Awesome Little Online Helpers

A collaborative curated list of awesome little online helpers and tools.

Contents

• IT Professions
  • Programming
  • IT Administration
  • Web Development/Design
  • Investigate suspicious URLs & Files
  • Computer Science

IT Professions

Programming

• regular expressions 101 - A great online tool for writing and testing Regular expressions.
• YAML Multiline Strings - Find the right syntax for your YAML multiline strings.
• gitignore.io - Create useful .gitignore files for your project.
• README.so - Simple editor that allows you to quickly add and customize all the sections you need for your project's readme.md file.
• JSON Hero - JSON Hero makes reading and understand JSON files easy by giving you a clean and beautiful UI.

IT Administration

• IP Subnet Calculator - This calculator returns information regarding Internet Protocol version 4 (IPv4) and IPv6 subnets.
• Chmod Calculator - An awesome Chmod Calculator to convert Linux file permissions between different formats.
• crontab guru - Quick and simple editor for cron schedule expressions.
• MySQL Memory Calculator - Calculate the maximum MySQL memory usage based on settings in your my.cnf file.
• SSL Configuration Generator - An easy-to-use secure configuration generator for web, database, and mail software.
• SSL Server Test - A comprehensive free SSL test for your public web servers.
• endoflife.date - This site maintains quick links for checking End Of Life dates for various tools and technologies.

Web Development/Design

• www.urlencoder.io - This helps with quickly encoding URL's.
• www.urldecoder.io - This helps with quickly decoding URL's.
• Animista - A collection of pre-made CSS animations, tweak them and you will be able to copy and paste the code into your website.
• BGjar - A free SVG background generator for websites, blogs, and apps.
• DevSamples - DevSamples is a list of code samples for you to copy and paste into your projects as needed.
• Meta Tags - With Meta Tags you can edit and experiment with your content then preview how your webpage will look on Google, Facebook, Twitter and more.
• Undesign - Collection of free design tools and resources for makers, developers and designers.
• CSS Generator Tool - A CSS generator that helps you demonstrate and quickly generate CSS declarations for your website.

Investigate suspicious URLs & Files

• Virus Total - Analyse suspicious files, domains, IPs and URLs to detect malware and other breaches, automatically share them with the IT security community.

Computer Science

• Decompiler Explorer - Interactive online decompiler which shows equivalent C-like output of decompiled programs from many popular decompilers.
• Compiler Explorer - Interactive online compiler which shows the assembly output of compiled C++, Rust, Go (and many more).