Browser extensions starting with O

244 browser extension security reviews, listed by name.

  1. Office - Enable Copy and Paste

    Microsoft Corporation

    Clean

    Enables cut, copy, and paste menus in Office on the web.

  2. Okta Browser Plugin

    Okta, Inc.

    Clean

    Okta Browser Plugin provides enterprise SSO and sends opt-in usage telemetry to Pendo analytics.

  3. OpenText Content Server

    OpenText Corporation

    Medium

    Content Server Browser Web Extension exposes two unscoped bridges that allow any webpage to invoke OpenText native desktop applications.

  4. OneTab

    OneTab

    Clean

    Converts open tabs into a restorable list to reduce the number of active browser tabs.

  5. OKX Wallet

    OKX

    Clean

    OKX Wallet sends every tab navigation URL to an OKX anti-phishing API along with persistent device fingerprint identifiers.

  6. Obsidian Web Clipper

    Obsidian

    Clean

    Save web pages, selections, highlights, and metadata to an Obsidian vault as Markdown.

  7. OneLogin

    OneLogin, Inc.

    Low

    OneLogin for Google Chrome fetches and executes JavaScript functions from app.onelogin.com on every website the user visits.

  8. Open Multiple URLs

    tp

    Clean

    Opens a pasted list of website addresses in separate tabs.

  9. OneDrive

    Microsoft Corporation

    Clean

    Access, share, and sync OneDrive files across your devices and browser.

  10. OceanHero

    OceanHero GmbH · Art & Design

    Medium

    Turns web searches and new tabs into support for ocean plastic cleanup projects.

  11. OpenDyslexic for Chrome

    OpenDyslexic · Education

    Clean

    Replaces webpage fonts with OpenDyslexic to make online text easier to read.

  12. OP Auto Clicker

    mousetool

    Clean

    Automates mouse clicks at the cursor or a preset location on supported web pages.

  13. Online Voice Recorder

    123apps.com

    Clean

    Records sound from your microphone, then lets you trim and save the recording to your computer.

  14. Open URLs

    vpChar · Workflow & Planning

    Clean

    Open multiple URLs at once in separate tabs or windows.

  15. Open in VLC™ media player

    yokris.dev · Entertainment

    Clean

    This extension sends selected online video and audio links to VLC media player.

  16. OCR Image Reader

    brian.girko

    Clean

    This extension captures a selected screen region and runs OCR to extract text from it.

  17. Octotree

    Ovity

    Clean

    Octotree renders its account password field as plain text in its GitHub sidebar login form.

  18. Omega Ad Blocker

    adblockeromega · Tools

    Clean

    Omega Ad Blocker fetches remote rules that can inject scriptlets and CSS across websites.

  19. Omnibug

    Philip Lawrence

    Clean

    Omnibug captures matching marketing-request URLs and POST data for tabs where its DevTools panel is open.

  20. Open SEO Stats

    OpenAdminTools.com

    Low

    Open SEO Stats sends the active tab's host and SEO history to history.openadmintools.com when the popup opens.

  21. Open incognito tab

    cswprodev · Privacy & Security

    Medium

    Open incognito tab sends feedback messages and the active tab URL to Telegram.

  22. Operata

    Operata

    Clean

    Collects call, system, network, and headset diagnostics for cloud contact center monitoring.

  23. Browsing Protection by F-Secure

    F-Secure

    Clean

    Browsing Protection by F-Secure sends every visited URL and open tab list to a locally-installed F-Secure native host for real-time scanning.

  24. OneTab

    OneTab Team

    Clean

    OneTab sends saved tab domains to Google's favicon service when it renders tab icons in the OneTab interface.

  25. Open Adblocker

    openadblockerdeveloper · Workflow & Planning

    High
  26. Odoo Debug

    Droggol · Developer Tools

    Clean

    Toggle Odoo debug mode from the browser toolbar or keyboard shortcuts.

  27. Old Layout for Facebook

    ModernKit.one · Social & Communication

    Clean

    This extension changes the new Facebook layout to use older Facebook-style colors.

  28. Outreach Everywhere

    Outreach

    Clean

    Adds Outreach communication tools for Gmail and Salesforce calling and emailing.

  29. OneClick Cleaner

    Smart Software

    Clean

    Cleans Chrome browsing data such as cache, history, downloads list, cookies, form data, and saved passwords.

  30. Onelog

    Info Technology Supply Ltd

    High
  31. Online speech recognition

    Simple Seo Solutions · Accessibility

    Clean

    This extension adds speech input to web text fields and clipboard workflows.

