Best Open Source Security & Monitoring Tools in 2026

Donut Browser

Marketing & Growth Security & Monitoring Web & App Development

Anti-detect browser with isolated profiles and zero telemetry

stars 2Klicense AGPL-3.0lang Rust

Web Browsers Privacy Tools Security+4

Stakpak

IT Management Web & App Development Security & Monitoring

Open source agent that automates app deployment and monitoring

stars 1.4Klicense Apache-2.0lang Rust

Infrastructure as Code Developer Tools DevOps Tools+3

Jentic

AI & Machine Learning Web & App Development Security & Monitoring

Build the agentic knowledge layer connecting AI to APIs

stars 224license CC0-1.0

AI Agents LLMOps Developer Tools+4

Breadcrumb

Security & Monitoring IT Management AI & Machine Learning

Open source LLM tracing and monitoring for AI agents

stars 38license AGPL-3.0lang TypeScript

Observability DevOps Tools LLM+2

AlphaClaw

Security & Monitoring IT Management Data & Analytics

Deploy and manage OpenClaw AI agents at fleet scale

stars 1.2Klicense MITlang JavaScript

Developer Tools Monitoring Self Hosted+2

OpenObserve

Data & Analytics Security & Monitoring IT Management

Self-hosted observability for logs, metrics, and traces

stars 18.6Klicense AGPL-3.0lang TypeScript

Monitoring Self Hosted Developer Tools+3

ClawSecure

Security & Monitoring AI & Machine Learning Web & App Development

Free OpenClaw security scanner with OWASP coverage

stars 22license MITlang HTML

AI Agents Security Developer Tools+3

IronClaw

AI & Machine Learning Security & Monitoring Web & App Development

Open source security scanner for AI agent deployments

stars 12Klicense Apache-2.0lang Rust

AI Agents Security Developer Tools+1

NothingHere

Security & Monitoring Business & Productivity

macOS app that hides all windows and mutes sound instantly

stars 45license GPL-3.0lang Swift

Privacy Tools macOS

Nexion

IT Management Web & App Development Security & Monitoring

Web3 SSH manager that replaces passwords with crypto keys

stars 16license NOASSERTIONlang TypeScript

Web3 Server Management Authentication+5

Hyprnote

Business & Productivity Communication & Collaboration AI & Machine Learning+1

Local-first AI meeting notetaker with transcription

stars 8.3Klicense GPL-3.0lang Rust

Note-taking Apps AI Agents LLM+6

bitchat

Communication & Collaboration Security & Monitoring

Peer-to-peer encrypted chat over Bluetooth mesh network

stars 25.8Klicense Unlicenselang Swift

Chat Security Self Hosted

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Donut Browser

Stakpak

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Breadcrumb

AlphaClaw

OpenObserve

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IronClaw

NothingHere

Nexion

Hyprnote

bitchat

Donut Browser

Stakpak

Jentic

Breadcrumb

AlphaClaw

OpenObserve

ClawSecure

IronClaw

NothingHere

Nexion

Hyprnote

bitchat