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Best 3 A/B Testing tools in 2026

"Expandi", "Leadpages", "PostHog" are some of the A/B Testing tools we track today, each verified for real availability and pricing.

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Expandi logo
Expandi·expandi.io

Cloud-based LinkedIn outreach automation for connection requests, behavior-based smart sequences, and omnichannel follow-ups, with account-safety tooling and multi-account workspaces.

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What is Expandi?

Expandi is a LinkedIn automation and outreach tool built by LeadExpress B.V. that helps sales teams, agencies, and recruiters scale connection requests (300+ per week), follow-ups, and meeting booking. Its Smart Campaigns builder uses branching conditions so each sequence adapts to a prospect behavior (accepts, replies, engagement), and omnichannel follow-up extends across email and LinkedIn with optional personalized video and GIF messaging. For teams it offers multi-account workspaces, role and permission management, and white-labeling on the agency plan. The company emphasizes account safety with a dedicated country-based IP per account, automatic warm-up, and recommended daily limits, and it supports consented prospect data, native CRM integrations, webhooks, and campaign A/B testing. Its online reputation is strong, with multiple review badges on G2.

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Expandi's Core Features

  • LinkedIn connection requests, follow-ups, and InMail within recommended daily limits
  • Smart Campaigns with drag-and-drop branching conditions based on prospect behavior
  • Omnichannel follow-up across LinkedIn and email from any provider
  • Campaign A/B testing and unlimited campaigns
  • Multi-account workspaces with roles, permissions, and a unified dashboard
  • White-labeling on the agency plan

Pros

  • + Cloud-based (not a browser extension) with a dedicated IP per account
  • + Strong agency and team features: workspaces, white-label, granular permissions
  • + Behavior-based if-then branching adapts outreach in real time
  • + Well-reviewed on G2 with multiple review badges

Cons

  • – Not an official LinkedIn product, so use carries inherent platform-account risk
  • – Effective volume is capped by LinkedIn connection limits regardless of tool features
  • – Video and GIF personalization is a paid add-on

Best suited for

SDR and sales teams, Lead-generation agencies, Recruiters

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Leadpages logo
Leadpages·leadpages.com

AI landing page builder that turns a campaign prompt into a live, on-brand page in about 60 seconds, then optimizes it with built-in A/B testing, Smart Traffic, and heatmaps.

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What is Leadpages?

Leadpages is an AI landing page builder and conversion platform. Describe a campaign and it generates a branded page (headline, layout, form, images) in about 60 seconds, then hands over a drag-and-drop editor with your brand kit applied. Beyond single pages it builds full marketing websites and blogs, embeds Stripe checkout for e-commerce, and sends leads to HubSpot, Salesforce, Mailchimp, Klaviyo, and 200+ other tools. Its differentiator is post-publish optimization: continuous A/B testing, Smart Traffic that routes each visitor to the best-converting variant, click and scroll heatmaps, and visitor personalization. The company reports 400K+ customers since 2012, 9.1M+ leads captured monthly, and no traffic caps on any plan.

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Leadpages's Core Features

  • AI page creation from a campaign prompt to a live branded page in about 60 seconds
  • Drag-and-drop editor with an auto-applied brand kit
  • Built-in A/B testing, Smart Traffic visitor routing, and click/scroll heatmaps
  • 200+ integrations (HubSpot, Salesforce, Mailchimp, Klaviyo, Google Ads, Meta, Stripe, Shopify, Zapier)
  • Marketing websites and blogs on custom domains with free SSL and fast median load times
  • Embedded Stripe checkout for products, subscriptions, and digital goods

Pros

  • + All-in-one landing page, marketing website, and lead-capture suite
  • + No traffic caps and unlimited pages on every plan
  • + Continuous self-optimization via automated A/B testing
  • + Deep integration ecosystem including major CRMs and ad platforms

Cons

  • – Heatmaps, Smart Traffic, and personalization are gated to the Optimize plan and up
  • – Web-based only; no native mobile or desktop apps
  • – Headline conversion-lift figures are illustrative marketing claims, not guarantees

Best suited for

Small business owners and coaches, Paid-ad and performance marketers, Agencies building client landing pages

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PostHog logo
PostHog·posthog.com

Open-source product analytics, session replay, and experiments.

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What is PostHog?

PostHog is a product analytics platform offering event analytics, session replay, feature flags, and A/B testing. Its open-source community edition can be self-hosted, and the cloud offering includes a generous free tier.

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PostHog's Core Features

  • Event analytics
  • Session replay
  • Feature flags
  • A/B testing
  • Data warehouses
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