  32. ORGanizer for Salesforce

    Enrico Murru

    Clean

    Stores Salesforce account details and helps identify and open Salesforce org tabs quickly.

  33. OfficeWork

    RedcoolMedia · Workflow & Planning

    Critical
  34. OmniSearch

    omnisearch

    Clean

    This extension redirects searches from the browser omnibox to Yahoo Search.

  35. Online Photo Tool

    saveimageastype

    Clean

    Online Photo Tool maintains a hidden pinned Google tab to silently perform keyword searches and click target URLs on behalf of paying clients.

  36. Open site in removepaywall

    ImageVars

    Clean

    Open site in removepaywall sends the current tab's full URL to removepaywall.com when you click its menu item or toolbar icon.

  37. Otto: Pomodoro timer & Website Blocker. Block sites, Focus mindfully

    J. Benjamin · Workflow & Planning

    Clean

    This extension provides a Pomodoro focus timer with website blocking during focus sessions or scheduled hours.

  38. ordbogen.com

    Ordbogen A/S · Education

    Clean

    Look up selected words on ordbogen.com from Chrome.

  39. Okta Browser Plugin

    Okta Inc.

    Clean

    Okta Browser Plugin sends analytics telemetry to third-party services, gated behind org settings and user consent.

  40. Off The Record History

    dutiyesh · Workflow & Planning

    Clean

    Off The Record History sends a persistent extension UID and usage events to Google Analytics.

  41. Online Privacy

    Joan Long

    Clean

    This extension manages privacy-related browser settings and changes default search to privacyonlinesearch.com.

  42. OpenOffice Writer

    officeonlinesystems · Workflow & Planning

    Critical
  43. OptimAI Lite Node

    OptimAI Network

    Medium

    OptimAI Lite Node collects device fingerprints and reports uptime to api.optimai.network every 10–15 minutes in exchange for passive-income rewards.

  44. Orbital Daggers

    Onionfist Studio

    High

    Orbital Daggers injects server-controlled HTML into its popup from fn.onionfist.com and exposes extension storage to onionfist.com pages.

  45. Outlier

    Remotask

    Clean

    Outlier Assistant helps contributors complete AI labeling tasks on Google DataCompute by sending task data and queue events to app.outlier.ai.

  46. Outsurf

    Peter Molacek

    Low

    Outsurf downloads shortcut rules from outsurf.net and redirects matching Google searches to configured destinations.

  47. OP_WALLET

    opnet

    Medium

    OP_WALLET sends a persistent device ID and Bitcoin wallet address to its servers on every browser start.

  48. OceanHero

    OceanHero GmbH

    Medium

    OceanHero reads signed-in Google accounts and top-visited sites, and forwards your user ID to an ad network on every new tab.

  49. Omnimed-QHR authenticator

    developpementOmnimed

    Low

    Omnimed-QHR authenticator forwards messages from Omnimed web pages to a local smartcard signing app without validating the request.

  50. Open In IINA

    lhc70000

    Clean

    Open links, videos, and audio from Chrome in the IINA media player.

  51. Open in Foxit™ Reader

    lunu.bounir

    Medium

    Open in Foxit™ Reader passes web-origin PDF URLs to a native shell command without sanitization when a custom Foxit path is configured.

  52. OpenShot

    officeonlinesystems

    High
  53. OKIOCAM Live

    https://www.okiolabs.com

    Medium

    OKIOCAM Live sets uploaded Google Drive files to public 'anyone with link' sharing without user confirmation.

  54. OWASP PTK

    pentestkit.co.uk · Developer Tools

    Medium

    OWASP Penetration Testing Kit accepts page bridge messages that send saved DAST scan results to the configured PTK portal.

  55. Oalur - Amazon Products&Traffic Research Tool

    itsupport

    High
  56. ObservePoint Debugger

    ObservePoint · Developer Tools

    Clean

    ObservePoint Debugger captures the URL, query string and POST body of requests on tabs you debug and sends them to ObservePoint.

  57. Omnidoc, la plateforme de téléexpertise

    pierre

    Clean

    Omnidoc relays commands from omnidoc.fr pages to a local native host without a command allowlist.

  58. One-click image downloader - Grabit

    Grabit Team · Art & Design

    Low

    One-click image downloader - Grabit sends opt-in usage analytics, including domain names, to its vendor backend tied to a persistent device identifier.

  59. Open Access Button

    Open Access Button

    Clean

    Finds legal access options for research articles when you cannot access them.

  60. one sec

    riedel.wtf GmbH

    Low

    one sec intercepts tab navigation to configured websites and displays a friction screen before the user can continue.