Open Source Screen Studio Alternative (Linux/Windows/macOS)

Link: https://github.com/tamnguyenvan/screenarc

https://redd.it/1qbk775
@r_opensource

I built a FreeMarker extension for Zed editor (with tree-sitter grammar)

Hey everyone! I just released a FreeMarker syntax highlighting extension for Zed editor, built with a custom tree-sitter grammar.

**What is this?** FreeMarker is a Java template engine that’s been around since 2000.
It’s still **widely used in enterprise systems**, Spring-based applications, and well-known projects like **Keycloak**, where it powers themes, login pages, and emails.

Despite that, modern editor support has been pretty lacking.

**Why Zed?** I recently switched to Zed and was frustrated by the lack of FreeMarker support. Since Zed uses tree-sitter for syntax highlighting, I decided to build a proper grammar from scratch rather than rely on regex hacks.

**A small disclaimer**:

I’m not an expert in grammar design or Rust, so the tree-sitter grammar is very much a learning-by-doing effort. That said, it’s been working well for real-world templates — and PRs, suggestions, and improvements are more than welcome.

**Features:**

* Full tree-sitter-based parsing (accurate even with complex nested structures)
* Both `<#...>` and `[#...]` syntax styles
* HTML injection for mixed templates
* All FreeMarker directives: conditionals, loops, macros, includes, built-ins
* Smart bracket matching and auto-closing

**Links:**

* GitHub: [https://github.com/debba/zed-freemarker](https://github.com/debba/zed-freemarker)
* Tree-sitter grammar: [https://github.com/debba/tree-sitter-freemarker](https://github.com/debba/tree-sitter-freemarker)

Built this mainly for my own projects, but figured others stuck maintaining FreeMarker templates might appreciate it. Let me know if you find any bugs or have feature suggestions!

https://redd.it/1qbpjhp
@r_opensource

Nametag - An open source personal relationships manager
https://nametag.one/

https://redd.it/1qbpvyl
@r_opensource

It's been a year since I published my first real FOSS project, here's what I learned

Hello everyone,

It has been a bit more than a year since I released Cyberbro.
It is my first real open source project.
The tool helps cybersecurity people, and anyone, to get information about IPs, domains, hashes and Chrome extension IDs.

At the beginning I was focused on stars.
The project now has around 500 stars, but I learned that stars are not the most important thing, even if this can help for visibility on Github.


What matters is to keep going, make releases, and accept that your code will not be perfect.
I used AI sometimes. If you use AI, please use an MIT license (this is my opinion, I'm very open to discuss about it).

I also created an MCP for the project, since it' AI times, right?
It works well, but I still prefer the real version.
Sometimes you do not need AI. You just need well presented data (we don't need to always use AI).

I tried to promote the project on Twitter and Mastodon.
It did not help much.
What helped more was creating a public demo and letting people try it.

If you build a web app, protect your server.
Do not forget this part!

For the repository, explain how people can report issues.
Be nice and don't be mean to newcomers.
I now have four maintainers. Two are active, and that is already a lot.
This is why open source is great.
One day you see that someone liked your project enough to use it and improve it.

Another nice thing is when people talk about your tool.
Sometimes I see posts on LinkedIn from security researchers who mention Cyberbro.
It feels good.
It also opens your world.
I met people from many countries.
The first person who reported issues was from Iran.
I got contributions from Germany, Texas, Sweden and more.

A small warning.
Be careful with monetization if your tool is niche. I was proposed to be sponsored.
It can look like a good idea, but people will expect results and you may lose your freedom.

I tried to write good documentation.
I take care of pull requests and issues.
I try to stay polite.
It's starting to pay off!

My advice is simple: your project will take time to grow.
There is a lot of noise today.
Do something that helps you first.
Then share it.

Thanks for reading!


I hope this post is useful.

https://redd.it/1qbrr0x
@r_opensource

Building a map-first CRM — looking for open-source-minded testers + contributors (repo soon)

Hi I’m building a lightweight CRM + sales funnel app with a map-based view (visualize leads/customers by location + pipeline/follow-ups). I’m trying to build it with an open-source mindset: transparent roadmap, public issue tracker, and a contributor-friendly setup.

