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12 Open Source Tools Every Developer Should Know🔥

Anthony Max on June 09, 2025

TL;DR Every day we use different technological tools, already on automatism, although we have not heard about them before. With the kn...
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Alois Sečkár

With an assumption this is NOT just some AI blabbering, the level of randomness of this list is surprising me.

I see you have some Vue.js backround, which is nice. But why pointing out Vapor, which is experimental feature that will eventually land in Vue core itself? If you are into edge technologies, why not mention Oxc, which will be a thing soon? Or, why not to select real gems that already emerged thanks to Evan You, namely Vite? And VuePress seems to be effectively dead (last relase 2 years ago, although there is some ongoing v2 effort) in favor of VitePress.

On the other hand - quite unrelated Next.js is in the list, but not Nuxt? While at it, why not to know Express.js, why not Astro, Svelte and tons of other options?

Also - you listed Bun as the youngest addition to JS runtimes family. Why not Deno? Are you sure Bun is more worthy?

To me, it looks more like "12 cool OS projects I know". Which is perfecty fine, I also tend to prefer tools I like over others, but it should be declared. I would read the list anyway, because I am constantly seeking for knowing more tech-stuff at least briefly. But it would sound more honest and fair.

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Anthony Max • Edited

Thank you so much for the detailed comment! "Why one thing and not the other?" - I just wanted to. It's hard to put everything into 12. I've already contributed Deno before. As for Vapor, it's a special project for me. I believe in him. I spent 3 years of my life creating a framework without a virtual DOM, one of the fastest on the Internet. I know what Vapor is doing - it's a real sensation, because at least someone from the big three will be able to achieve such a speed.

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Anthony Max

Yes, in general, hardly anyone understands what is going on with Vapor. This Community topic is too uninteresting, believe me.

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Anthony Max

People are more interested in more AI crap than in such important projects

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Alois Sečkár

Vue ecosystem in general seems awfully overlooked here in Europe. For most people still "JS = React"

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Anthony Max • Edited

I myself am React (Next.js) dev in my main job. There are just not enough vacancies for Vue.

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Alois Sečkár

I managed to convince my company to use Nuxt in two (successful) projects already. But you're right. Unless you can drive what technology will be used, it is hard to find an opportunity.

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Meenakshi Agarwal

Thanks for sharing. This list is a time-saver for developers! It covers must-know tools like Docker Compose for containers, LangChain for AI apps, and Bun for blazing-fast JavaScript. Vue-Vapor and Shadcn UI make frontend dev smoother, while Postiz and Mockoon simplify social media and API testing. Whether you're building docs with VuePress or scalable backends with Nest.js, these tools save time and boost efficiency.

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Anthony Max

No problem! I think, this is great list

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Jade Bennett

Very helpful information is shared nowadays most of the India based 2D game development services provider companies development team were also using these tools due to various benefits were provided by them which results in increased high-quality results.

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Nathan Tarbert

growth like this is always nice to see, makes me think if it’s just the hype or if these projects really stick in my routine long-term. you reckon it’s about habits or does it hinge more on the community?

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Anthony Max

Habits

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Nathan Tarbert

Yep, agreed!

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Jason Ham

I am older. I just stumbled across this site. This is my first post here. Way back when, I started out on Cobol/IBM mainframes and then surfed the wave of the dawn of the internet. It was fun.....

I checked out of development over a decade ago, but with AI making a surge, and the internets UI seemingly being transformed overnight, I am spending a lot of time, figuring all this stuff out. -- Its so good.....

You all rattled off tools and terms, and I have no idea what they are.;
And I wonder, with the speed and scale at which this change is happening, how the heck do you all keep up with it; Happy coding.

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Butterfly

Great list!

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Anthony Max

Thanks!

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Dotallio

Great picks! I've been loving LangChain and Bun lately, but I think Supabase deserves a spot here too.
What’s one tool on your list you’d never want to work without?

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Anthony Max

Thanks! Docker Compose

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Praveen Rajamani

Helpful compilation!

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Anthony Max

Thanks!

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Werliton Silva

showw! thank u for this post

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Anthony Max

No problem

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Rock Brown

Great list... Almost makes me wish I had to use JavaScript... Thankfully I don't. :).

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Samuel Ayodele

Wow, these are cool 🔥

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Anthony Max

I think too

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Anthony Max • Edited

Made a really cool list of development tools. What else could have been added?

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Elfreda

Solid list! Adding an unconventional ‘tool’: AI assistants that integrate open models locally (e.g. via Ollama).
I use ChatGOT which combines DeepSeek/Claude/etc. in one interface — surprisingly handy for generating docs, debugging legacy code, or even translating error messages instantly.
Not OSS itself, but supercharges OSS workflows ✨

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Ahmed Atwa

Many of these are not really "tools", contradicting expectations when opening the post. They are frameworks and libraries.

Please choose the title carefully so that it doesn't become a clickbait or create false expectations.

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Nandini Singh

Great list.. I also have a suggestion for tailwind css components which is free and open source.