Tools

Web apps // Websites

Practice

• CodeWars

  Let's you solve problems with code. Ranking system and social hub implemented. IMHO the best site to learn new languages.

• LeetCode

  Geared more towards common technical interview questions and expanding knowledge level.

• Project Euler

  Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve.

• CodinGame

  Try Clash of Code mode - battle against your friends in problem solving tasks.

Inspiration

• Clone Wars

  100+ open-source clones and alternatives of popular sites like Airbnb, Amazon, Instagram, Netflix, Tiktok, Spotify, Whatsapp, Youtube, etc.

Algorithms

• VisuAlgo

  Visualization of most common sorting and searching algorithms

• Sorting.at

  Similar to VisuAlgo

• List of algorithms

In-browser code execution

• glot.io

  Run your code in browser

• replit

  Similar to glot.io

Fonts

• Google Fonts

Developer Portals

• Discord Dev Portal

Standards

• XMPP
• IETF

Search

• SourceGraph

  Search all open-source code using regex or full text search. Useful for finding code examples of XYZ library or function.

• Grep.app

  Similar to SourceGraph; seems to have less repos indexed, but is faster

Desktop Apps

IDEs // Editors

• Visual Studio Code
• Notepad++

API testing

• Postman
• Insomnia

PDF viewers // editors

• Sumatra PDF

Code snippets

• Nemec blog

  Various python, bash, sql snippets

APIs

• NeutrinoAPI

  General purpose API; collection of various tools

Github

• Shields

  Generate markdown badges

• ReadMe Generator

  Automatic README generator