Free Web App Development Tools

Open-source application server with type-safe APIs, real-time data, JS runtime, and intuitive admin UI built on Rust, SQLite, and V8.

Firebase, provided by Google, is a backend service and application development platform. It uses AI, cloud infrastructure, and cross-platform SDKs for efficient app development. Firebase offers tools and infrastructure for app creation and business growth.

AWS App Studio is a generative AI–powered, low-code application building service. Start building business applications, without software development skills, in minutes.

The open source Firebase alternative. Supabase adds realtime and restful APIs to Postgres without a single line of code.

Budibase is an open-source low-code platform, helping developers and IT professionals build, automate, and ship internal tools 50x faster on their own infrastructure.

No-code platform with drag-and-drop editor and AI-driven generator, Bubble allows scalable app creation without coding skills. Perfect for all users.

Open Source realtime backend in 1 file.

Your business needs software. But because engineers are scarce, many departments (sales, marketing, support, HR, etc.) don’t build the software they need. When companies use Retool, they build much more software, which leads to a more efficient business.

Creates production-ready, cross-platform mobile apps from written descriptions using AI and React Native, requiring no coding or technical background.

Jmix provides powerful full stack architecture along with Rapid Application Development tools for easy start and fast development of modern business web applications.

Effortlessly convert Google Sheets into polished, shareable mobile apps, and publish to app stores. No coding needed, with options for custom branding.

Cross-platform framework for creating mobile and desktop apps for iOS, Android, WinCE, Sailfish OS, Windows, Linux and OS X.

Stacktape is a tool that simplifies AWS for developers, enabling quick deployment of production-grade infrastructure. It transforms complex tasks into more manageable processes. Developers can now use an interactive config editor instead of manually writing YAML files, allowing...

No-code platform with drag & drop for designing apps for iOS, Android, and web. Custom apps publish to app stores or standalone sites.

Saltcorn is a platform for building database web applications without writing a single line of code. Use the intuitive point-and-click, drag-and-drop user interface to build the whole application

One codebase, every platform. Dioxus is a React-inspired library for Rust focused on developer experience. Build fast, beautiful, and fully-featured apps for every platform in less time.

Opa is an open source, simple and unified platform for writing web applications. All aspects are directly written in Opa: Frontend code, backend code, database queries and configuration. And everything is strongly statically typed.

SQLPage is an open-source low-code web application development framework. It allows users to build and deploy web applications quickly and easily using only simple SQL queries. SQLPage is compatible with multiple databases including SQLite, MySQL, and PostgreSQL, enabling...

An open source native runtime that makes it easy to build cross-platform apps that run equally well on iOS, Android, and the Web.

Self-constructing web app framework with no API, just a few, simple rules.

Ably’s APIs provide developers with the infrastructure to power realtime functionality at any scale. Instead of building and operating infrastructure, engineers can focus on shipping the features and functionality that matter to their customers.

Portofino is a free and open source web framework that helps developers create outstanding enterprise applications by addressing three specific needs: productivity, features and architecture.

Disc works in your device.

Durandal is a cross-device, cross-platform client framework written in JavaScript and designed to make Single Page Applications (SPAs) easy to create and maintain.

Chaplin is an architecture for JavaScript applications using the Backbone.js library. Chaplin addresses Backbone’s limitations by providing a lightweight and flexible structure that features well-proven design patterns and best practices.