Best Open Source Security & Monitoring Tools in 2026

Open Source Alternatives

Alternatives Blog Advertise

Open Source Alternatives

Oso Cloud

stars 3.5Kforks 191

Open source authorization with RBAC, ABAC, and ReBAC for any app

Authorization Security Developer Tools+4

Quiet

stars 2.6Kforks 138

Peer-to-peer serverless chat app with no central server

Chat Security Privacy Tools+3

Keestash

stars 10forks 2

Self-hosted team password manager with web-based access control

Security Authentication Authorization+4

Passwordcockpit

stars 136forks 30

Self-hosted team password manager with role-based access

Security Self Hosted Authentication+5

MiroTalk

stars 4.6Kforks 741

Free browser-based video calls with no sign-up required

Chat Video Screen Recorders+4

Password Safe

stars 855forks 168

Store passwords in an encrypted local database, no cloud account

Security Cybersecurity Authentication+3

Revolt

stars 3.1Kforks 358

Self-hosted open source Discord alternative with servers

Chat Self Hosted Security+4

Matrix

stars 4.3Kforks 548

Open protocol for secure, decentralized messaging and VoIP

Chat Security API Infrastructure+3

Element

stars 13.2Kforks 2.7K

Secure team chat built on the Matrix open protocol

Chat Security Self Hosted+5

Tox

stars 2.6Kforks 306

Free encrypted P2P messaging and voice calls, no servers

Chat Security Privacy Tools+5

Jami

stars 165forks 56

Free P2P encrypted messaging, calls, and file sharing

Chat File Sharing Security+3

Mumble

stars 8Kforks 1.3K

Free open source low-latency voice chat for gaming teams