Security Open Source Tools

Alternative toAdobe Acrobat

Self-hosted PDF editor with 50+ tools for every PDF task

• 94,607 GitHub stars
• MITLicence MIT

Alternative toDatadog

Open source dashboards for metrics, logs, and traces

• 77,396 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Monitoring

Alternative toLSEG Workspace (formerly Refinitiv Eikon)

Open source AI research workspace for financial analysis

• 74,512 GitHub stars
• Apache-2.0Licence Apache-2.0
• #AI Agents

Alternative toBitwarden

Lightweight self-hosted password manager server, Bitwarden compatible

• 69,337 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Security

Alternative toTesla Full Self-Driving

Open source AI driver assistance for supported vehicles

• 63,953 GitHub stars
• MITLicence MIT
• #AI Agents

Alternative toAmazon S3

Hyperscale S3-compatible object storage for AI workloads

• 61,370 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Database

Alternative toJEB Decompiler

Free APK and DEX decompiler with GUI, navigation, and deobfuscation.

• 51,113 GitHub stars
• Apache-2.0Licence Apache-2.0

Alternative toMicrosoft Teams

Self-hosted team chat with voice, video, and omnichannel support

• 46,298 GitHub stars
• MITLicence MIT
• #Chat

Alternative toSigmaOS

Focus-first Firefox fork with workspaces and split-view browsing

• 45,037 GitHub stars
• MPL-2.0Licence MPL-2.0

Alternative toAstrill VPN

Open source proxy core with XTLS, VLESS, and REALITY protocols

• 42,209 GitHub stars
• MPL-2.0Licence MPL-2.0