SXO: High-performance server-side JSX

SXO is a multi-runtime tool for server-side JSX that runs seamlessly across Node.js, Bun, Deno, and Cloudflare Workers. It also includes SXOUI, a UI library similar to shadcn/ui.

- https://sxoui.com
- https://github.com/gc-victor/sxo

https://redd.it/1pkml26
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My first, small, open source project: MonoBitPainter
https://github.com/xgenium/MonoBitPainter

https://redd.it/1pklwc0
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Open Source in Focus: 4 Tools That Keep Systems Running | The JetBrains Blog
https://blog.jetbrains.com/blog/2025/12/12/open-source-in-focus-4-tools-that-keep-systems-running/

https://redd.it/1pkpb08
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Built an open-source Azure Digital Twins alternative on PostgreSQL + Apache AGE

I created an open-source implementation of Azure Digital Twins APIs using PostgreSQL + Apache AGE. It started as a way to avoid vendor lock-in, but I'm expanding it for broader graph database use cases.

**Why PostgreSQL:**

* Combine with other extensions (pgvector for AI embeddings, PostGIS for spatial data)
* Reliability and existing tooling

**Technical approach:**

* Azure Digital Twins REST API compatibility (use official Azure SDKs)
* Apache AGE for graph queries (Cypher support)
* DTDL schema validation

**Use cases beyond Azure DT:**

* Digital twin infrastructure (IoT, smart cities, industrial systems)
* AI agent knowledge bases (semantic relationships without RDF)
* Complex relationship modeling (organizational hierarchies, dependencies)

**Architecture choices I'm curious about:**

* Built operator pattern instead of CRDs (simpler to extend?)
* REST + Cypher query interfaces (flexibility vs. complexity?)
* PostgreSQL foundation vs. purpose-built graph DB

**GitHub:** [https://github.com/konnektr-io/pg-age-digitaltwins](https://github.com/konnektr-io/pg-age-digitaltwins)
**Hosted:** [https://konnektr.io](https://konnektr.io)

Would love feedback your feedback.

https://redd.it/1pkot9b
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Luego - a minimal read-it-later iOS app

Hey folks! I've been building this read-it-later app for myself and wanted to share it here as it's open-source. https://github.com/esoxjem/Luego

You can also grab it via TestFlight and receive updates as I release them - esoxjem.github.io/Luego/

Previously, I was a big Pocket user but Mozilla decided to shut it down. I switched to Omnivore but that seems to be shutting down as well. I don't feel like paying monthly, so I decided to "home-cook" it, inspired by Robin Sloan.

As everything is happening on device, the best things to read are blog posts and websites that have clean and simple HTMLs - not news sites and others that do a lot of crap.

I'm using it regularly to read and hope you will find it useful too.

Cheers!

https://redd.it/1pkri99
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We got tired of rogue AI agents, so we built Idun, an open source platform for agents governance ⭐️

Hey everyone!

We are four friends, all working in the industry, we kept hitting the same wall:
cool AI agents but zero real governance.

So we built **Idun** **Agent** **Platform**, an open-source control plane to govern all your AI agents in one place, on your infra:

* Self-hosted (VMs / k8s / whatever cloud you trust)
* One place for **agents, environments, keys, configs**
* **Governance**: RBAC, separation of envs, audit trail
* **Observability**: see what each agent did, which tools it called, where it failed
* Model-agnostic (plug different LLM providers, including “sovereign” ones)

Check out our GitHub: [Idun Agent Platform](https://github.com/Idun-Group/idun-agent-platform)

It’s early, but already running in a few real setups, we're looking for feedbacks and just devs' testing our solution, and a few ⭐️ if we do deserve it!

Thank you so much for looking at it everyone!

https://redd.it/1pkts6p
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Axe - A Programming Language with Parallelism as a Core Construct, with no GC, written 100% in itself, able to compile itself in under 1s.
https://github.com/axelang/axe

https://redd.it/1pkwox9
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Looking for tools like Base44 or Lovable that are open source.?

Hello all.

Is there an open source app builder that is using AI, something like Base44 or Lovable?

But with the same level of features?

https://redd.it/1pkxryk
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Chrome extension to create and download gifs and clips out of youtube videos

This is an open source chrome extension that can be used to create and download GIFs and clips from Youtube videos.

Huge thanks to the creator of YoutubeExplode as it is what enables this application to exist.

Known issues:
Currently in the backend the entire video is downloaded first and then the clip is extracted as per inputs. I'm working on this problem, so that only the specific segment required will be downloaded instead of the entire video.

