It's often assumed that because Twitter has a larger userbase than the Fediverse, that accounts would automatically get more followers there.
However, many accounts (especially FOSS projects) have more followers here on the Fediverse.
Some examples (as of 26th July 2021):
@fdroidorg has 10.8k vs 7.33k on Twitter
@k9mail has 1.57k vs 680 on Twitter
@Minetest has 1.39k vs 785 on Twitter
If you know any Libre projects that are yet to join the Fedi, please ask them to give it a go!
@FediFollowsWow, that's unexpected 😀@fdroidorg @k9mail @Minetest
Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.