Ikarus is a free optimizing incremental native-code compiler for R6RS Scheme.

Ikarus is free to download, to distribute, to modify, and to redistribute. The complete source is available according to the GNU General Public Licence (GPL3).

Ikarus is an optimizing compiler, so your Scheme code will run fast without the need to port hot spots to C "for performance". With an incremental compiler, you don't need a separate compilation step to make your program run fast. The best part is that the compiler itself is fast, capable of compiling thousands of lines of code per second.

Finally, Ikarus is an R6RS compiler. R6RS is the latest revision of the Scheme standard. The current release of Ikarus supports the most important features R6RS. R6RS libraries, scripts, record types, condition system, exception handling, unicode strings, bytevectors, hashtable, and enumerations are among the fully supported features.

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