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LocalSecTools VS Local Dev Tools

Compare LocalSecTools VS Local Dev Tools and see what are their differences

LocalSecTools

Privacy-first, 100% client-side SecOps, CIDR, Linux & SIEM engineering tools.

Rating
0 reviews
Pricing
Free
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Alternatives Is it good?
Local Dev Tools

Offline utilities for devs, keep your business data safe

Rating
0 reviews
Promote on VibeVoted
Alternatives Is it good?
Thalam
OpenAI-compatible API gateway for GPT, Claude, Gemini, DeepSeek, Qwen, Kling and more. One key, one endpoint, one bill. Pay per token, no lock-in. sponsored

Which is more popular?

Based on our record, LocalSecTools seems to be more popular. It has been mentioned 1 time since March 2021.

social mentions
1 vs 0
Developer Tools popularity
44% vs 56%
alternatives listed
10 vs 7

Base details

Website, pricing, platforms and company facts side by side.

LocalSecTools
Local Dev Tools
Website localsectools.com usemiller.dev
Pricing
Free
—
Platforms
Web
—
Company 1 - 9 employees · 2026 —
Listed in
IT And Cybersecurity Network Management Developer Tools Sysadmin Tools +1
Marketing Platform PPC Digital Marketing Developer Tools +1

About LocalSecTools and Local Dev Tools

In their own words, as submitted to SaaSHub.

LocalSecTools
Local Dev Tools

LocalSecTools provides security analysts, cloud architects, and Linux engineers with 10 essential browser-local utilities that never transmit inputs to a server. Designed for air-gap-grade operational security, it replaces ad-heavy server-side calculators with instant client-side tools for visual...

Read more about LocalSecTools

No description of Local Dev Tools yet.

Features and specs

What each product offers, as listed by its team.

LocalSecTools 10 features
Local Dev Tools 5 features
  • Visual CIDR Subnet Splitter & IPv4 Calculator
    Interactively split and merge IPv4 CIDR blocks (/16 to /32), calculate usable hosts, and map RFC 1918 cloud VPC ranges.
  • Linux Chmod Permissions Calculator (Octal & Symbolic)
    Convert octal (755, 600, 777) and symbolic (-rwxr-x---) Linux file permissions with automated security risk warnings.
  • Crontab Visualizer & Systemd .timer Generator
    Translate 5-field cron expressions into plain English, next run timestamps, and systemd OnCalendar= .timer unit files.
  • CVSS 4.0 & CVSS 3.1 Base, Threat & Environmental Calculator
    Calculate CVSS v4.0 and v3.1 vulnerability severity scores and parse vector strings offline in your browser.
  • Offline PowerShell Base64 & Log De-obfuscator
    Decode PowerShell UTF-16LE Base64, Hex, Binary, URL, and Gzip-compressed security logs 100% locally in your browser.
  • Client-Side JWT Decoder & Vulnerability Auditor
    Inspect JSON Web Token headers, payloads, and expiration timestamps locally with automated alg:none security checks.
  • Threat Intelligence IOC Extractor & URL/IP Defanger
    Extract and defang IPv4s, URLs, root domains, SHA256/MD5 hashes, and CVEs from raw incident logs and phishing emails.
  • SPF & DMARC TXT Record Builder & Diagnostic Validator
    Generate SPF and DMARC DNS records and diagnose p=none quarantine warnings or >10 DNS lookup limit errors.
  • JSON ↔ YAML Converter & Cloud IAM Policy Linter
    Convert JSON and YAML configurations locally and audit AWS IAM / Kubernetes manifests for wildcard (*) privilege risks.
  • KQL & Splunk SPL SIEM Detection Query Builder
    Build and translate Microsoft Sentinel KQL, Splunk SPL, and LogQL detection queries side by side with a visual builder.
  • Simplified Local Development
    Local Dev Tools by Miller provides a streamlined way to set up and manage local development environments, reducing the complexity of configuring services and dependencies manually.
  • Docker-Based Infrastructure
    The tool leverages Docker containers to run infrastructure services locally, making it easy to spin up databases, message queues, and other services without installing them directly on your machine.
  • Project Configuration as Code
    Development environment configurations can be defined as code, making it easy to share setups across teams and ensure consistency between developers working on the same project.
  • Quick Setup and Onboarding
    New team members can get up and running quickly by using predefined configurations, significantly reducing onboarding time and the 'works on my machine' problem.
  • Free and Open Approach
    Local Dev Tools offers a lightweight, accessible solution for developers who need local infrastructure without the overhead of more complex orchestration platforms.

Possible disadvantages

  • Limited Community and Ecosystem
    As a relatively niche tool, Local Dev Tools has a smaller community compared to more established alternatives like Docker Compose or DevContainers, meaning fewer resources, tutorials, and community support are available.
  • Docker Dependency
    The tool requires Docker to be installed and running, which adds a dependency and can consume significant system resources, especially on machines with limited RAM or CPU.
  • Learning Curve for New Users
    Despite aiming for simplicity, users unfamiliar with containerized development workflows may still face a learning curve understanding how the tool configures and manages services.
  • Limited Documentation and Examples
    Being a smaller project, the documentation and number of real-world examples may be less comprehensive compared to mainstream development environment tools, making troubleshooting harder.
  • Potential Compatibility Limitations
    The tool may not support every possible infrastructure service or configuration scenario out of the box, potentially requiring workarounds for more complex or unusual development setups.

