30 open-source projects similar to haml/haml, ranked by shared indexed features. Tags may describe platforms or build tools rather than the same primary purpose. Check each project’s use case, license, and deployment requirements before treating it as a replacement.
Slim is a concise, indentation-based template language and markup engine for generating HTML and XML. Designed for the Ruby ecosystem, it converts shorthand syntax into well-formed documents without the need for traditional closing tags. The engine functions as a multi-engine wrapper, allowing the integration of external rendering engines such as Markdown and Sass within a single template file. It also provides a command line interface for rendering templates and converting them between different markup formats. The system supports dynamic content generation through embedded Ruby logic, incl
Liquid is a secure template engine and markup language used to generate dynamic HTML or text by combining static templates with backend data. It functions as a web template renderer that transforms markup into final output while restricting available logic to prevent arbitrary code execution. The engine focuses on secure markup execution, providing a restricted environment where user-provided templates cannot access sensitive system data. It utilizes a safe evaluation sandbox to ensure that only a predefined set of instructions can be executed. The system includes capabilities for template s
EJS is a JavaScript templating engine used to generate HTML by embedding executable JavaScript logic and dynamic data into template files. It functions as both a server-side template processor and a client-side rendering engine, allowing for the creation of dynamic markup in both backend and frontend environments. The engine supports the creation of modular web layouts through partial template inclusion, where smaller reusable components are inserted into parent pages. Users can modify the template syntax by defining custom delimiters to avoid conflicts with other languages. The project cove
Handlebars.js is a JavaScript templating engine and logic-less template library used to generate HTML or text by merging data objects with templates. It utilizes an abstract syntax tree parser to transform template strings into executable JavaScript functions. The system separates data from presentation by restricting complex logic to external helper functions rather than the template itself. It features a precompiled template compiler that converts templates into functions before deployment to increase execution speed and reduce startup latency. The engine covers a broad range of content ge
Emmet is a markup code generator and web development productivity toolkit. It serves as an expansion engine that converts shorthand abbreviations and CSS-like selectors into full HTML, XML, and other markup structures. The project features a dedicated CSS shorthand expansion engine that transforms concise property codes into full style declarations, including the automatic generation of vendor prefixes and gradients. It distinguishes itself by offering a programmable expansion process through custom snippet definitions, abbreviation alias mapping, and script-based extensibility. The toolkit
React is a JavaScript library for building user interfaces through the composition of modular, self-contained components. It employs a declarative programming model where developers describe the desired visual state, and the library automatically manages the underlying document updates and state synchronization. By utilizing a virtual representation of the document, it calculates and applies minimal changes to the browser, ensuring efficient rendering even in complex applications. The library distinguishes itself through a sophisticated scheduling system that manages rendering work in increme
Ripple is a full-stack TypeScript web framework and reactive UI library used for building interfaces with server-side rendering. It organizes user interfaces into a hierarchy of reusable, scoped components with built-in state management and client-side hydration. The framework is distinguished by its fine-grained reactivity, which updates specific DOM elements without requiring full component re-renders. It integrates server-side logic and client-side components within a single TypeScript codebase, enabling a unified full-stack development workflow. The system covers a broad range of capabil
Templ is a type-safe HTML templating engine and UI framework for Go. It provides a system for building reusable HTML components that compile into Go code for server-side rendering, ensuring type safety and compile-time validation of data and logic. The project features a dedicated language server that provides autocomplete and syntax validation for template files within supported code editors. It employs compile-time code generation to transform a custom template language into Go source code, enabling the creation of modular HTML fragments and logic blocks. The framework includes automated s
Practicalnode is a comprehensive educational resource and backend development framework for mastering server-side programming with Node.js. It provides a structured approach to building scalable network services, REST APIs, and real-time applications using asynchronous JavaScript. The project serves as a detailed implementation guide for several core backend patterns, including MongoDB data modeling and the construction of REST API development kits. It emphasizes a specific workflow for Docker containerization and offers a variety of strategies for managing user identity through stateless tok
