Skip to content
whatismyalternative

Hack

A programming language developed by Meta, built for HHVM.

Visit Hack

Hack is a programming language developed by Meta that combines the fast development cycle of a dynamically typed language with static typing. It provides instantaneous type checking, asynchronous operations, generics, and XHP for type-checked UI code. Hack is built specifically for HHVM, a high performance runtime for Hack applications.

Hack provides incremental type checking as files are edited, asynchronous functions for cooperative multi-tasking and combining I/O requests, and a rich set of generic types including type parameters, constraints, associated type constants, and reification. XHP provides a native XML-like representation of output such as HTML, allowing UI code to be type-checked with automatic context-appropriate escaping of variables. Hack was open-sourced in March 2014 and is in active development alongside HHVM, with changes released frequently.

12 alternatives to Hack

Ranked by how well each tool replaces Hack: shared features, audience, price and popularity.

  1. .NET

    The modern, innovative, open-source programming language for building all your apps.

    Covers 2 of 8 key features and has a free plan.

    Free planOpen source
    60 out of 100 matchFree

  2. Hyper

    A terminal built on web technologies

    Covers 1 of 8 key features and has a free plan.

    Free planOpen source
    57 out of 100 matchContact sales

  3. Brackets

    Now Phoenix Code | Free Open Source Code Editor with Live Preview

    Covers 1 of 8 key features and has a free plan.

    Free planOpen source
    55 out of 100 matchContact sales

  4. OpenCode

    The open source AI coding agent

    Covers 1 of 8 key features and has a free plan.

    Free planOpen source
    55 out of 100 matchFree

  5. Clojure

    A robust, practical, and fast programming language combining approachability of scripting,

    Covers 1 of 8 key features.

    Open source
    54 out of 100 match—

  6. Inform

    A natural-language-based programming language for writers of interactive fiction.

    Covers 1 of 8 key features and has a free plan.

    Free planOpen source
    54 out of 100 matchContact sales

  7. D Programming Language

    D is a general-purpose programming language with static typing, systems-level access, and

    Covers 1 of 8 key features.

    Open source
    54 out of 100 match—

  8. glot.io

    Run and share code in dozens of languages — open source.

    Covers 1 of 8 key features and has a free plan.

    Free planOpen source
    54 out of 100 matchContact sales

  9. Swift

    Swift is a general-purpose programming language built using a modern approach to safety

    Covers 1 of 8 key features.

    Open source
    54 out of 100 match—

  10. GAP

    A System for Computational Discrete Algebra

    Covers 1 of 8 key features and has a free plan.

    Free planOpen source
    53 out of 100 matchFree

  11. Free Pascal

    Open source compiler for Pascal and Object Pascal

    Covers 1 of 8 key features.

    Open source
    53 out of 100 match—

  12. Elm

    A delightful language with friendly error messages, great performance, and small assets

    Covers 1 of 8 key features.

    Open source
    52 out of 100 match—