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Opensource by Reddit
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Reddit's ♨️ take on Open Source Technology.

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Drawy, A New Whiteboard App for Linux!

This took me a long time, but after months of working during my free time, I'm extremely excited to share Drawy! It's an infinite, whiteboard desktop app written in Qt/C++.

# Motivation

Linux has had some apps with whiteboard features, like Xournal++ and Lorien. However, they have issues such as not having an infinite canvas (Xournal++) or lacking enough features (Lorien). That's why I decided to build Drawy, especially for Linux users. It's similar to Excalidraw but runs natively on your desktop, making it fast and lightweight. It's still in the alpha stage, but I have implemented key features that everyone needs:

Basic tools like pen, rectangle, ellipse, line, arrow, and text
Wacom tablet support with pressure sensitivity
Undo/redo support
Save/load files

Even though this seems very basic, it took an enormous amount of effort to develop. Drawy is still very stable to use (I've used it a lot to teach my students!)

# GitHub

The project is completely open source and licensed under the GNU General Public License V3. You can find the source code here: https://github.com/Prayag2/drawy

https://redd.it/1oxc5ep
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Licensing Problem

Hi everyone, I have less than one year of experience and currently work as a web developer. Recently, I was assigned to implement an algorithm that I found quite challenging (I won’t go into specifics, as it might reveal my identity). To figure it out, I looked into a library’s open source code and initially copied parts of it. While doing that, I noticed the library was licensed under MIT, which led me to research software licensing, something I wasn’t fully aware of before. After learning more, I decided not to copy the code directly. Instead, I used the idea behind the algorithm and wrote my own implementation in a different programming language, with a different structure. Now I’m unsure about the ethics and legal implications. If I re-implemented the same logic but with my own code and design, do I still need to include the MIT license for my work, or is this okay to use without attribution?

https://redd.it/1oxcxt1
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Just released my first open-source web app: user-flow-library (useful for dev shops and UI designers)

Hi all,

I’ve just open-sourced my first web app: github.com/alvinjchoi/user-flow-library

It’s built on Next.js and designed for UX/product folks to define & visualize user flows.

I’ve personally found it makes it a lot easier to align with clients on how their app will look and behave.

I’d appreciate any feedback, issues, or PRs. Hope someone finds it useful!



Cheers!

https://redd.it/1oxl1bn
@r_opensource
If you use OpenSource content in a project, are you required to make your original content also OpenSource?

As an example; if I were to include GNU Chess as a mini-game in a project ... do I have to declare the entire project also as OpenSource?

I'm generally unfamiliar with incorporating other people's content in my own projects so I hope this doesn't come off as a dumb/obvious question

note: GNU Chess is just being used as an example in case it's unique or atypical and can be replaced with anything

https://redd.it/1oxmqsw
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If you build AI tools and want to work on real hardware, here’s a way to earn and get hired

If you're into open source AI gadgets or hacking on wearables, r/OmiAI might be worth joining. A bunch of us there are sharing build ideas and setting up bounties for tools we want made. Some of these bounties pay well, and since the group is still small, good work gets noticed fast.

If you like shipping quick fixes, testing hardware ideas, or grabbing paid bounties before they get crowded, come through.


https://redd.it/1oxo0ji
@r_opensource
edit content and design with one cms for github sites

so none of you have created 1 cms to rule them all????? i have watched and looked at a few and its all just content stuff. I am looking for a cms for github I can design and create, so I get a template i kind of like then, in a cms or heck give it a new cool name since it doesn't exist yet, but all elements can be changed manipulated, dragged around moved, if it is something somebody can see on the frontend, then its something i want to have control over on the backend etc... and for free... why i posted in opensource : )

if you need me to explain more of what i am looking for please ask, thank you for your time.