Repo Link: https://github.com/sagv7824/yt-gif-clip

Suggestions and feedback are welcome and appreciated! Thanks!!

https://redd.it/1pl2x32
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TrailBase 0.22: Open, single-executable, SQLite-based Firebase alternative now with multi-DB

TrailBase is an easy to self-host, sub-millisecond, single-executable FireBase alternative. It provides type-safe REST and real-time APIs, WASM runtime, auth & admin UI. Comes with type-safe client libraries for JS/TS, Dart/Flutter, Go, Rust, .Net, Kotlin, Swift and Python. Its WASM runtime allows authoring custom endpoints and SQLite extensions in JS/TS or Rust (with .NET on the way).

Just released v0.22. Some of the highlights since last time posting here include:

Multi-DB support 🎉: record APIs can be backed by \`TABLE\`/\`VIEW\`s of independent DBs.
This can help with physical isolation and offer a path when encountering locking bottlenecks.
Filtered change subnoscriptions.
Mobile-friendly and more polished admin UI.
Kotlin client
Many more improvements, e.g.: WASM execution model & custom SQLite functions, ...

Check out the live demo, our GitHub or our website. TrailBase is only about a year young and rapidly evolving, we'd really appreciate your feedback 🙏

https://redd.it/1pl22j2
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AI Voice Clone with Coqui XTTS-v2

https://github.com/artcore-c/AI-Voice-Clone-with-Coqui-XTTS-v2



https://redd.it/1pl61wr
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Is there a project that can proudly say we are good at naming things?

Most programmers say they are bad at naming things. And since naming things is hard I think they are right, but is there an open source project that can proudly say they are good at naming things? I would like to take a look at some code that has really good names in code, config, project name, etc.

https://redd.it/1pl6d0s
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Bitwave: Is This the Future-Proof Audio Format Developers Need?

# The New Audio Standard: High Fidelity and Dynamic

Bitwave is an ambitious, open-source project aiming to redefine the modern audio file format. The format is built with a robust hybrid architecture utilizing Python for the SDK/CLI and Rust for high-performance core processing. This foundation targets high-fidelity sound, multi-track support, and, crucially, developer ease-of-use, directly addressing the limitations of legacy containers in the immersive audio landscape. Bitwave positions itself as a solution for dynamic content that needs to adapt in real-time.

# Architectural Deep Dive: Spatial and Adaptive

The core .bwx format’s file structure is its true innovation. It mandates distinct blocks for metadata, including a crucial SPATIAL_BLOCK for x, y, z positional data and a META_BLOCK that stores essential information like BPM. This intrinsic inclusion of dynamic and spatial data is key to its "future-proof" claim. This design enables applications like dynamic tempo adjustment and 3D spatial audio playback without relying on external sidecar files, making the content intrinsically self-describing and ready for modern playback engines.

# CLI and SDK: A Complete Tooling Ecosystem

The project delivers a comprehensive toolkit for creators and coders. The Python SDK offers seamless data manipulation via NumPy integration for programmatic workflows. Concurrently, the powerful Command Line Interface (CLI) simplifies complex tasks for power users, supporting operations like analysis (BPM, spectral, fingerprinting), batch processing, format conversion (WAV, FLAC, OGG), and advanced audio effects (reverb, pitch shift). Bitwave is not just a container; it's a complete, modern audio processing pipeline, licensed under MIT and ready for community adoption and contribution.

Check out the project: https://github.com/makalin/Bitwave

https://redd.it/1pldy7x
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Built another Geoguessr alternative
https://geoguesslite.com

https://redd.it/1plf4a8
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The Law of Discoverability - open source software is in desperate need of this principle
https://fishshell.com/docs/current/design.html#the-law-of-discoverability

https://redd.it/1plg6bq
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Golocron - Plug and Play Blogging and Wiki System for Go Backends
https://github.com/cookiengineer/golocron

https://redd.it/1plfoo3
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pdf-sign – Adobe-compliant PDF signing with GPG Agent
https://github.com/0x77dev/pdf-sign

https://redd.it/1plfh5g
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Simple Web CSVx Editor

For simple spreadsheet operations, I've always considered a simple Excel-style application. Last night, I created a simple web-based CSVX editor-viewer using "vibe coding."

It's possible to prevent libraries like Pandas from reading comments, so using them in these situations wouldn't be harmful, but unfortunately, MS Office or LibreOffice don't have native support for this, making it difficult to add.

https://github.com/alorak/csvx
https://csv.alorak.com/

https://redd.it/1plioit
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Defending against runtime attacks what works?

Runtime threats app-layer, supply chain, and identity often evade standard security measures.

Here’s a blog that explains these attack vectors in a simple way: link

What strategies do you use to detect or prevent runtime attacks?

https://redd.it/1pljhhp
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RelicBin - Open source pastebin with s3 storage, ansi, text, log, code, html, markdown, pdf, excalidraw, images rendering, bookmarks && comments
https://github.com/ovidiuvio/relic

https://redd.it/1plii99
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any-sync-bundle v1.1.3: Self-hosting for Anytype is a personal knowledge base
https://github.com/grishy/any-sync-bundle

https://redd.it/1plmpcp
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