The following ILSes are currently integrated with SimplyE, although there might be differences among versions:
- Biblionix Apollo - SIP
- Evergreen
- Koha - SIP
- III Sierra - SIP
- III Polaris - SIP, minimally:
- Version: 5.1.261
- Version: 5.2.199
- Version; 5.0R0 Build 191
- TLC CARLX - SIP
- SirsiDynix Symphony - SIP
- SirsiDynix Horizon - SIP