If you have written a server or are aware of one that’s not listed please let me know by email at andrewmbenton@gmail.com.
C/C++
- omapd, IF-MAP 1.1/2.0 server built with the Qt framework, maintained by David Mattes
Java
- irond, IF-MAP 2.0 server built within the IRON project at the Hannover University of Applied Sciences and Arts and maintained by their Trust@FHH group