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Best alternatives to CxBlock (2026)

5 Chrome extensions that do a similar job to CxBlock, closest first. Each shows real store users, its rating, how recently it was updated and how many permissions it asks for.

CxBlock: reviews, users and permissionsBest Workflow & Planning extensions

CxBlock today

≈1K users5.0★ from 2 ratingsNot updated for 3+ years6 permissions

CxBlock alternatives, compared

  1. 1

    AI Leak Block

    Prevent AI data leaks by detecting personal AI accounts and redirecting to corporate-approved tools.

    ≈10K users4.0★ from 1 ratingUpdated 3 weeks ago4 permissions
    • About 10× more users than CxBlock
    • Updated more recently
    • Asks for fewer permissions (4 vs 6)
    • Listed under Privacy & Security
    AI Leak Block alternativesCompare side by side
  2. 2

    Block Page Assistant

    If using DNS based web filtering, this extension will improve the user experience for block pages when using HTTPS.

    ≈3K users3.7★ from 3 ratingsNot updated for 2+ years7 permissions
    • About 3.0× more users than CxBlock
    • Updated more recently
    • Asks for more permissions (7 vs 6)
    Compare side by side
  3. 3

    IMTLazarusv3

    IMTLazarus's remote filtering agent.

    ≈100K users1.2★ from 381 ratingsUpdated 9 days ago22 permissions
    • About 100× more users than CxBlock
    • Updated more recently
    • Asks for more permissions (22 vs 6)
    Compare side by side
  4. 4

    Assessment Lock (Vretta)

    Assessment Security extension for e-Assessments running on ChromeOS

    ≈400K users2.1★ from 33 ratingsUpdated 5 weeks ago7 permissions
    • About 400× more users than CxBlock
    • Updated more recently
    • Asks for more permissions (7 vs 6)
    • Listed under Education
    Assessment Lock (Vretta) alternativesCompare side by side
  5. 5

    InterCLASS Filtering Service

    Web filtering service for Chromebook

    ≈700K users1.8★ from 87 ratingsUpdated 4 weeks ago16 permissions
    • About 700× more users than CxBlock
    • Updated more recently
    • Asks for more permissions (16 vs 6)
    • Listed under Accessibility
    Compare side by side

CxBlock alternatives: questions

What is the best alternative to CxBlock?

By users, the most popular alternative is InterCLASS Filtering Service with ≈700K users and a 1.8-star rating. The closest match by what it does is AI Leak Block.

Which CxBlock alternative has the best rating?

InterCLASS Filtering Service has the highest rating of these alternatives with 50+ ratings: 1.8 out of 5 from 87 ratings.

Is there a CxBlock alternative that asks for fewer permissions?

AI Leak Block asks for 4 permissions, against 6 for CxBlock.

How many alternatives to CxBlock are there?

We list 5 close alternatives to CxBlock on the Chrome Web Store, picked by what they do and ranked by how close they are.

Users and ratings are the figures shown on the Chrome Web Store, re-checked continuously. Alternatives are matched on name, description, category and topic. Browse best-of lists by niche.