Welcome to TOL Project

What is TOL?

TOL is the Time Oriented Language.

It is a programming language dedicated to the world of statistics and focused on time series analysis and stochastic processes.

It is a declarative language based on two key features: simple syntactical rules and powerful set of extensible data types and functions.

TOL can be used from a small text console, but there is also a graphical interface to easily handle all language's tools and functions, providing powerful graphical capacities.

TOL is distributed under the GNU GPL license. A copy of this license is included within the TOL source code and can be accessed following this ​link.

TOL Software

source:tol/tolbase/lib/toltk/images/tolbase.ico

TOL provides a GUI (Graphical User Interface) called TOLBase. It is useful for evaluating TOL code, editing TOL files and also manage full projects written in TOL.

TOL provides also a command line interpreter and libraries to develop applications integrated with VBA or R. The developer can also use the binding with other languages such as C++ and Tcl. For more details, see Software.

If you want to try it, visit Download and Installation.

You can learn TOL by reading the Manuals. Enjoy.

Last modified 13 hours ago Last modified on Oct 21, 2026, 12:23:12 PM