 8, 2026clay.com(opens source in a new tab)
Bring your own API keys
Yes
Checked Nov 8, 2026clay.com(opens source in a new tab)
Credit rollover
Data credits roll over (up to 2x monthly on Launch/Growth)
Checked Nov 8, 2026clay.com(opens source in a new tab)
Starting price
From $185 a month (Launch)
Checked Nov 8, 2026clay.com(opens source in a new tab)
Growth plan
From $495 a month
Checked Nov 8, 2026clay.com(opens source in a new tab)
Free trial
14 days
Checked Nov 8, 2026clay.com(opens source in a new tab)
4. Lusha
Best for: SDRs, recruiters and small sales teams who mainly need emails and phone numbers fast
Free plan + paidWeb, Browser extension
61.8
score / 100
Why switch from ZoomInfo
Lighter, credit-based tool that small teams can start on without a sales call.
Pros
Free plan with monthly credits
Clear credit costs per email and per phone number
Chrome extension, API and MCP access to the same data
Paid plans can be cancelled at any time
Cons
Phone numbers cost five times as many credits as emails
Free plan's 40 credits run out quickly
No built-in email sequencing like Apollo
Visit Lusha Details and reviews
How this score is calculated
Editorial fit ×0.377
Reviews ×0.363
Clicks (90 days) ×0.150
Freshness ×0.15100
Votes ×0.150
0 counted reviews, 0 up and 0 down votes. Full formula
Is Lusha a good ZoomInfo alternative?
Verified facts
4 of 4 verified
Free plan
40 credits per month
Checked Nov 8, 2026lusha.com(opens source in a new tab)
Email reveal
1 credit
Checked Nov 8, 2026lusha.com(opens source in a new tab)
Phone reveal
5 credits
Checked Nov 8, 2026lusha.com(opens source in a new tab)
Cancellation
Any time
Checked Nov 8, 2026lusha.com(opens source in a new tab)
5. 6sense
Best for: Mid-size and enterprise B2B teams running account-based programmes across sales and marketing
Free plan + paidWeb, Browser extension
38.6
score / 100
Why switch from ZoomInfo
Adds predictive buying-stage scoring and ABM advertising on top of contact data.
Pros
Combines website visitor identification, intent and predictive scoring
Ads, segments and sales alerts in one platform
Deep Salesforce and HubSpot integrations plus REST API
Cons
No public pricing; annual contracts through sales
Long setup before scores and segments become useful
Results depend on the quality of your CRM data
Visit 6sense Details and reviews
How this score is calculated
Editorial fit ×0.37
Reviews ×0.363
Clicks (90 days) ×0.150
Freshness ×0.1585
Votes ×0.150
0 counted reviews, 0 up and 0 down votes. Full formula
Is 6sense a good ZoomInfo alternative?
Verified facts
4 of 4 verified
Visitor identification
Matches anonymous visitors to companies
Checked Nov 8, 2026support.6sense.com(opens source in a new tab)
Predictive scoring
Yes
Checked Nov 8, 2026support.6sense.com(opens source in a new tab)
API
REST API
Checked Nov 8, 2026support.6sense.com(opens source in a new tab)
AI email
Yes
Checked Nov 8, 2026support.6sense.com(opens source in a new tab)

Quick comparison

1. Apollo.ioTop pick

Pros

Cons

Verified facts

2. Hunter

Pros

Cons

Verified facts

3. Clay

Pros

Cons

Verified facts

4. Lusha

Pros

Cons

Verified facts

5. 6sense

Pros

Cons

Verified facts