koa2-note is a project focused on Koa2 web server development and Node.js asynchronous programming. It provides a framework for building web servers and APIs using an asynchronous middleware pipeline to handle request and response cycles. The project emphasizes a layered backend architecture that decouples routing, business services, and data models. It distinguishes itself through the integration of relational databases for persisting user sessions and application data, alongside a build process that includes JSX-to-JavaScript compilation for frontend assets. The capability surface covers b
Handlebars.js is a JavaScript templating engine used to generate HTML and other text formats by combining static templates with dynamic data. It functions as a logic-less template engine, separating presentation from business logic by restricting the complexity of expressions within templates. The project includes a precompiled template compiler that converts template strings into executable JavaScript functions. This mechanism reduces runtime overhead and improves rendering performance by shifting the compilation process to a build step. The engine provides a custom helper framework for ext
Marko is a component-based web framework and HTML-based template engine used to build reactive user interfaces. It functions as a server-side rendering framework that compiles declarative templates into optimized JavaScript for efficient browser execution. The framework utilizes virtual DOM-less rendering to map template expressions directly to DOM nodes. It employs ahead-of-time template compilation and server-side HTML streaming to send rendered fragments to the client in chunks. The system manages user interfaces through a component-based view hierarchy with reactive data binding and fine
Scriban is a .NET text templating engine and embedded scripting language used for dynamic text generation. It functions as an abstract syntax tree manipulation tool and a template parser, allowing for the conversion of scripts into visitable trees for analysis, modification, and rendering. The engine is specifically designed for Native AOT compatibility, utilizing a reflection-free API to execute templates in trimmed environments. It also provides a dedicated parser and conversion system for Liquid templates, enabling the migration and execution of Liquid scripts within .NET. The project cov
doT is a compiled JavaScript template engine and rendering system used to generate dynamic text and HTML for both browser-based interfaces and Node.js server-side environments. It transforms template strings into executable JavaScript functions to produce text output across different runtime environments. The system focuses on pre-compiling template source files into standalone JavaScript modules at build time. This process eliminates runtime compilation overhead, increases execution speed, and prevents malicious code injection. The engine supports logic-based interpolation using conditional
React is a JavaScript library for building user interfaces based on a component-driven architecture and unidirectional data flow.
Quarkus is a Kubernetes-native Java framework designed for building high-performance, memory-efficient applications. It utilizes ahead-of-time native compilation to transform Java code into standalone, optimized binaries that eliminate the need for a virtual machine, enabling rapid startup and reduced memory consumption. By performing code augmentation during the build phase, it shifts heavy processing tasks away from runtime, ensuring that applications are optimized for cloud-native environments. The framework distinguishes itself through a unified approach to reactive and imperative program
Phoenix LiveView is an Elixir-based framework that renders HTML on the server and sends only the changed parts to the client over a persistent WebSocket connection. It operates on a process-per-connection model, where each user session runs in its own isolated Elixir process for fault tolerance and independent state management, and includes a LongPolling fallback transport for environments where WebSocket connections are unavailable. The framework provides server-side rendered diffs and WebSocket-based state synchronization to maintain a continuous bidirectional channel between server and cli
TanStack Router is a type-safe routing library for web applications that provides full type safety for paths, search parameters, and data loaders across the entire application stack. It functions as a comprehensive framework for server-side rendering, enabling the generation of complete HTML pages to improve initial load performance and search engine optimization. By integrating declarative data fetching, the library manages asynchronous information at the route level, supporting preloading, caching, and parallel request execution to ensure data is ready before components render. The project
Remix is a full-stack web framework designed to manage data loading, mutations, and routing through standard web platform APIs. It functions as a server-side rendering framework that unifies server-side data processing and client-side interactivity within a single development model, ensuring applications remain consistent across diverse environments. The framework distinguishes itself by utilizing native web platform APIs for all request and response handling, including a declarative data mutation layer that synchronizes server-side database updates with client-side UI transitions via standar
This project is a social blogging application built with Flask. It provides a platform for user account management, following relationships, and chronological post streams, supported by a PostgreSQL relational database. The application features a multilingual web interface with localized content and date formatting. It is designed as a dockerized web application, utilizing containerization for consistent deployment across different environments. The system integrates a variety of core capabilities, including full-text search with provider abstraction, an asynchronous task worker for backgrou
