Security Open Source Tools

Alternative toIncident.io

Accelerate incident resolution with intelligent alert investigation

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

Alternative toWWhatsApp

A secure messaging app focused on privacy and user experience.

• 10,742 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Chat

Alternative toPortkey

Open-source AI gateway with 23+ providers, failover, and MCP support.

• 8,975 GitHub stars
• Apache-2.0Licence Apache-2.0
• #LLM

Alternative toDropbox

Self-hosted file sharing with data sovereignty for teams and enterprises.

• 8,837 GitHub stars
• AGPL-3.0Licence AGPL-3.0

Alternative toHashiCorp Vault

Open source secret management governed by the Linux Foundation

• 8,619 GitHub stars
• MPL-2.0Licence MPL-2.0

Alternative toBrave Browser

Firefox fork with advanced privacy controls and UI customization

• 8,452 GitHub stars
• MPL-2.0Licence MPL-2.0

Alternative toTailscale

Encrypted tunnels between machines, no account or IP needed

• 8,432 GitHub stars
• BSD-3-ClauseLicence BSD-3-Clause

Alternative toAmazon RDS for MySQL

Open source MySQL-compatible relational database server

• 8,393 GitHub stars
• GPL-2.0Licence GPL-2.0
• #Database

Alternative toTeamSpeak

Free open source low-latency voice chat for gaming teams

• 8,351 GitHub stars
• BSD-2-ClauseLicence BSD-2-Clause
• #Chat

Alternative toEvernote

End-to-end encrypted notes with 100+ extensions and themes

• 6,672 GitHub stars
• AGPL-3.0Licence AGPL-3.0