Open Source Security & Monitoring Tools

Alternative toAuth0

Open source identity platform with SSO, RBAC, and multi-tenancy

• 15,354 GitHub stars
• AGPL-3.0Licence AGPL-3.0

Alternative toCloudflare

Community-powered threat detection and IP blocklist

• 15,226 GitHub stars
• MITLicence MIT
• #Security

Alternative toEvernote

End-to-end encrypted open source note-taking, cross-platform

• 14,803 GitHub stars
• GPL-3.0Licence GPL-3.0

Alternative toAuth0

Multi-tenant auth platform with SSO, RBAC, and social login

• 14,731 GitHub stars
• MPL-2.0Licence MPL-2.0

Alternative toSlack

Secure team chat built on the Matrix open protocol

• 13,601 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Chat

Alternative toGoogle Chrome

Open source browser from Mozilla with privacy by default

• 13,537 GitHub stars

Alternative toGrok Bot

Open source security scanner for AI agent deployments

• 12,668 GitHub stars
• Apache-2.0Licence Apache-2.0
• #AI Agents

Alternative toUptimeRobot

Check endpoints on a schedule and auto-publish a status page

• 12,365 GitHub stars
• Apache-2.0Licence Apache-2.0
• #Monitoring

Alternative toIncident.io

Accelerate incident resolution with intelligent alert investigation

• 12,271 GitHub stars
• Apache-2.0Licence Apache-2.0

Alternative toiMazing

Search and download IPA files for iOS, iPadOS, tvOS, and visionOS

• 11,806 GitHub stars
• MITLicence MIT