ATFtyper

ATFtyper is an open-source software library and command-line tool that automates keyboard input for testing, data-entry automation, and assistive-technology research. Its primary goal is to simulate human-like typing with deterministic timing, supporting sequences of characters, modifier keys, and special keys across platforms.

It provides a cross-platform typing engine with configurable speed, delays, and error-modeling to reproduce realistic user input. The tool can operate in headless mode for automated environments, or attach to active applications for live testing. It supports scripts in JSON and YAML, and can be driven from common programming languages through bindings or simple CLI commands.

Under the hood, ATFtyper abstracts the target environment through backends that may rely on platform-specific APIs or GUI automation frameworks. It includes a hot-key and event-queue system, and exposes an API for composing complex typing patterns, such as tabbing between fields, pasting text, or generating randomized input for testing coverage.

Typical use cases include automated UI testing, data-entry replication, form population, and accessibility research. It is designed to be unobtrusive and scriptable, with emphasis on reproducibility.

Development and distribution: ATFtyper is released under an open-source license (MIT) with active maintenance by a community of contributors. Documentation is hosted online, including installation guides, API references, and example projects. It interoperates with other automation tools and has a growing ecosystem of plugins and bindings.