Downloads
Latest major release
- SWAP version 4.3.0 (release date May, 2026)
Latest available development branch
- SWAP version 4.3.1 (release date June, 2026)
Older versions
Previous SWAP versions 4.x.x (4.2.0, 4.0.1) are available here
Upon reasonable request (via swap mailbox) the following old versions can be send privately.
- SWAP 3.2.36, SWAP 3.2.26, SWAP 3.2.16, SWAP 3.2.14, SWAP 3.2.11, SWAP 3.0.3a, SWAP 3.0.3
- SWAP 209d, SWAP 207d
TTutil
The model SWAP uses the Fortran library TTUTIL for input from files. The Fortran library TTUTIL is a collection of subprograms dealing with often returning problems like input from file, output to file, character string handling, string decoding, file name and unit number handling, date/time handling and more. The TTUTIL library is maintained by EcoCurves (mailto: kees.rappoldt@ecocurves.nl).
Reference
van Kraalingen, D.W.G. & C. Rappoldt. 2000. Reference manual of the FORTRAN utility library v. 4. Report 5. Plant Research International, Wageningen, The Netherlands.
Download
The TTutil source is included in the latest download of SWAP.