Version 142 (modified by Maxim Reznik, 14 months ago) ( diff )

Add 20.1 release into the NewsFlash

2020/06/26 Matreshka 20.1 Released

We are pleased to announce new major release of Matreshka. See Release Notes for more information and visit Download to download source code and binary packages.

2015/05/13 Ada to JavaScript translator

Development version of Matreshka provides Ada to JavaScript translator and run-time library to run Ada applications in Web browsers and other JavaScript engines.

2015/01/22 Web-application server with Servlet API

Development version of Matreshka provides server-independent implementation of well known Servlet API and web-application server Spikedog to execute Ada applications build on top of this API.

Welcome to Matreshka project

Matreshka is Ada framework to develop information systems. It includes:

  • League - a rich set of reusable core components to develop Ada applications. Its main purpose is to provide a high level abstraction tool for localization, internationalization and globalization of applications, as well as a portable interface to different operating systems. It contains many other useful features, among them advanced calendrical calculations, regular expressions, and JSON support to process and generate data in JSON format;
  • XML processor - provides the capability of manipulating XML streams and documents; including:
    • SAX reader to read XML streams and documents; it supports XML1.0 (Fifth Edition), XML1.1 (Second Edition), Namespaces in XML and XML Base specifications;
    • SAX writer to generate XML streams and documents from application;
    • XML Catalogs resolver;
    • Markup Templates Engine to process XML templates and generates XML or HTML/XHTML output 0.6.
  • Web framework
    • standalone application server - SpikeDog implemented over AWS (Ada Web Server) with Servlet API 0.7
    • the FastCGI module assists with developing server side applications completely in Ada and using them with standard HTTP servers. (demo).
    • the SOAP module provides implementation of SOAP 1.2 protocol specification and assists in developing Web Services in Ada. This module includes implementation of standard security services: The WS-Security module provides SOAP message Security 1.1 (WS-Security 2004) and Web Service security: Username Token Profile 1.1.
    • WSDL to Ada translator.
    • Ada to JavaScript translator and run-time library.
  • SQL database access provides a simple generic API for accessing SQL databases. Supported databases include:
    • MySQL is the world's most popular open source database software;
    • Oracle is a well known commercial database management system;
    • PostgreSQL is a powerful, open source object-relational database system;
    • SQLite3 is a in-process library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine;
    • Firebird is a relational database offering many ANSI SQL standard features that runs on Linux, Windows, and a variety of Unix platforms.
  • Ada Modeling Framework provides implementation of OMG's Meta Object Facility (MOF) written completely in Ada. Extension modules are provided to assist in the analysis and modification of:
    • UML models and their extensions:
      • MOF Extensions to support metamodeling
      • OCL models
      • UML Testing Profile to support Model-Driven Testing
    • Diagram Definition

Large number of specifications are used and are supported, see Specifications for complete information about conformance to specifications.


Matreshka is distributed under three-clause BSD license.


Matreshka is available in both source code and binary packages form for some operating system. See Download for more information.


User's Guide

User's Reference

There are several articles at Ada-Ru Community site available, but they are in Russian.


Commercial support of Matreshka is provided by Vadim Godunko, IE. Please contact us if you have questions.

Developers of open source software can use several community based support channels:



You can ask questions on #ada channel on FreeNode network. Russian speaking people can use XMPP conference room

Applications using Matreshka

Commercial Applications

  • ActForex, Inc. uses Matreshka to develop server side software of next generation of ActForex Trading Platform.

Open Source Projects

  • Ada XMPP implementation of XMPP protocol in Ada
  • AXE next generation of web-engine for Ada-Ru site
  • QtAda 4 generation of QtAda binding uses Ada Modeling Framework of Matreshka

Open projects

Modules below are in development or waiting for volunteers. Don't hesitate to contact us if you want to participate!

Note: See TracWiki for help on using the wiki.