Reposted from forum.

I couldn't find an existing compilation of Nim practice websites, so
I thought it would be helpful to create one. Here's what I've found so far:

Sites with Native Nim Support:

• Exercism - Low difficulty, excellent support, best experience, uses latest Nim compiler
• Code Golf - Can be used as general programming challenge website, supports latest Nim compiler
• Kattis - All ranges of difficulty, 5000+ problems, uses Nim v2.0.0
• CodeWars - Easy and Medium difficulty, most katas use outdated Nim v1.6 compiler, some even older version
• Sphere Online Judge - Uses Nim v0.19.4

Sites Supporting JavaScript (Compatible with Nim's JS Backend):

• LeetCode - Add {.exportc.} pragma to your function and compile with -b:js backend
• Potentially all other programming challenges websites that support js or nodejs, but I've only tested leetcode.

Language-Agnostic Websites (Text/Output Based):

• Advent of Code - good quality Christmas-themed puzzles, runs in December (see y'all in a week!)
• Everybody Codes - similar to Advent of Code, but starts one month early
• Project Euler - mathematical/programming problems, difficulty spike past first 100 problems
• The Weekly Challenge - submissions are not checked

Please share any other resources you know!