Before I publish anything publicly, I’m looking for a small group of people who can help with:

* **Product feedback** (what’s missing, what’s confusing, what should be removed)
* **Self-hosting expectations** (docs, env setup, database choice, config)
* **Contributor experience** (what would make you *want* to contribute?)

If you’re interested, comment with your use case (field sales / local services / agency / etc.) and what you’d expect from an OSS-friendly CRM project. I’ll DM a link to the early build.

I’m not trying to promote — I genuinely want feedback from people who care about open collaboration and sustainable project practices.

https://redd.it/1qbsett
@r_opensource

Student contributor to CPython, NumPy, Pandas & Statsmodels looking to collaborate on open- source

Hii everyone

I’m a CS undergraduate who’s been actively contributing to open source over the past several months, mainly in the Python, machine learning, and scientific computing ecosystem.

I’ve contributed to projects including:

- CPython
- NumPy
- Pandas
- Statsmodels
- JAX-ml
- TensorFlow Quantum
- Apache Iceberg (Python)
- pgmpy
- sktime
- Data-8 Datascience
- Academy Software Foundation – OpenCue

I’m now looking to move beyond one off PRs and get involved more deeply, whether that’s --

"regularly contributing to a project"
"helping maintain a module"
or "joining a small OSS team that needs hands"

If you maintain or are part of a Python, ML, data, or infrastructure heavy project and could use extra hands feel free to reach out.

GitHub: https://github.com/Aniketsy

Thanks, and looking forward to connecting with folks here!



https://redd.it/1qbr669
@r_opensource

AI-startup's concepts are all same with our MIT-licensed OSS projects. Is this convergent evolution? or OSS etiquette violation?
https://typia.io/articles/ai-startup-concepts-are-all-same-with-our-mit-licensed-oss-projects.html

https://redd.it/1qbwt8c
@r_opensource

I built an open-source JSON viewer after getting tired of parsing nested stringified JSON at work

At work, I spend a lot of time digging through CloudWatch logs, and a recurring pain point was dealing with stringified JSON inside JSON… sometimes nested multiple levels deep.

You know the drill:

* JSON fields that are actually strings
* Those strings contain escaped JSON
* Sometimes *that* JSON contains another stringified JSON 🙃

Manually unescaping and reformatting this over and over got old very fast.

So I decided to build a small tool that would:

* Automatically detect and recursively parse stringified JSON
* Work entirely locally in the browser (no uploads, no backend)
* Make it easier to explore, query, and transform JSON while debugging

That tool eventually grew into **JSON Lens**, an open-source, keyboard-first JSON viewer & explorer.

What it does:

* Auto-parses deeply nested stringified JSON
* Code view + tree view
* JSONPath & jq-like queries
* Export to YAML / XML / TypeScript / NDJSON
* 100% local & privacy-friendly

It started as a “scratch my own itch” project, but I figured others dealing with logs, APIs, or configs might find it useful too.

Repo: [https://github.com/vakhariaheet/json-lens](https://github.com/vakhariaheet/json-lens)
Demo : [https://json.heetvakharia.in](https://json.heetvakharia.in)

Would love feedback, feature ideas, or critiques — especially from folks who deal with logs or observability tooling a lot.

Thanks for reading!

https://redd.it/1qbyux4
@r_opensource

Are there any opensource / modable TVs?

"Smart" TVs these days have like, the Youtube App, Amazon Prime, Netflix, etc. built in. These are usually littered with ads and paid features and have proprietary app stores so you can only have software they release on there. Not naming any manufacturer in particular, but I've owned several TVs that have done this. I'd like to have:

* Ability to install games, Brave Browser and other apps that would otherwise be restricted
* Parental controls so child doesn't grab remote, open browser and open bad websites
* The ability to install an app that can stream from a NAS or Plex/Jellyfin server.

https://redd.it/1qc14hp
@r_opensource

Use Maven dependency with AGPL

Hello everyone!

I am doing my final project for my IT degree. I need to make PDFs in my backend which is Spring Boot. I found there's this Maven dependency called iText, whichs seems to make the job I need quite easily.