This project is a reference implementation of a full-stack web application and server-side rendered blog. It demonstrates the integration of a Node.js and Express server with a MongoDB database using the Mongoose object document mapper for schema-based data modeling. The application features a complete user authentication system that supports local credentials and external identity providers via OAuth. It includes session management and security measures such as cryptographic password hashing and protection against cross-site request forgery. The system covers a variety of content management
This project is a comprehensive guide for writing Neovim configurations and plugins using the Lua programming language. It serves as a manual for using the native Neovim Lua API to manage buffers, windows, and editor options. The guide focuses on the interoperability between Lua and Vimscript, providing instructions on how to execute Vimscript from Lua and call Lua functions from within Vimscript. It also provides a framework for plugin development, covering the organization of code into external modules and the creation of custom commands and key mappings. The documentation covers broader c
Blazor is a .NET framework for building interactive web user interfaces using C# instead of JavaScript. It provides a component-based UI composition model where reusable, self-contained UI elements are built with C# logic and Razor markup, supporting nesting, parameters, and lifecycle events. The framework offers two primary rendering models: a client-side runtime that compiles C# to WebAssembly and executes directly in the browser, and a server-side model that renders UI on the server and sends incremental DOM updates over a persistent SignalR connection. A central capability of Blazor is it
aleph.js is a full-stack web framework for the Deno runtime. It integrates server-side logic and client-side interactivity within a single environment to build complete web applications. The framework functions as a server-side rendering system and a static site generator, producing pre-rendered HTML to improve search engine visibility and initial load speeds. It utilizes a file-based router that automatically maps the project directory structure to application URLs for both pages and API endpoints. The project includes capabilities for markdown-based content management, transforming markdow
This project is a starter template that provides a unified environment for building full-stack web applications by integrating the Vue.js framework with an Express server. It functions as a server-side rendering framework, enabling the execution of JavaScript on the server to generate HTML pages before they are delivered to the client. The template distinguishes itself by providing a cohesive architecture that bridges frontend rendering with backend API logic. It includes built-in mechanisms for server-side route protection and cookie propagation, ensuring that authentication states are maint
Kemal is a high-performance web framework for the Crystal language, designed for building scalable APIs and web applications. It provides a natively compiled web server environment that leverages ahead-of-time compilation to maximize request speed and minimize memory overhead. The framework is distinguished by a middleware-based routing engine that uses pattern-matching and a chainable pipeline for flexible request filtering. It includes a dedicated server-side template engine for generating dynamic HTML and a WebSocket communication server for bidirectional real-time messaging and state broa
Dialogic is a dialogue editor and runtime system for the Godot engine that provides a complete framework for creating branching conversations with characters, animations, and state management. At its core, it functions as a branching narrative editor with visual and text-based timeline authoring, a character animation manager that handles portraits and scene positioning, a localization tool that exports timelines to CSV for translation, and an interactive framework that manages player choices, text reveals, voice lines, and dynamic text effects within conversations. What distinguishes this sy
Elementor is a visual page builder for WordPress that provides a drag-and-drop interface for creating responsive layouts and custom themes. It functions as a comprehensive design system manager and theme builder, allowing for the creation of global website components such as headers, footers, and archive pages without writing code. The platform distinguishes itself through a dedicated popup builder with custom trigger conditions and a visual landing page creator that utilizes pre-made kits. It includes a global style registry to synchronize fonts and colors across all site elements and a widg
Angular Universal is a server-side rendering framework and static site generator for Angular applications. It provides the core engines and tools necessary to generate HTML on a server or during the build process to improve initial load performance and search engine optimization. The project enables both dynamic server-side rendering for on-demand HTML generation and build-time prerendering to create static files for predefined routes. It features a hydration engine that transfers server-side state and cached HTTP responses to the client, preventing the browser from duplicating network reques
ihp is a type-safe web framework and full-stack application orchestrator designed for PostgreSQL. It functions as a server-side rendering framework and a type-safe ORM that automatically generates record types from SQL schemas to ensure compile-time query validation. The platform distinguishes itself by verifying routing, database queries, and templates at compile time to prevent runtime crashes. It implements real-time web interfaces using WebSockets for instant data synchronization and employs server-driven hypermedia for partial DOM patching. The framework covers a broad range of integrat