| Sandbox JLF | Experimental ooRexx 4 (snapshot 2012). |
| Executor | Experimental ooRexx 4 (work in progress). |
| Executor5 | Experimental ooRexx 5 (work in progress, low activity). |
| Rexx-GCI | Rexx Generic Call Interface (an adaptation of the official version in SourceForge): 64-bit, type aliases. |
| Builder | Scripts to build for several branches, configurations, bitness. |
| Adaptations | To build old releases of ooRexx with the builder scripts. |
| FormMath | 2D formatter for muLISP-87/muMATH (software from the 80s). |
| mini Prolog II | Port of mini prolog II to Ada-83 (software from the 80s). |