The issue is I see some AGPL license, and I don't understand well how it affects a "private" (private during development, public after finished) project. How does affect it to my project? Could it put my final project or university in danger?

Thanks for your time and answers :3

https://redd.it/1qc25oa
@r_opensource

SaaS AGPL fork behind subnoscription, Can we request source?

A company forked an AGPL-licensed project and is offering it as a hosted service.

Access to the service is behind a custom login (JWT/OAuth) and a subnoscription paywall. Only paying customers can reach the app at all, the original login page is removed. The login page we see is done as separate app, and interacts with AGPL app and redirect to the AGPL app. And only paying customers can see a link to download the corresponding source code as it's linked within the app.

Non-paying/public users can’t access the service or the source code, because everything is behind the subnoscription wall. Since it’s SaaS, I’m not sure whether non-users are “ennoscriptd” to the source if they can’t even reach the page where the app runs.

Does this setup violate the AGPL? If not, is there any way for non-customers to request the source code anyway?

https://redd.it/1qc44zc
@r_opensource

Open-sourcing a general morphogenesis / emergent-pattern engine

Publishing a new open-source engine that simulates emergent structure using a recursive structural-field model. No hand-written behaviors. Patterns come from the dynamics.

Includes full diagnostics, export options, and an interactive visualization interface.

Repo: https://github.com/rjsabouhi/sfd-engine
Demo: https://sfd-engine.replit.app/


https://redd.it/1qc62v3
@r_opensource

Manage third-party licenses

I am seeing much conflicting information online about the "correct" way to list all the licenses, NOTICE files, etc. of the software I would like to distribute.

I have a mobile app I am licensing under GPL-3.0-or-later and I have dependencies that use BSD-3-Clause, BSD-2-Clause, MIT, MIT-Modern-Variant, Apache-2.0, MPL-2.0, and Zlib.

I have a LICENSE file that lists GPLv3 verbatim. At the top of all my source files I put the following:

// SPDX-License-Identifier: GPL-3.0-or-later
// Copyright (C) YYYY MYCOMPANYNAME LLC

The About page on the app lists the git instance hosting my source code, my company's copyright, and the GPL-3.0-or-later section header.

I manually checked all the Apache-2.0 code and they do not have a NOTICE file (there's gotta be an automated way to do this somewhere). I believe all I have to do "add the third party licenses" and copyrights to my code now? Where do I even add them? I didn't see anything on spdx.org for this.

https://redd.it/1qc8e4w
@r_opensource

A beginner-friendly open-source Next.js app with real users and good first issues.

I recently open-sourced a small Next.js + TypeScript web app and intentionally designed it to be approachable for new contributors.

The app helps users choose houseplants based on lifestyle inputs (light, watering, care effort, pet safety). There’s no backend, no auth, and no database; everything is frontend + simple local logic, which keeps the codebase easy to reason about.

I’ve labeled a set of good first issues that focus on:
\-UI polish and spacing
\-accessibility states and affordances
\-small cleanup and consistency fixes

The goal is to make this a low-stress place for people to make their first meaningful PR on a real project.
Repo: https://github.com/AryahCodes/Houseplant-Finder

https://redd.it/1qca57d
@r_opensource

POOM - ESP32-C5 devicewith Qwiic/I2C for Adafruit sensors + built-in wireless security tools - launching tomorrow- OPENSOURCE Hardware+Firmware

👋 Small engineering team here.

We've been working on POOM – a multitool for pentesting, making..

What it does:

Sniffs Wi-Fi 6 + BLE 5.x + Zigbee/Thread/Matter simultaneously
PCAP/PCAPNG export (Wireshark-ready)
NFC + HF-RFID emulation and storage
100+ Qwiic sensor compatibility (for IoT dev)
Four modes: Maker, Beast (pentesting), Gamer, Zen
Built on ESP32-C5 (since the community asked for Wi-Fi 5Ghz)

Pocket-sized. Has unnecessary RGB LEDs because obviously.

Launching on Kickstarter in Tomorrow, see demos on our social media accounts here

https://redd.it/1qca82q
@r_opensource

Built an Unofficial Upstox Mutual Funds API

Hey folks,

I built an unofficial REST API wrapper for Upstox’s mutual fund data using Node.js and Express. Thought I’d share in case anyone finds it useful or wants to contribute.

