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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>
Seed7 Homepage</title>
<meta name="author" content="Thomas Mertes" />
<meta name="copyright" content="Thomas Mertes" />
<meta name="keywords" content="Seed7, SeedSeven, Seed, Seven, 7, programming, language, extensible, extendable" />
<meta name="description" content="Seed7 - The extensible programming language" />
<meta name="page-topic" content="programming language, computer, software, downloads" />
<meta name="audience" content="all" />
<meta name="content-language" content="en" />
<meta name="robots" content="index,follow" />
<link rel="shortcut icon" href="images/favicon.ico" type="image/x-icon" />
<link rel="stylesheet" href="style3.css" type="text/css" />
</head>
<body style="margin:0 0 0 0;">
<div style="background-image: url('images/header1x.png');" class="top_image">
<img style="overflow:hidden;" src="images/hearts7m.png" height="68" width="50"
/><img style="overflow:hidden;" src="images/header3.png" height="68" width="745" />
</div>
<div style="background-image: url('images/fillpix.png');" class="space_below_top_image">
</div>
<div class="menu">
<a class="head" href="index.htm"><big>Seed7</big></a>
<a class="menu" href="faq.htm">FAQ</a>
<a class="menu" href="manual/index.htm">Manual</a>
<a class="menu" href="demo.htm">Demo</a>
<a class="menu" href="scrshots/index.htm">Screenshots</a>
<a class="menu" href="examples/index.htm">Examples</a>
<a class="menu" href="libraries/index.htm">Libraries</a>
<a class="menu" href="algorith/index.htm">Algorithms</a>
<a class="menu" href="benchmks/index.htm">Benchmarks</a>
<a class="menu" href="subject_index.htm">Index</a>
<a class="menu" href="http://sourceforge.net/project/showfiles.php?group_id=151126">Download</a>
<a class="menu" href="https://github.com/ThomasMertes/seed7">GitHub</a>
<a class="menu" href="build.htm">Build Seed7</a>
<a class="menu" href="links.htm">Links</a>
</div>
<div class="content">
<div style="padding-right:20;">
<h1>Welcome to the Seed7 Homepage</h1>
<p>
Seed7 is a general purpose programming language designed by Thomas Mertes.
It is a higher level language compared to Ada, C/C++ and Java.
The Seed7 <a class="link" href="faq.htm#interpreter">interpreter</a> and the <a class="link" href="scrshots/index.htm">example programs</a> are open-source software.
There is also an open-source Seed7 <a class="link" href="scrshots/s7c.htm">compiler</a>. The compiler translates Seed7
programs to C programs which are subsequently compiled to machine code.
</p><p>
In Seed7 new statements and operators can be declared easily.
Functions with type results and type parameters are more elegant
than a template or generics concept.
Object orientation is used where it brings advantages and
not in places where other solutions are more obvious.
Seed7 contains several concepts from Pascal, Ada, C, C++ and Java.
</p>
<h3>Features of Seed7</h3>
<ul>
<li>As an <a class="link" href="faq.htm#extensible_programming">extensible programming language</a> it supports user defined
<a class="link" href="examples/declstat.htm">statements</a> and <a class="link" href="examples/operator.htm">operators</a>.</li>
<li>Types are first class objects (<a class="link" href="examples/for_decl.htm">Templates and generics</a>
can be defined easily without special syntax).</li>
<li>Predefined constructs like arrays or <a class="link" href="examples/declstat.htm">for-loops</a>
are defined in libraries.</li>
<li><a class="link" href="manual/objects.htm">Object orientation</a> supports interfaces and <a class="link" href="faq.htm#multiple_dispatch">multiple dispatch</a>.</li>
<li><a class="link" href="faq.htm#static_type_checking">Static type checking</a> and the absence of <a class="link" href="faq.htm#automatic_casts">automatic casts</a> help to find errors at compile-time.</li>
<li>There is an <a class="link" href="faq.htm#garbage_collection">automatic memory management</a> that works without a garbage collection
process.</li>
<li><a class="link" href="manual/errors.htm#Exceptions">Exception handling</a> and <a class="link" href="manual/errors.htm#Stack_trace">source code debugging</a> are supported.</li>
<li>If an integer computation <a class="link" href="faq.htm#integer_overflow">overflows</a> the exception <tt><a class="link" href="manual/errors.htm#OVERFLOW_ERROR">OVERFLOW_ERROR</a></tt> is raised.</li>
<li>Numbers which have unlimited size are provided with the types <a class="type" href="manual/types.htm#bigInteger">bigInteger</a> and <a class="type" href="manual/types.htm#bigRational">bigRational</a>.</li>
<li>Functions, operators and statements can be <a class="link" href="faq.htm#overloading">overloaded</a>.</li>
<li>There are various <a class="link" href="manual/types.htm">predefined types</a> like <a class="type" href="manual/types.htm#array">array</a>, <a class="type" href="manual/types.htm#hash">hash</a>,
<a class="type" href="manual/types.htm#set">set</a>, <a class="type" href="manual/types.htm#struct">struct</a>, <a class="type" href="manual/types.htm#color">color</a>, <a class="type" href="manual/types.htm#time">time</a>,
<a class="type" href="manual/types.htm#duration">duration</a>, etc.</li>
<li>Seed7 programs are <a class="link" href="faq.htm#portable">source code portable</a> without any need to change the code.</li>
<li>Seed7 provides a <a class="link" href="faq.htm#database_access">database independent API</a>, which can
connect to MySQL, MariaDB, SQLLite, PostgreSQL, Oracle, ODBC, Firebird, Interbase,
Db2, Informix and SQL Server databases.</li>
<li>Seed7 runs under Linux, various Unix versions and Windows.</li>
<li>The interpreter and the example programs use the GPL
license, while the runtime library uses the LGPL license.
</ul>
</div>
</div>
</body>
</html>