
NapkinBook: a computional whiteboard
Computational whiteboard for data analysis and insights, no signup required.
tccole · HN
Napkinbook, a smart canvas for discovering, and sharing insights
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60 projects

Computational whiteboard for data analysis and insights, no signup required.
tccole · HN
Napkinbook, a smart canvas for discovering, and sharing insights

Generate synthetic test data that matches your database schema without production data.
@dmitrij90946 · X

Hosted JSON database for storing agent memory with REST and MCP connectivity
@StuSim · X
hey Adam, I run , lightweight agent memory

Managed hosting for Hermes Agent. Start with Hobby’s free 14-day trial—create, poll, and run usually under five minutes. No VPS. No SSH.
@RyanRayMartin · X

Migrate NoSQL databases to SQL with automated schema mapping and live change replication.
@heyayankai · X
🚀 Building NoSQLSync. It helps developers migrate NoSQL databases to SQL without writing custom migration scripts. Always happy to connect with fellow builders and AI enthusiasts.

Paste a URL to instantly preview your project in device mockups.
@AndreaPericoli · X
I couldn’t find a simple tool that did exactly what I needed, so I built one in @Lovable Frame Stage lets you paste a URL and instantly preview your project on desktop, tablet, or mobile. No mockups. No setup. 🌐 #vibecoding #AI

Store and sync files with end-to-end encryption that keeps them hidden from the server.
@vaultdesk · X

Browser tools for creating cloud, database, API, and workflow diagrams without signing up.
u/Sapo-Homien · Reddit
I build iLovePDF - but for Software Engineering. No Sign-up, No ads, No limits, Nothing leaves your browser. 22 browser tools for the stuff engineers keep redrawing: cloud architecture diagrams, ER diagrams, git branching, user flows, state machines, sequence & API diagrams, annotated screenshots, and an AI-prompt builder. No signup, no ads, no limits. Everything you need, runs in your browser. Open your browser's Network tab and watch a tool do its work without a single req

Create functional apps by describing them in plain language, no coding required.

Create and share landing pages or host HTML, PDFs, and images without signup.
hpko · HN
Yapp.page, publish a webpage from a Claude or ChatGPT chat

Unified backend offering authentication, payments, customer database, and AI analytics for SaaS and AI companies.
@NikChr1414 · X

Drop in a Statement (CSV or text-backed PDF), get Alerts three days before every subscription renews. Parsing happens in your browser; the file is never stored.
@SubPrune · X