Dropstone v3 introduces Horizon Mode, a recursive swarm architecture that breaks the "Linearity Barrier" in AI coding. Powered by the D3 Engine, it replaces linear token prediction with Divergent Trajectory Search—simulating 10,000+ potential futures to prune errors before they happen. Features Semantic Entropy Tracking for hallucination detection, Flash-Gated Consensus, and a Neuro-Symbolic Runtime that separates reasoning from retention.
This is the 4th launch from Dropstone. View more
Dropstone 3
Launching today
Dropstone is the first multiplayer AI workspace. v3.0.5 adds Share Chat: send a link to code with humans & agents in real-time. Features infinite context (D3 Engine), persistent memory & background swarms. Built on original research, not a wrapper.
Free
Launch Team
Dropstone
Hi Product Hunt! 👋 I’m one of the makers at Blankline (the research lab behind Dropstone).
We noticed a critical problem with tools like Cursor and Claude Code: They are single-player. You code alone. If you get stuck, you paste snippets into Slack. If you're a founder hitting the "70% wall," you're stranded.
Dropstone 3 is the first multiplayer AI workspace. With today's release, we are launching Share Chat:
🔗 One Link: Generate a URL for your local workspace.
⚡ Instant Join: A senior dev, designer, or client joins instantly.
🧠 Shared Brain: Everyone shares the same AI context and live preview.
This is not a wrapper. We are a research lab building proprietary infrastructure:
D3 Engine: Virtualizes context (50:1 compression) for infinite memory.
Horizon Mode: Background agent swarms that fix bugs asynchronously while you sleep.
Research: We publish our papers openly (check blankline.org/research).
We’re live in the comments to answer questions about our compression architecture or the "70% wall." Let us know what you think! 👇
@santosharron Wow, that sounds really good for extreme programming, like era v2.0. And what happened if 2 people start prompting in different directions? Will there be a context drift?
Dropstone
@aleksanadr_lavrinenko We solve that by serializing the context. It’s strictly chronological: whoever interacts first sets the state, and the simultaneous user’s generation will include that previous context instantly. No drift, just a single shared timeline.
That Slack paste loop is brutal. Live Share fixes the editor, but it doesn't share the agent context. Dropstone 3 Share Chat feels like it closes that gap vs Cursor or Claude Code. Does the share link have permissions and secret redaction baked in? If yes, it's a real team tool.
Dropstone
@piroune_balachandran Yes, Dropstone 3 includes robust role-based permissions for Editors and Viewers, along with automated redaction to ensure secrets and sensitive keys stay out of the shared agent context.
Trend based research and the engage feature make a great loop. If SuperX shows the why behind each inspiration pick and timing suggestion, it'll stay reliable even when X shifts the rules. A simple decision log makes it stick.