Since there appears to be no CTF2.5 thread, I'll just update here.
Lacewing Blue supports Windows XP+, Android 4.4.4+, iOS 10.0+, Mac 10.13+ (High Sierra+), UWP, and HTML5; cross-play is supported.
Servers run on Android, iOS, Mac 10.13+, Unix-based OS, or Windows XP+. (yes, you can run a crossplay server from your iPhone 5S)
Get public free-to-use server list here, downloads on last page of this forum thread, read help file here and get support on official Clickteam Discord.
Old post content:
[B]Lacewing[/B] is a multiplayer online extension, used to connect computers to servers and allow said computers to communicate.
Lacewing can be used in CTF2.5 and MMF2, [B]developer not required[/B].
Lacewing is primarily [B]Windows-only[/B]; there is a [B]port for SWF aka Flash exporter[/B].
There is a derivative which is somewhat less buggy and uses a more recent version of liblacewing, called [B]Bluewing[/B], or [B]Lacewing Blue Client[/B]. Bluewing is Windows-only.
Full details on how liblacewing, Bluewing, Lacewing, OINC, etc fit together, their history, are found at this page:
[URL="http://dark-wire.com/relay/"][SIZE=4]Lacewing history and server list[/SIZE][/URL]
The page also includes a [B]list of public servers[/B]. The availability of these servers is not guaranteed, but should be high; the more reliable ones are higher in the list.
With use of the Get object and a bit of code, you can download a textual list of servers and try each one; details for the list is on the page.
I recommend use of Bluewing, since I will fully investigate any bugs and it is open-source as well (written in C++), if you want to fix yourself. Again, details on the page.
In addition, [B]Bluewing's A/C/E's match up with those of regular Lacewing[/B], so you should be able to manually overwrite the MFX files for an instant upgrade. I wouldn't recommend that, though, since Bluewing has a few extra features - so reverting back with the MFA using those features will not work.
I recently fixed a bug so global event triggering will now work in Bluewing.
Let me know if you guys need more information on that page, or you encounter a bug with Bluewing, or want to fund a port to a different language. Contact by forum PM, email, or hang around in ClickConverse.