Open Source Security & Monitoring Tools

Alternative toMaltego

Self-hosted graph tool for OSINT and cybersecurity investigations

• 9,878 GitHub stars
• Apache-2.0Licence Apache-2.0

Alternative toGranola

Local-first AI meeting notetaker with transcription

• 9,539 GitHub stars
• MITLicence MIT

Alternative toPerplexity AI

Your AI research assistant, fully local and encrypted.

• 9,372 GitHub stars
• MITLicence MIT
• #LLM

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 toNotion

Local-first knowledge OS with E2E encryption and P2P sync

• 8,949 GitHub stars
• #No Code

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 toTeamSpeak

Free open source low-latency voice chat for gaming teams

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

Alternative toDatadog

Instant observability with no-code setup.

• 7,977 GitHub stars
• Apache-2.0Licence Apache-2.0
• #Monitoring