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Free 6sense alternatives: 3 apps ranked by verified data

Facts checked Nov 8, 2026AppBreakup editorialHow we rank

3 of the 5 6sense alternatives we track can be used for free (free, open source, or with a free plan). Apollo.io, Clay and Lusha rank highest, with facts last verified Nov 8, 2026.

Quick comparison

#AppPricingVerified priceOpen sourcePlatformsVerified factsScore
1Apollo.io logoApollo.ioFree plan + paid—NoWeb, Browser extension4 of 452.6
2Clay logoClayFree plan + paidFrom $185 a month (Launch)NoWeb8 of 851.2
3Lusha logoLushaFree plan + paid—NoWeb, Browser extension4 of 450.0
  1. Apollo.io logo

    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

    52.6

    score / 100

    Why switch from 6sense

    Self-serve prospecting with contact data, intent filters and email sequences at a far lower entry price.

    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 Details and reviews
    How this score is calculated
    Editorial fit ×0.346
    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 6sense 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. Clay logo

    2. Clay

    Best for: RevOps and growth teams that want to build custom enrichment and prospecting workflows from many data sources

    Free plan + paidWeb

    51.2

    score / 100

    Why switch from 6sense

    Builds your own account signals by combining many data providers in a spreadsheet-style enrichment workflow.

    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 ×0.341
    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 6sense 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)
  3. Lusha logo

    3. Lusha

    Best for: SDRs, recruiters and small sales teams who mainly need emails and phone numbers fast

    Free plan + paidWeb, Browser extension

    50.0

    score / 100

    Why switch from 6sense

    Simpler contact and company data with intent signals and a free tier, without an enterprise ABM contract.

    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 ×0.338
    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 6sense 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)