Apollo.io: Free B2B Phone Number & Email Finder
by ZenLeads Inc. · 1,000,000 usersGood signsNothing in the store listing stands out.
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Used by 1,000,000 peopleA large user base means problems tend to get noticed quickly.
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Actively maintainedLast updated October 22, 2026.
Who makes it
- Developer
- ZenLeads Inc.
- Address
- 340 S Lemon Ave #4750 Walnut, CA 91789 US
- support@apollo.io
- Website
- apollo.io
- Users
- 1,000,000
- Version
- 17.2.1
- Last updated
- October 22, 2026
What this page can't see
A store listing doesn't show what an extension can access on your computer, and it can't warn you later. Extensions get sold, and the next silent update can change everything.
Extension Guardian watches the extensions you have installed and warns you when one changes owner, gains new permissions or disappears from the store. Free, open source, no account.
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