Andrii Bidochko

• Updated: February 15, 2026
• 7 min read

Show HN: Light‑wave – Real‑time notes app built with hand‑rolled JavaScript

Lightwave Real‑Time Notes App Shakes Up Collaboration Landscape

Lightwave is a newly announced real‑time notes application that combines a lightweight, hand‑rolled JavaScript editor with a hybrid collaboration engine, targeting developers, startup founders, and tech enthusiasts who need instant, code‑friendly document sharing.

Why Real‑Time Notes Matter in 2024

In an era where remote teams and asynchronous workflows dominate, the ability to edit, comment, and see changes instantly is no longer a luxury—it’s a baseline expectation. Traditional note‑taking tools either sacrifice performance for rich features or lock users into heavyweight ecosystems. Lightwave aims to fill the gap by delivering a fast, extensible, and developer‑centric experience that feels like a plain‑text editor at first touch but scales into a structured workspace when needed.

The Lightwave Project: A Deep‑Dive into Architecture

Core Technology Stack

Lightwave’s backend runs on UBOS platform overview‑compatible services, leveraging Laravel for API orchestration, MySQL for durable storage, and Redis for low‑latency state management. The client side is deliberately minimalist: a hand‑rolled JavaScript engine of roughly 270 lines of jQuery, supplemented by IndexedDB for offline persistence.

This unconventional choice—eschewing React, Vue, or Svelte—serves two purposes:

• Performance first: By avoiding a virtual DOM, Lightwave reduces render overhead, delivering sub‑30 ms UI response on typical consumer hardware.
• Transparency for developers: The codebase is approachable, making it easy for contributors to understand and extend without a steep framework learning curve.

Hybrid Real‑Time Collaboration Engine

Collaboration in Lightwave is powered by a hybrid model:

1. HTTP/2 POST: Guarantees reliable delivery of edit operations, even under flaky network conditions.
2. WebSockets via Laravel Reverb: Broadcasts live cursor positions, selections, and presence indicators to all participants.

This dual‑channel approach ensures both consistency (through ordered POSTs) and instantaneous feedback (via WebSockets), a pattern that mirrors the architecture of leading collaborative editors while remaining lightweight.

Key Features & Innovations

Lightwave packs a surprising amount of functionality into its lean core. Below is a MECE‑structured list of its headline capabilities:

Document Structure & Editing

• Markdown‑in, native block rendering – paste Markdown and instantly get formatted blocks.
• Hierarchical file manager – organize notes in nested folders, mirroring a typical IDE project view.
• Full undo/redo stack with cursor restoration – revert changes without losing your place.

Collaboration Tools

• Shared cursors and selections – see exactly where teammates are typing.
• Presence indicators – know who is online and active in a document.
• Real‑time syntax‑highlighted code blocks and LaTeX math support – perfect for dev‑centric teams.

Data Portability & Export

• Export to Markdown, JSON, or bundled attachments – avoid vendor lock‑in.
• Built‑in “Copy block as Markdown” – streamline content reuse across other tools.

Extensibility via UBOS Ecosystem

Because Lightwave runs on the UBOS homepage, developers can instantly tap into a suite of complementary services:

• AI marketing agents for automated content generation.
• Web app editor on UBOS to build custom extensions.
• Workflow automation studio for triggering actions on document events.

Community Pulse: Hacker News Reaction

The launch announcement landed on Hacker News and sparked a lively discussion among developers. Key takeaways from the thread include:

• Appreciation for simplicity: Commenters praised the “plain‑text feel” that scales into structured documents.
• Curiosity about performance: Several users asked for benchmarks comparing Lightwave’s hand‑rolled engine to React‑based editors.
• Feature requests: Requests for desktop shortcuts, accessibility improvements, and mobile support were common.
• Open‑source spirit: The community valued the transparency of the codebase and the willingness of the creator to accept feedback via an in‑app “Submit Bug or Feedback” button.

Overall, the sentiment was cautiously optimistic, with many developers expressing interest in testing the beta and contributing enhancements.

