

I suppose I would choose Darcs & Pijul for version control systems to bit into Git hegemony (& if you prefer Git hegemony, don’t use proprietary code forges).
Additionally just the general vibes of IRC & XMPP for battle-tested chat applications that are lightweight for clients & servers alike. These are the kinds of tools your next community should be built on if you want to minimize resource usage (data plans, storage capacity, battery, CPU churn).
Pijul decouples your identity from you commits & proves your SSH key ownership. It is a beautiful thing that you can change your name or email & not have to get a force push to update all that info since you are now just identified by the primary key from the identity server. No more worries about being embarrassed by your old Protonmail or GMail account,no more dead names in the commit history, & no care about identity stealing by just changing the config.