QuickBEAM is a JavaScript runtime embedded inside the Erlang/OTP VM.If you’re building a full-stack app, JavaScript tends to leak in anyway — frontend, SSR, or third-party code.QuickBEAM runs that JavaScript inside OTP supervision trees.Each runtime is a process with a `Beam` global that can: - call Elixir code - send/receive messages - spawn and monitor processes - inspect runtime/system stateIt also provides browser-style APIs backed by OTP/native primitives (fetch, WebSocket, Worker, BroadcastChannel, localStorage, native DOM, etc.).This makes it usable for: - SSR - sandboxed user code - per-connection state - backend JS with direct OTP interopNotable bits:- JS runtimes are supervised and restartable - sandboxing with memory/reduction limits and API control - native DOM that Erlang can read directly (no string rendering step) - no JSON boundary between JS and Erlang - built-in TypeScript, npm support, and native addonsQuickBEAM is part of Elixir Volt — a full-stack frontend toolchain built on Erlang/OTP with no Node.js.Still early, feedback welcome.
FL score
out of 100
Verdict
medium confidence
Competition
3
competitors found, emerging market
Trend
No signal yet
QuickBEAM offers a highly innovative, integrated JavaScript runtime within Erlang/OTP, solving significant pain for a niche but critical developer audience, but faces extreme build complexity for a solo founder.
The pain
The gap
Build angle
Strengths
Questions about this idea?
FlyBot reads the scoring and gives you a second opinion on “QuickBEAM – run JavaScript as supervised Erlang/OTP processes”.
Risks
Next steps
Fly Labs Method
Is the pain real, is there a gap, is it the right time, can one person build it.
High potential if the technical hurdle can be overcome; addresses a clear, specific pain for a niche but important audience, but the build complexity for a solo builder is extreme.
Value Equation
Dream outcome and how likely it feels, against the time and effort it costs.
A high-value, differentiated technical product for a niche market with good growth, but very high build complexity and a long path to monetization.
One-Person Business
Curiosity pull, identity fit, and a path from free value to paid for a solo creator.
A clear problem for a niche audience, but extremely complex to build and monetize as a solo venture.
Viral Frameworks
Hook strength, shareability, and how cheaply it can be tested.
Strong value proposition and specific audience, but challenging business model, high technical risk, and not ready for quick validation.
Builder Lens
Evidence the problem exists, timing, defensibility, and a model that fits on a napkin.
Strong core problem and desperate users, but the MVP is still a significant technical challenge.
Why this verdict
Five lenses, one composite. How scoring works
The angle
This weekend
Who is already there, emerging market
A minimal Erlang VM that runs unmodified BEAM binaries on small systems like MCUs, supporting a subset of ErlangVM features.
Pricing: Open source (Free)
An Erlang-inspired actor system for WebAssembly, allowing multiple programming languages to run in a fault-tolerant environment.
Pricing: Open source (Free)
An older project that aimed to integrate V8 (JavaScript engine) with Erlang, allowing JavaScript to interact with Erlang's messaging system.
Pricing: Open source (Free)
What they charge
Recent news
Hacker News, March 29 2026
GitHub, March 31 2026
YouTube, March 31 2026
daily.dev, March 30 2026
Market signals
The market for integrating JavaScript runtimes directly into the Erlang/OTP VM appears to be a niche, but growing, area driven by the desire to leverage Erlang's fault tolerance and concurrency with the widespread use of JavaScript. Recent activity around QuickBEAM suggests renewed interest in this specific problem space. While there isn't a large number of direct competitors, the general trend towards polyglot persistence and leveraging the strengths of different runtimes (like the BEAM for reliability) is a key trend. No specific large funding rounds were identified for direct competitors, but the underlying Erlang/Elixir ecosystem sees ongoing development and adoption, which indirectly supports such innovations.
