Leadspace Sidekick Chrome Extension

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

Enterprise B2B intelligence on LinkedIn. Free to start.

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
Compare the best linkedin prospecting tools for SDRs. Find verified contacts, score accounts, and map buying committees without the cost.

Sidekick

Article

The best LinkedIn prospecting tools for SDRs

You open a profile. The person looks like a fit. Now what? Most SDRs copy the name into a spreadsheet, run a search in whatever data tool their company bought, and hope the email comes back clean. That process costs you 20 minutes per prospect on a good day.


The tools on this list cut that time down. Some of them pull contact data. Others score accounts, map buying committees, or surface lookalike targets. Each one does something different, and the right stack depends on what slows you down most.


This guide walks through the strongest linkedin prospecting tools available to SDRs right now, what each one actually does, and where each one falls short.

Find direct dials from linkedin profiles for free with Sidekick. Verified mobile numbers, no database required.

Sidekick

Article

How to Find Direct Dials From a LinkedIn Profile Without Paying for a Sales Database

You found the right contact. The title matches. The company fits your ICP. Now you need a phone number that works. Every outbound rep hits this wall daily. The profile is right there, but the direct dial is locked behind a paywall or buried in a stale database. You need a faster way to find direct dials from linkedin profiles without switching tabs or spending hundreds a month on another tool.


Here is exactly how to do it, step by step, for free.

See real b2b contact data accuracy benchmarks for email and direct dials. Know what good looks like.

Sidekick

Article

How Accurate Is B2B Contact Data, Really? Email and Direct-Dial Benchmarks

You pull a list of 200 contacts from your database. You write personalized emails. You block two hours for cold calls. Then half your emails bounce and most of your dials hit dead ends. That afternoon is gone, and your pipeline looks the same as it did at 9 a.m.


This is the real cost of bad data. Not an abstract line item on a spreadsheet. Lost hours, missed quota, wasted effort. If you prospect for a living, b2b contact data accuracy is the single biggest factor separating productive days from empty ones.


So how accurate is the data you rely on? Here are the benchmarks that matter, what the numbers tell you, and what to do about it.

Learn how to prospect on a company website and turn every site visit into verified contacts and pipeline.

Sidekick

Article

How to Prospect on a Company Website (Not Just Professional Profiles)

Most reps prospect in one place. They open professional profiles, scroll through org charts, and send connection requests. It works. But it leaves a massive source of qualified prospects sitting untouched: the company website itself.


Every target account has a website. That website tells you who leads the team, what they sell, how they position their product, and where they operate. When you prospect on a company website, you get context that a profile page never gives you. The problem has always been turning that context into contact data fast enough to act on it.


That problem is solved now. Here is how to prospect directly from company websites and turn every site visit into a pipeline opportunity.

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?