I use short links for everything, and Dub is an amazing product that solves this really well. On top of this, they have amazing analytics features that I plan to also integrate into fyli at some point!
Cal is an amazing tool that saves me so much time manually scheduling onboarding calls. I have even started using their video calling solution as it's browser based, and super easy to use!
Supabase has been my staple for implementing authentication, and for whenever I need a Postgres database. They have amazing customer service, solid documentation and a generous free tier. It fits right at home in Next.js and it's hard to go wrong with this combo.
Vercel has been my default choice for deploying web applications since years, and I've never been disappointed. Recently, their AI SDK has also become my default for building AI integrations. I trust their work, and their attention to detail so it was an easy choice :)