What frustrates people
Last summer we faced a conundrum at my company, Tiger Data, a Postgres cloud vendor whose main business is in timeseries data. We were trying to grow our business towards emerging AI-centric workloads and wanted to provide a state-of-the-art hybrid search stack in Postgres. We'd already built pgvectorscale in house with the goal of scaling semantic search beyond pgvector's main memory limitations. We just needed a scalable ranked keyword search solution too.The problem: core Postgres doesn't provide this; the leading Postgres BM25 extension, ParadeDB, is guarded behind AGPL; developing our own extension appeared daunting. We'd need a small team of sharp engineers and 6-12 months, I figured. And we'd probably still fall short of the performance of a mature system like Parade/Tantivy.Or would we? I'd be experimenting long enough with AI-boosted development at that point to realize that with the latest tools (Claude Code + Opus) and an experienced hand (I've been working in database systems internals for 25 years now), the old time estimates pretty much go out the window.I told our CTO I thought I could solo the project in one quarter. This raised some eyebrows.It did take a little more time than that (two quarters), and we got some real help from the community (amazing!) after open-sourcing the pre-release. But I'm thrilled/exhausted today to share that pg_textsearch v1.0 is freely available via open source (Postgres license), on Tiger Data cloud, and hopefully soon, a hyperscalar near you:https://github.com/timescale/pg_textsearchIn the blog post accompanying the release, I overview the architecture and present benchmark results using MS-MARCO. To my surprise, we were not only able to meet Parade/Tantivy's query performance, but exceed it substantially, measuring a 4.7x advantage on query throughput at scale:https://www.tigerdata.com/blog/pg-textsearch-bm25-fu
AI
Hi HN!I recently switched from a Fedora/GNOME laptop to a MacBook Air. My old setup served me well as a portable workstation, but I’ve started traveling more while working remotely and needed something with similar performance but better battery life. The main thing I missed was a simple taskbar that shows the windows in the current workspace instead of a Dock that mixes everything together.I built boringBar so I would not have to use the Dock. It shows only the windows in the current Space, lets you switch Spaces by scrolling on the bar, and adds a desktop switcher so you can jump directly to any Space. You can also hide the system Dock, pin apps, preview windows with thumbnails, and launch apps from a searchable menu (I keep Spotlight disabled because for some reason it uses a lot of system resources on my machine).I’ve been dogfooding it for a few months now, and it finally felt polished enough to share.It’s for people who like macOS but want window management to feel a bit more like GNOME, Windows, or a traditional taskbar. It’s also for people like me who wanted an easier transition to macOS, especially now that Windows feels increasingly user-hostile.I’d love feedback on the UX, bugs, and whether this solves the same Dock/Spaces pain for anyone else.P.S. It might also appeal to people who feel nostalgic for the GNOME 2 desktop of yore. I started my Linux journey with it, and boringBar brings back some of that feeling for me.
AI
### Describe the project you are working on Godot C# bindings ### Describe the problem or limitation you are having in your project For the past weeks, I've been discussing with several Unity users intending to move to Godot C# regarding dealing with the C# garbage collector. The most common complaint I hear from users is that, in Unity, allocations can trigger unexpected GC spikes into the game. In Godot, we target to make all of the high performance APIs (those that intended to be called every frame) not allocate any memory, so theoretically the GC should not be a problem. Additionally, Godot starting from 4.0, uses the Microsoft CoreCLR version of .net, which also supposedly has a better garbage collector than Unity. But in all, after several discussions with Unity users, neither is enough reassurance for them, and they would really feel safer if Godot exposed a zero allocation API. ### Describe the feature / enhancement and how it helps to overcome the problem or limitation The idea of this proposal is that Godot exposes zero allocation versions of many functions in the C# API, that users can use if they desire. Technically, this could be done from the binding generator itself, without breaking compatibility, and without doing any modification to Godot itself. ### Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams **WARNING** I am not familiar with C#, so take this as pseudocode. Imagine you have two functions exposed as to C#: ```C# void MyClass.SetArray( Vector2[] array); Vector2[] MyClass.GetArray(); ``` This works and is pretty and intuitive. However, it has two problems: * GC is allocated on return * Memory is copied to Godot native formats every time there is a call. The idea is to add NoAlloc versions, which can be generated directly by the binder automatically when required: ```C# void MyClass.SetArrayNoAlloc( Godot.Collections.PackedVector2Array array); void MyCl
AI