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Category: Security

Content Control Software

Parental Controls – local parental controls for supervised accounts

October 4, 2026 Steve Emms GUI, Security

BigLinux Parental Controls is a GTK4 suite for supervised accounts, app restrictions, web filtering and screen-time limits.

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Encryption

11 Best Free and Open Source Linux Disk Encryption Tools

October 4, 2026 Steve Emms Internet, Roundup, Security, System Software

Keep your data safe. There are many different useful tools that offer disk encryption. We recommend the best free and open source solutions.

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Network Analyzers

4 Best Free and Open Source PKI and Certificate Authority Tools

October 3, 2026 Steve Emms Roundup, Security

Explore free and open source PKI and Certificate Authority tools for managing certificates, digital identities, signing and trust.

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Content Control Software

Pardus Parental Control – manage application, website and session restrictions

October 3, 2026 Steve Emms GUI, Security

Pardus Parental Control is a GTK4 parental control tool for restricting applications, websites and session time on Linux.

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Encrypted Files

20 Best Free and Open Source Linux CLI File Encryption Tools

October 3, 2026 Steve Emms CLI, Roundup, Security

This roundup explores the finest CLI-based file encryption tools.

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6 Best Free and Open Source Application Sandboxing Tools

October 1, 2026 Steve Emms Roundup, Security

Explore Linux application sandboxing tools for isolating software and restricting access to system resources.

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Security

18 Useful Free and Open Source Binary Analysis Tools

September 29, 2026 Steve Emms Roundup, Security

We have compiled a comprehensive list of useful tools for performing binary analysis.

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Security

gittuf – security layer for Git repositories

September 28, 2026 Steve Emms Security

gittuf is a platform-agnostic security layer for Git repositories that lets developers independently verify repository security policies.

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Security

19 Best Free and Open Source Linux Digital Forensics Tools

September 28, 2026 Steve Emms Roundup, Security, System Software

Digital forensics is a specialist art. It allows investigations to be undertaken without modifying the media.

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Hakoniwa – process isolation using Linux security facilities

September 27, 2026 Steve Emms CLI, Security

Hakoniwa provides Linux process isolation with namespaces, cgroups, resource limits, Landlock, seccomp and configurable filesystem access.

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isolate – secure execution environment for untrusted programs

September 27, 2026 Steve Emms CLI, Security

isolate securely runs untrusted Linux programs in restricted environments with namespaces, cgroups, resource limits and syscall filtering.

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8 Best Free and Open Source Software Bill of Materials Tools

September 27, 2026 Steve Emms Roundup, Security

Discover the best free and open source tools for generating and analysing Software Bills of Materials on Linux.

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Security

8 Best Free and Open Source Linux Graphical Port Scanners

September 27, 2026 Steve Emms Roundup, Security

Here’s our verdict on the best graphical port scanners.

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Security

Notation – sign and verify software artifacts

September 27, 2026 Steve Emms CLI, Security

Notation is a command-line tool for signing and verifying container images and other artifacts stored in OCI registries.

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Syd – configurable application sandbox for Linux

September 27, 2026 Steve Emms CLI, Security

Syd is a Linux application sandbox using seccomp, Landlock and namespaces to control filesystem, network and process behaviour.

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Security

in-toto – framework for software supply chain integrity

September 26, 2026 Steve Emms CLI, Security

in-toto protects software supply chains by recording signed metadata for each step and checking the result against a defined layout.

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Security

cosign – sign and verify software artifacts with Sigstore

September 26, 2026 Steve Emms CLI, Security

cosign signs and verifies containers, binaries and other software artifacts using Sigstore, keys, identities and transparency logs.

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NsJail – process isolation and sandboxing utility

September 26, 2026 Steve Emms CLI, Security

NsJail is a process isolation tool designed to run applications inside tightly controlled environments.

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bubblewrap – low-level unprivileged sandboxing tool

September 26, 2026 Steve Emms CLI, Security

bubblewrap is a low-level Linux sandboxing tool for constructing restricted process environments with namespaces, bind mounts and seccomp.

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Network Security

22 Best Free and Open Source CLI Data Hashing Tools

September 24, 2026 Steve Emms CLI, Roundup, Security

Hashing is the process of passing data through a formula that produces a condensed fixed-value representation, called a hash value.

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