Tools and apps

Lingo4G command line tools invoke high-level Lingo4G functions, such as indexing or starting the REST API server. Lingo4G Explorer is a browser-based app that showcases some of the text processing capabilities of Lingo4G.


The l4g command line tool is the entry point to all Lingo4G functions, including:

The l4g tool is Java-based. See the Requirements page for all other requirements and recommendations.

Lingo4G Explorer

Lingo4G Explorer is a set of browser-based apps that demonstrate specific text analysis capabilities of Lingo4G. Currently, the main part of Lingo4G is the JSON Sandbox app, which helps to write, execute, tune and debug Lingo4G analysis requests.

See the REST API quick start tutorial for an introduction to building Lingo4G analysis requests.

Lingo4G Explorer running the JSON Sandbox app (light theme).
Lingo4G Explorer running the JSON Sandbox app (dark theme).

Lingo4G Explorer running the JSON Sandbox app.

Lingo4G Explorer (legacy)

The legacy Explorer app offers a visualization-oriented user interface for selected text analysis operations, such as clustering and 2d mapping of labels and documents. Future versions of the 2.x line of Lingo4G will bring similar functionality to the non-legacy version of Explorer. Until that happens, Lingo4G 2.x ships with both the official and the legacy versions of the Explorer app.

See the Quick start tutorial for a quick overview of the features available in the legacy Lingo4G Explorer.

Lingo4G Explorer legacy app.

User interface of the legacy Lingo4G Explorer app.