Leadspace Sidekick Chrome Extension

The contact data you need. The AI that turns it into pipeline.

Enterprise B2B intelligence on LinkedIn. Free to start.

Leadspace Sidekick Chrome Extension

2.5-10

2.5-10

x

x

Less expensive than
ZoomInfo & Apollo

10-15

10-15

x

x

Faster time-per-lead vs.

manual research

AI

AI

Fit scoring, outreach drafting & buying group intelligence built in

100

100

+

+

Technology categories in the data graph

What Sidekick Does

Three things no other tool does at this price.

Explore each one. Every capability is powered by 800M+ buyer identities — the same data graph used by Microsoft, Nvidia, and Salesforce.

The Foundation — Verified contact data, revealed instantly

Emails, direct dials, firmographics, tech stack. One click.

● Verified emails & direct phone numbers

Revealed on any LinkedIn profile

● Company firmographics & org hierarchy

Size, revenue, industry, parent and subsidiaries

● Technology stack 

— 100+ categories, continuously updated

— not batch-refreshed monthly

● ICP fit score in plain language 

Know instantly if they're worth your time, and exactly why

● One-click CRM push

Salesforce, HubSpot, Microsoft Dynamics. Always free.

● ICP fit score in plain language 

Know instantly if they're worth your time, and exactly why

● One-click CRM push

Salesforce, HubSpot, Microsoft Dynamics. Always free.

The Difference — AI that works the whole sales workflow

Fit scoring, outreach drafting, buying committee mapping, job change detection.

● Fit Scoring

Instant score against your Target Audience with a plain-language explanation.

● Outreach Drafting

Cold emails, LinkedIn messages, call scripts — personalised to the contact's profile.

● Buying Committee

Map Economic Buyer, Champion, Technical Evaluator, Procurement, Exec Sponsor. Gaps flagged.

● Account Research

Company briefing, recent signals, contact summary — all on demand, in context.

● Job Change Detection

Contact changed roles? Sidekick surfaces their new details and a suggested outreach angle.

● Ask Anything

Free-form AI conversation grounded in Leadspace data. No forms. No filters.

● Account Research

Company briefing, recent signals, contact summary — all on demand, in context.

● Job Change Detection

Contact changed roles? Sidekick surfaces their new details and a suggested outreach angle.

● Ask Anything

Free-form AI conversation grounded in Leadspace data. No forms. No filters.

The Multiplier — Find more people just like your best ones

LookaLikes turns one perfect contact into a full pipeline.

● Point to any contact who fits your Target Audience perfectly

● Sidekick searches 800M+ identities for people with the same role profile, company type, and fit signals

● Scored by role, function, seniority & company fit

● Verified contact data ready to reveal — add to list or push to CRM in one click

● Scored by role, function, seniority & company fit

● Verified contact data ready to reveal — add to list or push to CRM in one click

Learn More About Sidekick
Evaluating ZoomInfo alternatives? Go beyond contact volume. See the architecture, identity resolution, and buying-group criteria enterprise GTM teams need.

Sidekick

Article

ZoomInfo Alternatives for Enterprise GTM Teams: What to Evaluate Beyond Contact Volume

Your contact database is not your data strategy. Yet most enterprise renewal conversations treat them as the same thing.


When your ZoomInfo contract comes up for review, the questions usually center on seat counts, credit limits, and record volume. Those questions miss the point. The real issue sits deeper in your stack, where records get matched, scored, routed, and pushed into automation.


If you lead RevOps, marketing operations, or sales operations at an enterprise, you already know the symptoms. Duplicate accounts across regions. Leads that never connect to the right buying group. Scoring models trained on stale attributes. Territory rules that fire against the wrong hierarchy.


This guide walks through how to evaluate Zoominfo alternatives against the architecture you operate, not the demo you sit through.

See the B2B email bounce rate benchmark you should hit, why your numbers drift, and how fixing data at the source keeps deliverability healthy.

Sidekick

Article

B2B Email Bounce Rate Benchmarks: What Good Looks Like and Why Yours Is Slipping

Your email program lives or dies on deliverability. Bounce rate is the earliest signal that something upstream has broken.

Most revenue teams treat bounces as an email problem. They are a data problem. Every hard bounce traces back to a record that entered your system stale, unverified, or duplicated.

This guide breaks down the b2b email bounce rate benchmark you should hold your team to. It also explains the architectural reasons your numbers drift, and what to fix beneath the campaign layer.

Sidekick

Article

What Is a Golden Record in a B2B CRM?

Your CRM holds thousands of versions of the truth. One account exists five times. One buyer shows three job titles. One domain maps to four different company names.


That fragmentation breaks everything downstream. Routing misfires. Scoring models train on noise. Territory assignments overlap. Forecasts drift from reality.


A golden record fixes the root cause. It gives every account, contact, and buying group one authoritative profile that your systems trust. When you understand how a golden record CRM strategy works, you stop patching symptoms and start rebuilding the data layer beneath your revenue stack.

Learn how prospect fit scoring at the contact level helps reps prioritize the right buyers, not the wrong accounts.

Sidekick

Article

How to Score Prospect Fit at the Rep Level, Not Just the Account Level

Your CRM says the account is a fit. The firmographics line up. Revenue, industry, headcount, tech stack. Everything checks out on paper. So you spend two weeks working it. You send sequences, leave voicemails, and chase down contacts across the org chart. Then the deal stalls before it starts. Nobody on the buying side had budget authority. Nobody matched your ICP at the contact level. The account scored well. The people inside it did not.

This is where most sales teams lose hours they never get back. Account-level scoring tells you where to look. Prospect fit scoring tells you who to talk to when you get there. Without both, you prospect blind half the time.

How We Compare

More intelligence. At a fraction of the cost.

See how Sidekick stacks up against ZoomInfo, Apollo, and Lusha across every capability that matters.

Full

Partial

None

Sidekick

ZoomInfo

Apollo

Lusha

PRICING

$0

Freemium — no CC

Paid from $49 / user per mo

No free tier

From ~$15K / year

Limited free tier

Paid from $49 / user per mo

No free tier

Paid from $49 / user per mo

CONTACT DATA

Verified emails

Direct / mobile phone

Firmographics & tech stack

Free tier

AI INTELLIGENCE

AI fit scoring

AI outreach drafting

Buying committee mapping

LookaLikes discovery

Job change detection

CRM & WORKFLOW

CRM & sales tool push

Salesforce, HubSpot, Outreach

Works on LinkedIn

DATA FOUNDATION

Identity graph size

800M+

270M+

Compiled DB

50M+

Continuously updated

Forrester recognized

Competitor data based on publicly available information as of 2026.

Pricing

Affordable outcomes. Not just affordable software.

Verified emails, direct dials, AI fit scoring, buying committee mapping, and AI outreach — all on LinkedIn. ZoomInfo, Apollo, and Lusha charge enterprise prices for what Sidekick delivers at 2.5–10× less.

FAQ

Common Questions

What browsers does Sidekick work on?

How do credits work?

What makes Sidekick different from Apollo or ZoomInfo?'

What is LookaLikes?

Does Sidekick integrate with my CRM?

How is the buying committee map built?