Synonyms for Synchronously:

adv.

concurrently (adverb)
coincidentally, concurrently, cooperatively, unitedly, synergistically, co-actively.
simultaneously (adverb)
Concomitantly, contemporaneously, simultaneously.
synchronously (adverb)
coincidentally, concurrently, contemporaneously, simultaneously, Concomitantly, unitedly.

adv

concurrently (adverb)
concurrently, cooperatively, synergistically, coincidentally, co-actively, unitedly, contemporaneously.
simultaneously (adverb)
concurrently, coincidentally, simultaneously, contemporaneously, Concomitantly.
together (adverb)
concurrently.

Other synonyms:

adv
simultaneously.