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Goodfirstissue alternatives & similar sites

Good First Issue: Make your first open-source contribution — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Programming Languages →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
curlycat.dev ↗	66 match 2 shared topics	CurlyCat — We code, create, and open source.	en	programming-languages	robotsllmsaihumans	emailphone	none
brimleylabs.com ↗	65 match 2 shared topics	Brimley Labs - Open Source by Matthew Summers	en	technology-and-computing	robotsllmsaihumans	emailphone	none
myopensourcejourney.com ↗	65 match 2 shared topics	My Open Source journey	en	programming-languages	robotsllmsaihumans	emailphone	none
deadem.com ↗	64 match 2 shared topics	Deadlock, Dota 2 & CS2 Demo Parser — Source 2 Replay Libraries	en	programming-languages	robotsllmsaihumans	emailphone	none
programmervisit.com ↗	64 match 2 shared topics	Programmervisit: Your Source for Coding Articles, Tools, Blogs, and Tech News	en	technology-and-computing	robotsllmsaihumans	emailphone	none
cyclikal.dev ↗	64 match 2 shared topics	cyclikal.dev \| Source code for https://cyclikal.dev/	en	technology-and-computing	robotsllmsaihumans	emailphone	none
learntodroid.com ↗	64 match 2 shared topics	Learn to Droid – Your Ultimate Resource for Android App Development	en	programming-languages WordPress	robotsllmsaihumans	emailphone	none
brianpos.com ↗	64 match 2 shared topics	using Hl7.Fhir; – Making FHIR work in your projects with minimal effort, and maximum conformance	en	programming-languages WordPress	robotsllmsaihumans	emailphone	none
lazycoderonline.com ↗	64 match 2 shared topics	LazyCoder Online \| Final Year Project Source Code with Reports (Java, Python, PHP, AI)	en	programming-languages	robotsllmsaihumans	emailphone	partial · 8
codecogs.com ↗	63 match 2 shared topics	CodeCogs \| Open Source Scientific Library (C/C++, .NET, Excel)	en	programming-languages	robotsllmsaihumans	emailphone	none
champness.org ↗	63 match 2 shared topics	champness.org \| Agile methods; emergent design and evolutionary architecture; test-first TDD; loose coupling; inversion of control and dependency injection.	en	programming-languages	robotsllmsaihumans	emailphone	none
programmerfriend.com ↗	63 match 2 shared topics	ProgrammerFriend.com - The resource for your Programmer needs	en	technology-and-computing	robotsllmsaihumans	emailphone	none
carolynduby.com ↗	63 match 2 shared topics	Big Data with Carolyn Duby – Useful and unique information about Big Data with Apache Open Source	en	technology-and-computing WordPress	robotsllmsaihumans	emailphone	none
sigwait.com ↗	63 match 2 shared topics	It's Your Code!	en	programming-languages	robotsllmsaihumans	emailphone	none
btmash.com ↗	63 match 2 shared topics	BTMash - Blob of contradictions - BTMash	en	technology-and-computing	robotsllmsaihumans	emailphone	none
bernat.tech ↗	63 match 2 shared topics	Bernát Gábor — Python packaging, tox, virtualenv & open source	en	programming-languages	robotsllmsaihumans	emailphone	none
programmergate.com ↗	63 match 2 shared topics	Initial Commit - Quality resources and tools for developers	en	programming-languages	robotsllmsaihumans	emailphone	none
abc-tradinggroup.com ↗	62 match 2 shared topics	EasyLanguage Programmer \| Multicharts \| Tradestation	en	programming-languages WordPress	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.