• Gecode solver which connects Gecode constraint programming environment to AMPL.
• Jacop solver which connects Java Constraint Programming solver (JaCoP) to AMPL.
• Sulum solver which connects Sulum LP and MIP solver to AMPL.
• Build support for COIN-OR solvers CBC and IPOPT.
• AMPLGSL, an AMPL function library providing access to the GNU Scientific Library (GSL) functions. See the AMPLGSL documentation.
• Database support on Linux and MacOS X. See Database and spreadsheet connection guide.
• CMake support and unit tests.
• SMPSWriter, a converter from deterministic equivalent of a two-stage stochastic programming (SP) problem written in AMPL to an SP problem in SMPS format.

Binaries for the open-source AMPL solvers and libraries for major platforms can be downloaded from the AMPL Google Code project.