Try dot net core (Language C#, IDE Visual Studio), comes with built-in templates to get you started. Integrates well with relational and non-relational dbs. Also can use Angular, React etc. for front-end logic.
please check out the Atlassian products (Bitbucket, Jira Software, Confluence, Bamboo) https://www.atlassian.com , you can try each product individually, and/or all these products work together really well.