The files listed on here are plugins and extensions that are needed among all standard source engine servers. However these plugins have files that are specific to the platform.
Extensions
Accelerator This replaces the default crash handeler which doesn't take in sourcemod into account. Accelerator tis all crashes to a specific steam account (as determined by core.cfg) and updload them to https://crash.limetech.org/ for analyst. https://forums.alliedmods.net/showthread.php?t=277703
cURL A free and easy-to-use client-side URL transfer library, supporting DICT, FILE, FTP, FTPS, GOPHER, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMTP, SMTPS, TELNET and TFTP. libcurl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies, cookies, user+password authentication (Basic, Digest, NTLM, Negotiate, Kerberos), file transfer resume, http proxy tunneling and more! https://forums.alliedmods.net/showthread.php?t=152216 https://code.google.com/archive/p/sourcemod-curl-extension/downloads
STEAM TOOLS A library that provides more functionality to plugins. https://forums.alliedmods.net/showthread.php?t=236206