I am a fine artist and want to design my site from an easy drap and drop cms where components (building blocks can be dropped on a stage and resized etc...) put a form here, overlay part of a design element such a triangle with just the point touching the edge... etc...

none of these do what i am asking, unless i missed something, again, thank u for read

\------------------------------------------------this is what reddit popped out when i gave it the noscript:::: --------------------------------------------------

Sources: r/learnprogramming, r/webdev, r/Nuxt \+2 more

Create and manage your GitHub site effortlessly with these top CMS options:

# Popular CMS for GitHub

* **Decap CMS**: A Git-based CMS that provides a user-friendly interface for content editing directly within your GitHub repository. ["Once it’s set up, it’s very friendly for clients. You can configure the admin panel to only expose exactly the fields they should touch (noscripts, paragraphs, etc.)"](https://www.reddit.com/r/learnprogramming/comments/1kr62yx/comment/mtayxq0/)
* **TinaCMS**: Known for its flexibility and UI editing capabilities, TinaCMS integrates seamlessly with Git workflows. ["TinaCMS"](https://github.com/tinacms/tinacms)
* **KeystaticCMS**: Offers a modern UI and Git-based content management, making it ideal for developers and content creators alike. ["I recently had a good experience with Keystatic."](https://www.reddit.com/r/webdev/comments/1k2xsxg/comment/mny1r84/)
* **OutstaticCMS**: A user-friendly CMS that works well with GitHub Pages and other static site hosting services. ["OutstaticCMS"](https://github.com/avitorio/outstatic)
* **Pages CMS**: Simplifies content editing directly in GitHub, making it a great option for small teams or solo developers. ["You can self-host it or just sign in on the website with your Github account."](https://www.reddit.com/r/webdev/comments/1k2xsxg/comment/mnxpw16/)

# Key Features to Consider

* **Git Integration**: Ensure the CMS integrates seamlessly with GitHub for version control and collaboration. ["Decap CMS (formerly Netlify CMS): Git-based, so it works great on Netlify"](https://www.reddit.com/r/learnprogramming/comments/1kr62yx/comment/mtayxq0/)
* **UI Editing**: Look for a user-friendly interface that allows non-technical users to easily update content. ["Your client gets a clean admin panel (username/password login) to edit text, noscripts, and more"](https://www.reddit.com/r/learnprogramming/comments/1kr62yx/comment/mtayxq0/)
* **Flexibility and Customization**: Choose a CMS that offers the flexibility to adapt to your specific needs and design requirements. ["Astro is super beginner-friendly, plays nicely with HTML (you can even use plain .html files at first), and is made for static sites."](https://www.reddit.com/r/learnprogramming/comments/1kr62yx/comment/mtayxq0/)

# Communities for More Insights

* [r/webdev](https://www.reddit.com/r/webdev/)
* [r/learnprogramming](https://www.reddit.com/r/learnprogramming/)
* [r/opensource](https://www.reddit.com/r/opensource/)

https://redd.it/1oxrms4
@r_opensource
Question about the potential of open sourcing a side project

Hi, first timer here, so I hope I don't break any rules.

My question is: Does my side project have the potential to be of broader interest, so that I might decide to open-source it?



Short denoscription: It's a Java/Spring based "framework" for an event driven state machine. It consists of a base Docker image, into which one can copy arbitrary service implementations. These services react to events they are interested in, pull the connected payload, process it according to their implementation, push the payload back and send a "finished" signal. There is a dedicated service which orchestrates the configurable event chain. I wrote payload persistence adapters for PostgreSQL and Redis and an event adapter for Kafka. Thanks to Kafka and partitioning the event topic, the services scale quite nice horizontically.



Well, there is more to it and the idea might not be new... but maybe someone can advise me on my initial question. TIA!

https://redd.it/1oxv9t0
@r_opensource
Galaxus and Opensource

Digitec Galaxus, Switzerland’s biggest online retailer explains why they’re moving away from Big Tech network solutions. Their engineering team built a fully open-source, self-hosted infrastructure (Proxmox, OpenWRT, Tailscale/Headscale) to stay flexible, avoid lock-in, and cut costs across their 30+ European locations.

https://www.digitec.ch/en/page/digitale-souveraenitaet-warum-wir-unseren-devs-mehr-vertrauen-als-big-tech-40316

