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SaaS products & open-source projects
Explore handpicked SaaS products, open-source projects, and 65+ free developer tools,
plus cheat sheets, snippets, and free resources — curated for builders.
Trending Leaderboard
Top products and open-source projects gaining attention this week.
UI DiscoveryA curated library of real production interfaces for designers and engineers, with original AI build prompts for Cursor, Claude, and similar tools.11
MassvaiMassvai turns a prompt into a full-stack Next.js 15 + TypeScript + Tailwind app with live preview, Supabase auth and database, Stripe, GitHub sync and one-click Vercel deploy. You own and can export the code.12- LinqryPrivacy-friendly analytics that finds drop-offs in your onboarding, maps user flows, attributes revenue, tracks links and answers questions in plain English.382
- 4
NOS WorkspacePaste or upload HTML, edit visible text, and share updates through one stable link. Keep ordinary documents in the same workspace.23 - 5
CPFHub.ioCPFHub.io is a REST API for Brazilian CPF data. Simple lookup returns name, gender and birth date (~150 ms typical). Real-time lookup checks situação cadastral and death year directly at Receita Federal. Bulk jobs, MCP server for AI agents, OpenAPI spec. Free plan: 50 credits/month, no card.21
Open Source Projects
Discover trending GitHub repositories.
ESC JSON Form Angular
Angular Standalone Component for JSON Form Editing
esc-editor
Esc-editor is a feature-rich, TypeScript-friendly WYSIWYG editor for React that provides robust table support, image resizing, and dark mode via CSS custom properties.
awesome-iot — 🤖 A curated list of awesome Internet of Things projects and resources
🤖 A curated list of awesome Internet of Things projects and resources.
Build Your Own X
Build Your Own X is an open-source learning platform that guides users through recreating complex technologies from scratch, fostering deep understanding and practical skills.
awesome-selfhosted — A list of Free Software network services and web applications which can be hosted on your…
A list of Free Software network services and web applications which can be hosted on your own servers
Python - 100天从新手到大师
详细解读与学习路径：本书作者骆昊以其清晰、系统的讲解风格，为初学者和进阶者提供了一条完整的Python学习路线。涵盖语言基础、实际应用、数据分析、机器学习及团队项目开发等全方位技能树。
Free Developer Tools
Rotates daily67+ browser-based tools that work instantly with no signup
SQL Formatter with Uppercase Keywords
Format and beautify SQL queries with proper indentation
JSON to YAML Converter
Convert JSON objects to clean, readable YAML format
HTML Minifier for Comments and Inter-Tag Whitespace
Minify HTML by removing whitespace and comments
AI Readability Score
Calculate rule-based readability scores for your content
cURL to Fetch Converter
Convert cURL commands to JavaScript fetch() calls instantly
Markdown Preview with Split Pane and Shareable Link
Render Markdown as a shareable preview page
Latest from the Blog
Insights, guides and stories for builders.
Version Comparison Has No Standard
SemVer defines no range syntax. Debian, PEP 440, npm, Maven, RPM and Go each order versions differently, and the cross-ecosystem spec is still unpublished.
A local model in Copilot CLI is not local privacy
Copilot CLI 1.0.94-0 discovers local Ollama models, but GitHub says that does not enable offline mode or disable telemetry. Those are separate settings.
node:sqlite renamed DatabaseSync to Database
Node 26.11.0 renamed DatabaseSync to Database. The old names survive as documentation-only aliases, so no code breaks and no runtime warning fires.
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