All my products mostly start with these list of essential services, but can do away with the free plans until the product grows.

* Github for repositories (Free) * Namecheap for DNS * Zoho for emails (free for 5 email accounts) * Mailgun for emails (1250 emails per month free) * Trello for project management (free) * Airbrake for error monitoring (7.5 errors per month free) * Tawk.to for customer support contact form (free) * Netlify for frontend hosting (free) * Cloudflare for CDN (free) * Hetzner for servers. (this is the only paid service :), but its only $2.70 per month for a 1Vcpu 2GB ram vps) * Paddle for payments (they take 5% cut which is very reasonable for the services they offer)

This stack pretty much allows me to just invest "time" into a project and get it out, before scaling it.