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DEV Challenges

This is the official tag for submissions and announcements related to DEV Challenges.

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Hacktoberfest 2026 is here

Hacktoberfest 2026 is here

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1 min read
Hacktoberfest 2026

Hacktoberfest 2026

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1 min read
Down the Rabbit Hole: An AI Mini-Podcast Generator

Down the Rabbit Hole: An AI Mini-Podcast Generator

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2 min read
Building a 100% Local Receipt Sorter with Ollama Vision

Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle Submission đź’¸

Building a 100% Local Receipt Sorter with Ollama Vision

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4 min read
Proof Desk: receipts before rewards

Sanity Challenge Path Two Submission

Proof Desk: receipts before rewards

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6 min read
Vanam by Mahaveer Varma

Hacktoberfest Open-Source AI Challenge Week 1: Touch Grass Submission 🌿

Vanam by Mahaveer Varma

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1 min read
Checkilex: Local AI for the Final Handoff

Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle Submission đź’¸

Checkilex: Local AI for the Final Handoff

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3 min read
A receipt reader on open vision models: 4 models, 50 receipts, 25x price gap

Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle Submission đź’¸

A receipt reader on open vision models: 4 models, 50 receipts, 25x price gap

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6 min read
Haggle: rehearse your freelance rate against a lowballing client who lives in your browser tab

Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle Submission đź’¸

Haggle: rehearse your freelance rate against a lowballing client who lives in your browser tab

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6 min read
MarginLeak : Accounts-payable auditor for small businesses

Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle Submission đź’¸

MarginLeak : Accounts-payable auditor for small businesses

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10 min read
CrisisIQ: An AI Investigation Agent That Doesn't Guess Where Its Evidence Came From

Sanity Challenge Path One Submission

CrisisIQ: An AI Investigation Agent That Doesn't Guess Where Its Evidence Came From

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4 min read
I built Wait For It: tell an open Gemma what you're waiting for, it informs you without you needing to check in regularly

Hacktoberfest Open-Source AI Challenge Week 3: Slow and Steady Submission 🦥

I built Wait For It: tell an open Gemma what you're waiting for, it informs you without you needing to check in regularly

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12 min read
BuddyBrain: A Private, On-Device AI Companion Built for My Overwhelmed Friend

Hacktoberfest Weekend Challenge: Build for a Friend Submission 🤝

BuddyBrain: A Private, On-Device AI Companion Built for My Overwhelmed Friend

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3 min read
Errata Lens: an ESP32 agent that knows when the datasheet is wrong

Sanity Challenge Path One Submission

Errata Lens: an ESP32 agent that knows when the datasheet is wrong

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4 min read
Spotter an app for gym data

Hacktoberfest Weekend Challenge: Build for a Friend Submission 🤝

Spotter an app for gym data

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4 min read
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