- Monitoring customer behaviour
- Talking to customers or support tickets or feedback
- Collecting customer's feature requests
- Product analytics
- APM
etc...
- Product analytics: https://www.uxwizz.com/
- Talking to customers or support tickets or feedback: Email/contact form using https://web3forms.com/
- Collecting customer's feature requests: This is a tough one, I am using https://uservoice.com/ but I don't like it that much. I am searching for a self-hosted alternative to https://canny.io/
Linear as Ticketing / Feature roadmap.
GSuite for email (Yes I provide support using email, and collect feature request in email as well, my SaaS is very small)