Edit: I hope this is not considered offtopic, as they greatly explain why they selfhost and what opensource software they use.

https://redd.it/1oy2lyp
@r_opensource
FOSS Discord Alternative - Online Division

I'm working with a small team on a native open source Discord alternative. It's still pretty bare-bones we just introduced some small features like instant messaging & markdown messages. Check it out & maybe send some patches :)

Client repo:
https://github.com/onlinedi-vision/od-client

Website:
https://onlinedi.vision/

Github org:
https://github.com/onlinedi-vision/

https://redd.it/1oy3btm
@r_opensource
Is there any app or software available to track any security announcement, release etc. for selected app or software?

Currently, I am managing those by individually adding a repository or forum topic to watch list. Thank you for the time.

https://redd.it/1oy7snn
@r_opensource
Open source full satellite designs

We made a list of opensource PocketQube satellite designs. A few of them have already flown to space. Might be a fun project as they are small and low cost https://www.albaorbital.com/open-source-pocketqube

https://redd.it/1oybfsx
@r_opensource
⚙️ Big Data Tools Every Engineer Should Know (Zeppelin, Superset, Metabase, Druid, Kafka)

Explore open-source Big Data tools that power real analytics pipelines — all with hands-on video tutorials 👇

📈 Visualization & Dashboards

[Apache Zeppelin – Big Data Visualization Tool](https://youtu.be/yY1TH0swtA0)
HR Analytics Dashboard in Apache Superset
[Metabase Overview & Projects](https://youtu.be/Wu6MhJyKPC4)
Install Superset using Docker
[Metabase on Docker (Hands-On)](https://youtu.be/tCCw0Fnssfw)

🐘 Data Infrastructure

Running Apache Druid on Windows
[Kafka Producer/Consumer Tutorial](https://youtu.be/Cbzk_n7KN5w)
Kafka Performance Testing

Which visualization tool do you prefer — Superset, Zeppelin, or Metabase?



https://redd.it/1oye6p2
@r_opensource
Guidance needed ! New to open source.

Hey folks, I am an undergrad who wants to start with open source. I am not much into the dev side. I mostly work with building ML models working on kaggle. How should I start with open source particularly in field of AI/ML?
Also I have heard about gsoc being a good opportunity, any help on that will also be great.

https://redd.it/1oyfis9
@r_opensource
No-Trust Protocol for Backtesting Systematic Trading Algorithms

TL;DR: Backtesting trading algorithms lacks a transparent, reproducible standard. Results can’t be reliably verified. Could a no-trust, open protocol help?


Backtesting is the foundation of systematic trading algorithms — yet there’s still no open, verifiable standard for how backtests should be recorded, structured, reproduced, or audited. Everyone seems to be using their own JSON/CSV formats. You can usually read another person’s backtest output, but you can’t reliably verify it.

I’m thinking about a no-trust protocol: a specification defining how backtests should be logged, hashed, documented, and reproduced. It’s not a product or a platform, just an open protocol anyone can implement.

Key ideas could include:

fixed, open schemas for inputs and outputs

cryptographic consistency checks

required metadata for full reproducibility

deterministic execution guidelines

fully open-source reference tools

complete auditability, zero-trust assumptions


A decentralized, peer-to-peer implementation could ensure backtest data remains publicly verifiable while avoiding central control. The protocol would need to remain neutral and non-commercial to preserve its integrity.

I’m just a beginner exploring this idea, so this is more a thought than a proposal. Does anyone know if something like this already exists?

https://redd.it/1oydfml
@r_opensource
Is there a Topaz Video Alternative for Linux

Hello! Im looking for a Topaz alternative for Linux. I already found a similar post but it's 3 years old and I think things probably changed and it was about Topaz Pictures: https://www.reddit.com/r/opensource/comments/uwm4vx/comment/iluf9lu/?utm\_source=share&utm\_medium=web3x&utm\_name=web3xcss&utm\_term=1&utm\_content=share\_button

So are there any video alternatives for linux?

Thank you!

https://redd.it/1oyi3kt
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