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Free Demandbase alternatives: 3 apps ranked by verified data

Facts checked Nov 8, 2026AppBreakup editorialHow we rank

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

Quick comparison

#AppPricingVerified priceOpen sourcePlatformsVerified factsScore
16sense logo6senseFree plan + paid—NoWeb, Browser extension4 of 466.5
2HubSpot Marketing Hub logoHubSpot Marketing HubFree plan + paidFrom $890 a month (3 seats included)NoWeb, iOS, Android6 of 652.6
3Apollo.io logoApollo.ioFree plan + paid—NoWeb, Browser extension4 of 452.6
  1. 6sense logo

    1. 6senseTop pick

    Best for: Mid-size and enterprise B2B teams running account-based programmes across sales and marketing

    Free plan + paidWeb, Browser extension

    66.5

    score / 100

    Why switch from Demandbase

    The main rival ABM platform, with AI-predicted buying stages and intent data to prioritise accounts.

    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 ×0.3100
    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 Demandbase 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)
  2. HubSpot Marketing Hub logo

    2. HubSpot Marketing Hub

    Best for: Companies that want marketing, sales and service on one CRM platform

    Free plan + paidWeb, iOS, Android

    52.6

    score / 100

    Why switch from Demandbase

    Includes account-based marketing tools inside a CRM-connected marketing suite, cheaper for mid-sized teams.

    Pros

    • Email, forms, ads and automation on one shared CRM
    • Strong attribution and reporting
    • Free tools to start

    Cons

    • Automated workflows need the costly Professional tier
    • Pricing grows with marketing contacts and seats
    • More than a pure email tool for small senders
    Visit HubSpot Marketing Hub 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 HubSpot Marketing Hub a good Demandbase alternative?

    Verified facts

    6 of 6 verified
    Free trial
    14 days
    Checked Nov 8, 2026hubspot.com(opens source in a new tab)
    Automated emails
    Professional or Enterprise only
    Checked Nov 8, 2026knowledge.hubspot.com(opens source in a new tab)
    AI writing
    AI subject lines and email copy
    Checked Nov 8, 2026hubspot.com(opens source in a new tab)
    Professional plan
    From $890 a month (3 seats included)
    Checked Nov 8, 2026hubspot.com(opens source in a new tab)
    Enterprise plan
    From $3,600 a month (5 seats included)
    Checked Nov 8, 2026hubspot.com(opens source in a new tab)
    Free plan
    Yes, no credit card required
    Checked Nov 8, 2026hubspot.com(opens source in a new tab)
  3. Apollo.io logo

    3. Apollo.io

    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 Demandbase

    Self-serve prospecting with intent filters at a fraction of the price for smaller teams.

    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 Demandbase 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)