Convex vs. Convex vs. FastScript vs. Solid Comparison Chart

Convex is an open source, reactive backend platform that enables developers to build full-stack applications entirely in TypeScript. It offers a document-relational database where queries and mutations are written in TypeScript, ensuring end-to-end type safety and seamless integration with frontend code. Convex's libraries maintain real-time synchronization between the frontend, backend, and database state without the need for manual state management, cache invalidation, or WebSockets. It includes built-in support for cloud functions, scheduling, authentication, file storage, and a variety of components that can be added with a simple npm i command. Developers can define their entire backend, including database schemas, queries, and APIs, in code, which is typechecked and autocompleted, and can be generated by AI with high accuracy. Convex's architecture ensures that all transactions are serializable, providing strong consistency guarantees and eliminating race conditions.

Solid is an AI-powered full-stack app builder that enables both technical and non-technical users to create, customize, and launch production-ready web applications, just as easily as making a TikTok. Unlike lightweight tools like Lovable or Base44 that generate superficial front-end facades, Solid delivers a complete, extendable codebase: a Node.js backend with Prisma ORM, a React + TypeScript frontend, and a seamlessly connected database, just like what professional developers use. You can import toy projects built with Lovable/Base44 and instantly transform them into robust, real apps that are scalable, transparent, and transferable. Solid supports deep customization; you own every layer (frontend, backend, data), allowing you to add complex business logic, REST or GraphQL APIs, and integrations effortlessly. It generates high-quality, inspectable code you can deploy anywhere, from Solid’s platform to your cloud, without vendor lock-in.