Binary descriptions:

ace-gperf: ACE perfect hash function generator
ace-gperf-dbgsym: debug symbols for ace-gperf
ace-netsvcs: ACE network service implementations
ace-netsvcs-dbgsym: debug symbols for ace-netsvcs
gperf-ace: ACE perfect hash function generator (transitional package)
libace-6.4.5: C++ network programming framework
libace-6.4.5-dbgsym: debug symbols for libace-6.4.5
libace-dev: No summary available for libace-dev in ubuntu cosmic.
libace-doc: C++ network programming framework - documentation
libace-flreactor-6.4.5: No summary available for libace-flreactor-6.4.5 in ubuntu cosmic.
libace-flreactor-6.4.5-dbgsym: debug symbols for libace-flreactor-6.4.5
libace-flreactor-dev: No summary available for libace-flreactor-dev in ubuntu disco.
libace-foxreactor-6.4.5: ACE-GUI reactor integration for FOX
libace-foxreactor-6.4.5-dbgsym: debug symbols for libace-foxreactor-6.4.5
libace-foxreactor-dev: No summary available for libace-foxreactor-dev in ubuntu cosmic.
libace-htbp-6.4.5: ACE protocol over HTTP tunneling library
libace-htbp-6.4.5-dbgsym: debug symbols for libace-htbp-6.4.5
libace-htbp-dev: No summary available for libace-htbp-dev in ubuntu cosmic.
libace-inet-6.4.5: ACE Inet protocol library
libace-inet-6.4.5-dbgsym: No summary available for libace-inet-6.4.5-dbgsym in ubuntu disco.
libace-inet-dev: No summary available for libace-inet-dev in ubuntu eoan.
libace-inet-ssl-6.4.5: No summary available for libace-inet-ssl-6.4.5 in ubuntu cosmic.
libace-inet-ssl-6.4.5-dbgsym: No summary available for libace-inet-ssl-6.4.5-dbgsym in ubuntu eoan.
libace-inet-ssl-dev: ACE SSL-enabled Inet protocol library - development files
libace-rmcast-6.4.5: ACE reliable multicast library
libace-rmcast-6.4.5-dbgsym: debug symbols for libace-rmcast-6.4.5
libace-rmcast-dev: No summary available for libace-rmcast-dev in ubuntu cosmic.
libace-ssl-6.4.5: No summary available for libace-ssl-6.4.5 in ubuntu cosmic.
libace-ssl-6.4.5-dbgsym: debug symbols for libace-ssl-6.4.5
libace-ssl-dev: No summary available for libace-ssl-dev in ubuntu disco.
libace-tkreactor-6.4.5: ACE-GUI reactor integration for Tk
libace-tkreactor-6.4.5-dbgsym: No summary available for libace-tkreactor-6.4.5-dbgsym in ubuntu cosmic.
libace-tkreactor-dev: ACE-GUI reactor integration for Tk - development files
libace-tmcast-6.4.5: No summary available for libace-tmcast-6.4.5 in ubuntu cosmic.
libace-tmcast-6.4.5-dbgsym: debug symbols for libace-tmcast-6.4.5
libace-tmcast-dev: ACE transactional multicast library - development files
libace-xml-utils-6.4.5: No summary available for libace-xml-utils-6.4.5 in ubuntu disco.
libace-xml-utils-6.4.5-dbgsym: debug symbols for libace-xml-utils-6.4.5
libace-xml-utils-dev: ACE XML utility classes and methods - development files
libace-xtreactor-6.4.5: No summary available for libace-xtreactor-6.4.5 in ubuntu eoan.
libace-xtreactor-6.4.5-dbgsym: debug symbols for libace-xtreactor-6.4.5
libace-xtreactor-dev: ACE-GUI reactor integration for Xt - development files
libacexml-6.4.5: ACE SAX based XML parsing library
libacexml-6.4.5-dbgsym: debug symbols for libacexml-6.4.5
libacexml-dev: No summary available for libacexml-dev in ubuntu cosmic.
libkokyu-6.4.5: No summary available for libkokyu-6.4.5 in ubuntu cosmic.
libkokyu-6.4.5-dbgsym: debug symbols for libkokyu-6.4.5
libkokyu-dev: No summary available for libkokyu-dev in ubuntu disco.
libnetsvcs-6.4.5: ACE network service implementations - libraries
libnetsvcs-6.4.5-dbgsym: debug symbols for libnetsvcs-6.4.5
libnetsvcs-dev: ACE network service implementations - development files
mpc-ace: No summary available for mpc-ace in ubuntu disco.

Last common version:

6.4.5+dfsg-1