Describe it. Build it. Ship it.
Business owners chat. Developers code. AI agents build.
Same project, real-time, one workspace.
Business owners describe features in chat. Developers review the code. AI builds it all in real-time.
Built on open research from Blankline
Read our papers on agentic systems and recursive swarms
Real-Time Multiplayer Chat
Your whole team. One AI.
Every message shared.
Everyone chats with the same AI in real-time. When Priya asks for a login page, Marcus already has that context. The AI remembers Day 1 decisions on Day 100.
Add a login page with Google sign-in and redirect to dashboard after login.
Created login page with Google OAuth. Added redirect to /dashboard.
Now add Stripe payment to the checkout — use the same auth session from the login.
Integrated Stripe in checkout.ts. Reusing existing Google OAuth session as requested.
SHARED CONTEXT: Marcus didn't need to explain authentication. The context has full workspace history from Priya's interaction 2 minutes ago.
Trusted by engineering teams
The context engine.
Powering the next generation.
Dropstone powers software development for teams that demand precision, scale, and shared intelligence.
"We moved our entire core banking infrastructure to Dropstone. The D3 Engine's ability to maintain context across 400+ microservices without hallucinating is something we haven't seen in any other tool."
"Horizon Mode changed how we ship. I describe the feature in chat, and three autonomous agents coordinate to build the frontend, backend, and tests simultaneously. It feels like I cloned my best senior dev."
"The multiplayer aspect is widely underrated. Being able to have my product manager, myself, and an AI agent all in the same editor session fixed our 'lost in translation' issues overnight."
"Other tools forget what we discussed yesterday. Dropstone's Workspace Memory actually learns our architectural patterns. It stopped suggesting libraries we banned months ago."
Different
Context Engineering.
We didn't just wrap an API. We published the research on retrieval-augmented code generation.
Semantic Memory Indexing
Graph-based memory system that maps relationship density between files, retrieving context with 99.8% precision.
Dynamic Context Pruning
Real-time AST analysis prunes irrelevant code branches before inference, reducing token usage and hallucinations.
BlanklineBeyond Retrieval-Augmented Generation: Solving the Temporal Event Horizon for Unlimited Context
Blankline Research Integrity Council
Role-Based Access
Everyone sees what they need.
Nothing more.
Like Figma adapts for designers vs developers, Dropstone adapts for business owners vs engineers. Same workspace, different interfaces.
Business View
CHATFor founders & non-technical teams
Chat with AI in plain English. See a live preview of your app being built. Never touch code.
Developer View
</>For engineers who want full control
Full VS Code-compatible editor, terminal, git integration. Review AI-generated code before it ships.
AI Agent View
AITransparent agent activity
See what agents are working on, modified files, test results, and security scans — in real-time.
Share with one link.
Control who sees what.
Generate a shareable link to any workspace. Business owners get the chat view. Developers get the code view. Everyone stays in sync without stepping on each other's toes.
Think Figma. Designers and developers look at the same file but see different interfaces. Nobody questions whether Figma is “for designers or developers” — it's for both.
Background Agents
Your AI workforce
never sleeps.
While your team focuses on strategy, background agents explore multiple solutions in parallel — testing for bugs and security flaws before showing anyone the result.
25
parallel agents
1000s
solutions tested
100%
pre-verified
How it works
Explore
Agents explore multiple solution paths simultaneously, testing different approaches to your request.
Validate
Each solution is tested for bugs, security flaws, and edge cases before anyone sees it.
Deliver
Only the best solution is presented — verified, reviewed, and ready for your team.
10 agents included with Pro. 25 agents with Team plan.
Pricing
Simple, transparent pricing
From free local inference to full team compute. Pick what fits.
Free
Open-source experimentation and local model inference
Compute
- 50 fast requests per day
- Unlimited local models (Ollama)
Runtime
- Linear inference only
- Standard context window
Collaboration
- Unlimited active share links
- Viewer-only mode
- Real-time file collaboration
- Real-time editing previews
Pro
Deep reasoning and infinite context for professional engineers
Compute
- Unlimited local and fast models
- ~750 frontier requests (Claude 4.5, GPT 5.2)
Horizon
- Scout swarm exploration
- L1-L2 adversarial verification
- Impact analysis engine
Memory
- Advanced contextual understanding
- Personal learning weights
Collaboration
- Unlimited share links
- Viewer & Editor access modes
- 1 concurrent editor per session
- Real-time collaboration
- Live editing & preview
Teams
Shared state and autonomous verification for engineering teams
Compute
- ~2,250 frontier requests (3x)
- Pooled team credits
Horizon
- Flash protocol instant pruning
- Shared failure vectors
- L3-L4 sandboxed verification
Collaboration
- Unlimited share links
- Viewer & Editor access modes
- Unlimited concurrent editors per session
- Real-time collaboration
- Live editing & preview
Governance
- SSO and SAML integration
- Advanced audit logging
Your entire team. One workspace. Ship 10x faster.
Founders describe. Developers build. AI accelerates. Join 5,000+ teams building software without boundaries. No credit card required.