Here is one of the last version of SyncTERM that works on Win95/Win98/WinME/NT/2000/XP.

May be other newer versions but i know that SyncTERM stopped working on win9x /me/etc around this time:
https://web.archive.org/web/20141224035446/ht … yncterm.net:80/

p.s. be sure to add my bbs's when testing 😉
The X-Bit (telnet) @ x-bit.org:23
The X-Bit (ssh) @ x-bit.org:2222
32-Bit BBS (telnet retro spitfire) @ x-bit.org:2323