BitFight

What it does

BitFight: Where Code Meets Competition. ⚔️ The ultimate 1v1 competitive arena for speed-coding. Race the clock and find solutions faster than your opponent in real-time. Key Features: • Ranked 1v1: ELO-based matchmaking for balanced duels. • Live Rooms: Host contests for up to 100 players. • Instant Judging: Millisecond execution with WebSocket sync. • Fair Play: Plagiarism detection & sandboxed runs. Compete in C++, Python, Java, Go, or Rust. Prove you're the fastest coder. 🚀

The ultimate arena for real-time competitive coding. Solve algorithmic challenges, duel with developers, and climb the global ELO ranks.

Battle 1v1, host multi-player contests, or practice solo. Race the clock, climb the ranks, and prove your skill. Live countdowns, instant submission status, and WebSocket-powered updates so you always know where you stand. Host public or private contests with up to 100 players. Partial scoring, live leaderboards, and timed rounds. Code is compiled and tested against all cases in milliseconds. No waiting around for results. Sandboxed execution, plagiarism detection, and ELO guards ensure every match is won on skill alone. Queue up, get matched, and fight for ELO points. Your rank reflects your real skill. Create or join timed contests with friends. Solve multiple problems and compete on a…from bitfight.in

• BA
  Byte Arena – Code Your Fighter Bot2017 · doc.bytearena.com · ▲179
• 
  Code ArenaFeb 2026 · arena.ai · ▲272

  Prompt once. Compare multiple AI-built apps for free.

• 
  CodeFights2014 · ▲96

  Practice Programming

• 
  bit bit blocks2015 · apps.apple.com · ▲57

  Cute and action-packed competitive puzzle game

• 
  DualDevJun 2026 · ▲3

  Real-time 1v1 coding live battles with an AI judge

• 
  bit blocks2015 · apps.apple.com · ▲73

  Adversarial block-matching game with adorable graphics

• 
  /dev/null▲483

  a social network for devs

  Dev tools · 3d ago · dev-null.sh

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 27d ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 25d ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 23d ago · openbot.run

• 
  Talanoa▲345

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 20d ago · talanoa.email

• 
  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 28d ago · corespeed.io

• 
  Lightfield▲901

  AI-native CRM that builds itself and does work for you

  AI · Mar 2026 · lightfield.app

• 
  Tobira.ai▲728

  A network where AI agents find deals for their humans

  AI · Mar 2026 · tobira.ai

• 
  Claude Import Memory▲716

  Switch from ChatGPT to Claude with import memory feature

  AI · Mar 2026 · claude.com

• 
  Littlebird▲709

  Littlebird remembers everything across your meetings, messages, docs, and apps, then takes action so you can recall any detail and never lose context.

  AI · Mar 2026 · littlebird.ai

• 
  Viktor.com▲702

  Your AI Coworker that proactively executes tasks

  AI · Mar 2026 · viktor.com

• 
  Jupid▲659

  File your taxes with Claude Code

  Commerce · Mar 2026 · jupid.com