Twilio
Design and deploy your ideal customer engagement experience. Twilio is a single fully-programmable platform with flexible APIs for any channel and over 400+ integrations, backed by a community of over 9 million developers. Build accurate and personalized experiences for your customers, easily and at scale, using SMS and WhatsApp messaging, voice, video, email, and more.
Browse documentation and SDKs in multiple coding languages, including Ruby, Python, PHP, Node.js, java, and C#, or jumpstart your first project with our open source code templates to quickly build production-ready communications apps. Sign up and start building today.
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Retool
Retool is an AI-powered platform that enables teams to build internal software, agents, and workflows faster using natural language and composable building blocks. It allows users to go from a simple prompt to a fully deployed application that works with their existing data, systems, and business rules. Retool connects seamlessly to databases, APIs, LLMs, and external tools to create production-ready applications. The platform supports building AI agents, dashboards, workflows, and full-stack internal apps with flexibility and control. Teams can design interfaces visually, customize logic with code, or generate components using AI assistance. Retool integrates with modern developer workflows, including version control, CI/CD, and testing. Overall, it helps organizations reduce development time while maintaining enterprise-grade security and reliability.
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Open SaaS
Open SaaS is a fully open source, full-stack SaaS starter kit built on the Wasp framework (React + Node.js + Prisma). It comes pre-integrated with core SaaS features, including user authentication (email, Google, GitHub), payment/subscription workflows via Stripe or Lemon Squeezy, file upload support (AWS S3), analytics dashboards (Plausible or Google Analytics), and an example AI-enabled app leveraging the OpenAI API for rapid prototyping. The template emphasises end-to-end type-safety, job scheduling, background tasks, and one-command deployment (e.g., wasp deploy) across hosting platforms like Fly.io, Railway, or custom providers. The codebase is organised vertically by feature (auth, payments, client UI, server logic, e2e tests) and includes guides for SEO, testing (via Playwright), deployment, updating, and customization. The project is MIT-licensed, free to use and distribute, and designed to eliminate boilerplate so developers can focus on building product logic.
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