What it does:

Fetch detailed mutual fund info (NAV, returns, holdings, etc.)
Search funds by keywords/filters
Get historical NAV data
Fast, lightweight server built with Express

Repo: GitHub – Upstox Mutual Funds API (Unofficial)

Note: It scrapes public data from Upstox MF pages. Unofficial, not affiliated with them. Please use responsibly.

Happy to get feedback or suggestions. PRs welcome!

https://redd.it/1qchn7v
@r_opensource

I built a storage engine in rust that guarantees data resilience

https://github.com/crushr3sist/blockframe-rs

Hi everyone! I wanted to share a project I’ve been working on called blockframe-rs.

It is a custom storage engine built entirely in pure Rust, designed around multi-hierarchical chunking with segmentation. My main goal was to solve reliability issues without compromising accessibility, so I’ve implemented RS erasure coding to ensure zero data loss risk, even in the event of partial corruption.

make the data actually usable, I built a service layer that integrates with FUSE (on Linux) and WinFSP (on Windows). This allows the segmented chunks to be mounted and accessed as a standard filesystem, providing full file representation transparently to the user.

I’m currently looking for feedback on the architecture and the erasure coding implementation. If you’re interested in systems programming or storage engines, I’d love to hear your thoughts!

REPOST: original got deleted :P

https://redd.it/1qcin7c
@r_opensource

Player of the non-profit student radio

Hi.
For some time now, our radio has had an application written in Flutter, which allows you to listen to our technical university's student radio station.

At the moment the app has:
Player
Displaying what program is currently on

Displaying the above information in the system player (at the very top of notifications).

A subpage with the program schedule (when launched, the application scraps the radio page with the weekly program schedule).

A subpage with statistics on how many minutes/hours you have been listening to the radio since installing the application

Push notification logic for: no connection to the streaming server, interruption of the listener's internet connection, no internet on the listener's device at startup

For those who have not accepted push notifications, a notification (widget) with these alerts appears at the top of the screen when there is a problem.

In progress:
Possibility to report an error, possibility to send information about the currently listened program via e.g. Messenger

More extensive statistics, namely the duration of the longest session, the duration of the shortest session, the day on which you listen to the radio most often

Possibility to like a program in the schedule that interests the listener and notify him that his liked program will start in e.g. 5 minutes

Now the question is, what else would be useful to add to the radio app?

https://redd.it/1qcjjzm
@r_opensource

Scoped Access for Oauth Tokens · nextcloud/server - Needs your upvote!
https://github.com/nextcloud/server/issues/26233

https://redd.it/1qcjg9x
@r_opensource

Open source CLI - detect environment variables JS/TS

Have you ever run into issues with enviroment variables in JS/TS projects?

I have, a lot - especially issues that only shows up at runtime or fail silently.

That’s why i build this npm CLI package.

It’s optimized for Sveltekit and Next.js but also works well in moderen JS/TS projects

I’m at a point now where i’m trying to make it more open source friendly - så any feedback on how i can improve that is very welcome.

GitHub link: https://github.com/Chrilleweb/dotenv-diff

https://redd.it/1qclncq
@r_opensource

I built an open-source OAuth Mock Server for E2E testing

Testing "Login with X" in E2E tests is a nightmare because of 2FA, Captchas, and rate limits. I got tired of expensive tools or complex local setups, so I built a free, drop-in replacement.

How it works:

You just swap your provider URL (e.g., Google's auth URL) with in your test environment. It simulates the happy path and redirects back to your app successfully. [`https://oauth.kogiqa.com/`](https://oauth.kogiqa.com/)

Features:

* Works with Google, Microsoft, GitHub, Facebook, etc.
* Custom Data:You can inject mock user info via URL params (e.g., `?name=QA_Bot&email=qa@example.org`).
* 100% Free & Open Source.

Check it out and let me know if I missed any providers you need!

Repo: [https://github.com/atagon-GmbH/oAuth-mock](https://github.com/atagon-GmbH/oAuth-mock)

https://redd.it/1qcmx1y
@r_opensource