These commands are available to all players on 2a2b.me.
/spawn
Teleport to world spawn (0,0)
/tps
Check server TPS (ticks per second)
/msg <player> <message>
Send private message
/ignore <player>
Ignore a player in chat
/ping
Check your latency to the server
/coords
Show your current coordinates
/suicide
Kill yourself (drop your items)