Best Threat Detection & Response Tools in 2026

Sentry

Real-time error tracking and performance monitoring

Stars
43,684
Forks
4,663
Last commit
9 hours ago

Detect, diagnose, and resolve software issues quickly with powerful error tracking, performance monitoring, and release management.

Open Source Alternative to:

DataDog

ProjectDiscovery

Advanced vulnerability detection and management platform

Stars
28,063
Forks
3,369
Last commit
14 hours ago

Monitor infrastructure for exploitable vulnerabilities with real-time detection, automated workflows, and zero false positives.

Open Source Alternative to:

DataDog

HyperDX

Full-stack observability without the enterprise price tag

Stars
9,456
Forks
393
Last commit
5 hours ago

Open source observability platform unifying session replays, logs, traces, metrics and errors. Fast search, automatic clustering, $0.40/GB pricing.

Open Source Alternative to:

DataDog

Highlight

Real-time observability for modern web applications

Stars
9,240
Forks
536
Last commit
9 days ago

Comprehensive monitoring solution offering error tracking, session replay, and performance insights for seamless debugging and optimization.

Open Source Alternative to:

DataDog

Tracecat

Open source security automation platform for builders

Stars
3,560
Forks
353
Last commit
8 hours ago

Tracecat is a scalable, self-hostable platform for automating security workflows and playbooks without limits.

Open Source Alternative to:

Jira

Opengrep

Open-source code security engine for developers

Stars
2,431
Forks
199
Last commit
13 hours ago

Opengrep is a community-driven fork of SemgrepCE, providing accessible static code analysis and security scanning for developers.

Bugsink

Self-hosted error tracking for full control and scalability

Stars
1,712
Forks
94
Last commit
15 hours ago

Bugsink offers real-time error tracking with self-hosting capabilities, allowing easy installation and connection to any app using Sentry-compatible SDKs.

Open Source Alternative to:

DataDog

Tirreno

Security framework that protects from within your product

Stars
1,255
Forks
139
Last commit
18 days ago

Open-source security framework for threat detection, fraud prevention, and abuse monitoring. Self-hosted solution with built-in dashboard and risk scoring.

Open Source Alternative to:

Seon

Temps

Replace $500/mo SaaS with one self-hosted platform

Stars
420
Forks
18
Last commit
13 hours ago

Self-hosted deployment platform combining analytics, error tracking, and monitoring. Replace Vercel + Sentry + analytics tools with one binary on your VPS.

Open Source Alternative to:

Vercel

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Sentry

Real-time error tracking and performance monitoring

Stars
43,684
Forks
4,663
Last commit
9 hours ago

Detect, diagnose, and resolve software issues quickly with powerful error tracking, performance monitoring, and release management.

Open Source Alternative to:

DataDog

ProjectDiscovery

Advanced vulnerability detection and management platform

Stars
28,063
Forks
3,369
Last commit
14 hours ago

Monitor infrastructure for exploitable vulnerabilities with real-time detection, automated workflows, and zero false positives.

Open Source Alternative to:

DataDog

HyperDX

Full-stack observability without the enterprise price tag

Stars
9,456
Forks
393
Last commit
5 hours ago

Open source observability platform unifying session replays, logs, traces, metrics and errors. Fast search, automatic clustering, $0.40/GB pricing.

Open Source Alternative to:

DataDog

Highlight

Real-time observability for modern web applications

Stars
9,240
Forks
536
Last commit
9 days ago

Comprehensive monitoring solution offering error tracking, session replay, and performance insights for seamless debugging and optimization.

Open Source Alternative to:

DataDog

Tracecat

Open source security automation platform for builders

Stars
3,560
Forks
353
Last commit
8 hours ago

Tracecat is a scalable, self-hostable platform for automating security workflows and playbooks without limits.

Open Source Alternative to:

Jira

Opengrep

Open-source code security engine for developers

Stars
2,431
Forks
199
Last commit
13 hours ago

Opengrep is a community-driven fork of SemgrepCE, providing accessible static code analysis and security scanning for developers.

Bugsink

Self-hosted error tracking for full control and scalability

Stars
1,712
Forks
94
Last commit
15 hours ago

Bugsink offers real-time error tracking with self-hosting capabilities, allowing easy installation and connection to any app using Sentry-compatible SDKs.

Open Source Alternative to:

DataDog

Tirreno

Security framework that protects from within your product

Stars
1,255
Forks
139
Last commit
18 days ago

Open-source security framework for threat detection, fraud prevention, and abuse monitoring. Self-hosted solution with built-in dashboard and risk scoring.

Open Source Alternative to:

Seon

Temps

Replace $500/mo SaaS with one self-hosted platform

Stars
420
Forks
18
Last commit
13 hours ago

Self-hosted deployment platform combining analytics, error tracking, and monitoring. Replace Vercel + Sentry + analytics tools with one binary on your VPS.

Open Source Alternative to:

Vercel

Open Source Threat Detection & Response Tools

A curated collection of the best open source tools for identifying, analyzing, and responding to security threats.

Sentry

ProjectDiscovery

HyperDX

Highlight

Tracecat

Opengrep

Bugsink

Tirreno

Temps

Sentry

ProjectDiscovery

HyperDX

Highlight

Tracecat

Opengrep

Bugsink

Tirreno

Temps