DrScheme is a graphical, interactive programming environment. In addition
to editing and interactive execution facilities, DrScheme also provides
various student-friendly features, integrated library support, and
sophisticated analysis tools for advanced programmers.
MrEd has two facets. First, it is a portable, cross-platform graphical
toolbox used to build DrScheme and other applications. Second, it
provides advanced linguistic facilities to enable process-like features
within a single language run-time. Unless you intimately understand
your needs, we recommend that you use DrScheme. MrEd is
distributed as part of PLT Scheme.
MzScheme is the underlying text-only implementation: it provides all of
MrEd’s features except the graphics library and the eventspaces. Its
language offers several extensions to standard Scheme. The MzScheme
executable is relatively small and loads quickly, and is designed to be
used as an engine for executing scripts. Unless you need the
restricted interaction mode, we recommend that you use
DrScheme. MzScheme is distributed
by itself and as part of
PLT Scheme.
Under Windows and Mac OS X, stand-alone executables built with older
versions of PLT Scheme require a set of dynamic libraries. Although the
libraries are included with &plt;, we also provide installers
for just the libraries.
SrPersist connects to ODBC drivers for database access.
The Stepper
The Stepper presents the evaluation of Scheme programs through an
algebraic reduction semantics. The Stepper is included with
PLT Scheme.
Check Syntax
The syntax checker identifies syntax errors in programs, and provides
overlay arrows that demonstrate the binding structure of the program.
Check Syntax is included with PLT Scheme.
MrFlow is a static debugger that performs control-flow analysis on a
program to identify potential sources of errors, much like a type
inference engine.
![[logo]](http://plt-scheme.org/logo.png){kind=logo}