Analysis

An editorial look at what each product does well and who it suits.

LocalSecTools
Local Dev Tools

No analysis of LocalSecTools yet.

Overall verdict

  • Local Dev Tools (usemiller.dev) is a solid choice for developers seeking privacy-focused, browser-based utilities that run entirely on their machine without sending data to external servers.

Why this product is good

  • All processing happens locally in your browser, so sensitive data never leaves your device
  • Offers a wide collection of common developer utilities in one convenient place
  • No account or sign-up required, making it quick to start using
  • Works offline once loaded, which is handy for uninterrupted workflows
  • Free to use with a clean, no-nonsense interface

Recommended for

  • Developers who prioritize data privacy and security
  • Engineers working with sensitive or proprietary data that shouldn't be uploaded
  • Anyone needing quick access to formatting, encoding, and conversion tools
  • Teams looking for a lightweight alternative to scattered online tools
  • Users who frequently work offline or in restricted network environments

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
LocalSecTools
Local Dev Tools
44% 44%
Developer Tools
56% 56%
0% 0%
Marketing Platform
100% 100%
100% 100%
Sysadmin Tools
0% 0%
0% 0%
Digital Marketing
100% 100%

Questions & Answers

As answered by people managing LocalSecTools and Local Dev Tools.

Who are some of the biggest customers of your product?

LocalSecTools's answer

  • Enterprise SOC & Incident Response Teams
  • Cloud Network & VPC Architects (AWS, Azure, GCP)
  • Linux System Administrators & DevOps Engineers
  • Application Security (AppSec) & Vulnerability Management Analysts
  • DACH Region (Germany, Austria, Switzerland) GDPR-Conscious IT Teams
  • Cybersecurity Students & Networking Certification Candidates

What makes your product unique?

LocalSecTools's answer

LocalSecTools combines 10 core security operations (SecOps), cloud networking, and Linux system administration calculators into a single, 100% client-side workbench where tool inputs never leave your browser. Unlike fragmented utility sites that only do one thing or transmit user inputs to a backend API, LocalSecTools runs every operation locally via browser WebCrypto, DecompressionStream, and bitwise arithmetic. It also bridges legacy and modern workflows out of the box—such as translating 5-field Linux crontabs directly into systemd OnCalendar= .timer unit files, scoring CVSS v4.0 alongside CVSS v3.1, and generating Microsoft Sentinel KQL and Splunk SPL detection queries side by side.

Why should a person choose your product over its competitors?

LocalSecTools's answer

Security analysts and infrastructure engineers frequently handle sensitive data—such as production JSON Web Tokens (JWTs), obfuscated PowerShell incident logs, internal IPv4 subnet architectures, and cloud IAM policies—that strict corporate data-protection and GDPR/DSGVO policies forbid pasting into server-side web decoders.

Engineers choose LocalSecTools over single-purpose tools like Crontab.guru, JWT.io, MXToolbox, or heavy frameworks like CyberChef because: 1. Zero Server Uploads: All decoding, parsing, and bitmask calculations execute strictly client-side in your browser. 2. Built-in Security Auditing: Instead of just converting values, the tools actively flag operational risks (such as chmod 777/666 world-writable warnings, JWT alg:none signature bypasses, DMARC p=none non-enforcement, and wildcard "*" IAM privilege escalation). 3. Keyboard-First Speed: Instant Command Palette navigation (Ctrl+K / Cmd+K), zero login walls, sub-second static page loads, and bilingual English and German (/de/) interfaces.

How would you describe the primary audience of your product?

LocalSecTools's answer

Our primary audience consists of Security Operations Center (SOC) analysts, DevSecOps engineers, cloud network architects (AWS, Azure, GCP), Linux system administrators, and cybersecurity students. It is specifically built for technical practitioners who need fast, air-gap-safe browser utilities during live incident triage, firewall and VPC subnet planning, vulnerability scoring, and server hardening.

What's the story behind your product?

LocalSecTools's answer

LocalSecTools was founded and engineered by Asad Ali (an IT Support & Security Operations Engineer, Microsoft SC-200 and ISC2 CC certified). While working across enterprise system deployments, Linux server administration, and security operations, he noticed a recurring operational hazard: engineers had to jump between a dozen slow, ad-cluttered websites just to decode a PowerShell Base64 string, split a /24 CIDR block, inspect a JWT, or test a cron schedule—often risking accidental exposure of corporate tokens or logs to third-party servers. He built LocalSecTools.com to give the engineering and SecOps community a fast, unified, privacy-first utility workbench where every tool executes locally in the browser.

Which are the primary technologies used for building your product?

LocalSecTools's answer

  • Next.js (Static Site Generation / App Router)
  • TypeScript
  • React
  • Tailwind CSS
  • Web Cryptography API (WebCrypto) & Native Browser DecompressionStream

User comments

Share your experience with using LocalSecTools and Local Dev Tools. For example, how are they different and which one is better?

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

LocalSecTools 1 mention
Local Dev Tools 0 mentions
  • Stop Pasting Production Secrets Into Web Calculators: Subnet, chmod and Cron Math You Can Do Offline
    That test is why I built LocalSecTools, a set of browser-only security and sysadmin utilities. Every calculation there runs in JavaScript on your machine, and the Network tab stays quiet while you work. - Source: dev.to / about 16 hours ago

Tracking Local Dev Tools since Apr 2023.

Alternatives to LocalSecTools and Local Dev Tools

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