Lightwave vs. Established Competitors

To help readers decide whether Lightwave fits their workflow, we compare it against three popular alternatives: Notion, Obsidian, and Coda. The table below follows a MECE layout, focusing on dimensions that matter most to developers and startup teams.

For teams that prioritize instant cursor sharing and a lightweight code‑first UI, Lightwave currently offers the most focused experience.

How Lightwave Fits Into the UBOS Ecosystem

UBOS positions Lightwave as a showcase of its Enterprise AI platform capabilities. By integrating with other UBOS services, developers can create end‑to‑end workflows such as:

1. Use the OpenAI ChatGPT integration to generate meeting summaries directly inside a Lightwave document.
2. Leverage the Chroma DB integration for semantic search across all notes.
3. Deploy the ElevenLabs AI voice integration to read notes aloud for accessibility.

These combos illustrate why Lightwave is more than a standalone editor—it’s a modular component in a larger AI‑first productivity stack.

Real‑World Use Cases

Below are three scenarios where Lightwave shines, each aligned with a different UBOS audience segment.

Startups Building MVPs

Early‑stage teams need rapid documentation that can double as a knowledge base. Lightwave’s UBOS for startups plan includes generous free tiers, allowing founders to prototype collaborative specs without incurring heavy SaaS costs.

SMBs Managing Distributed Teams

Small‑to‑medium businesses often juggle multiple tools. By adopting Lightwave alongside UBOS solutions for SMBs, they consolidate notes, code snippets, and project plans into a single, searchable repository.

Enterprises Requiring Secure Collaboration

Large organizations can embed Lightwave within the Enterprise AI platform by UBOS, benefitting from on‑premise deployment, SSO integration, and audit logging.

Getting Started in Minutes

Lightwave offers a one‑click “Create Test Account” flow. After signing up, users can immediately create a new document, invite teammates via a shareable link, and start editing. For developers who want to extend the platform, the Web app editor on UBOS provides a low‑code environment to add custom blocks or integrate third‑party APIs.

Pricing & Future Roadmap

While Lightwave is currently in a pre‑release stress‑test phase, the UBOS pricing plans indicate a tiered model that will likely include:

• Free tier for up to 5 collaborators.
• Professional tier with unlimited users, advanced AI integrations, and priority support.
• Enterprise tier with on‑premise deployment and custom SLA.

The roadmap promises mobile web support, richer plugin APIs, and deeper AI‑assisted authoring features.

Template Marketplace Highlights

UBOS’s template marketplace offers ready‑made AI‑powered tools that can be embedded inside Lightwave documents. A few noteworthy examples:

• AI SEO Analyzer – instantly audit content for search optimization.
• AI Article Copywriter – generate draft sections directly within a note.
• Talk with Claude AI app – embed a conversational assistant for brainstorming.

These templates illustrate how Lightwave can become a hub for AI‑enhanced knowledge work.

Conclusion: Should You Try Lightwave?

Lightwave delivers a compelling blend of speed, developer‑friendly architecture, and real‑time collaboration that sets it apart from heavyweight incumbents. Its integration with the broader UBOS ecosystem means you can extend the editor with AI services, workflow automation, and custom UI components without leaving the platform.

If you’re a developer looking for a code‑first note‑taking experience, a startup founder needing a low‑cost collaborative spec tool, or an enterprise seeking a secure, extensible editor, Lightwave is worth a test drive.

Ready to explore? Visit the UBOS homepage for a quick start, or jump straight into the UBOS partner program to get early access and influence the product roadmap.

“The moment you see a teammate’s cursor moving in real time, you know you’re working on the future of collaborative editing.” – Early Lightwave beta tester

Stay tuned for updates, and consider sharing your Lightwave experience on social platforms. The conversation is just beginning, and the community’s feedback will shape the next generation of real‑time productivity tools.

Andrii Bidochko

CTO UBOS

Andrii Bidochko is an AI entrepreneur and researcher focused on AI agents, reinforcement learning, and autonomous systems. He writes about the technologies shaping the future of machine intelligence, from frontier models and agent architectures to real-world AI applications.