Can you step back further and explain what Renovate and its competitors like Mend actually do, and what kind of tasks people use them for?
Mend is not a competitor, renovate is the software, mend is the company.
They are tools that automatically check your repo for dependencies and create PRs when there are updates. It supports a wide range of package managers and other places dependencies may be specified.
Dependabot is another solution which is more „GitHub-native“ maybe.
In short, Renovate (by Mend) is a dependency manager for software projects. It watches your repository for outdated libraries, packages, and frameworks and opens Pull Requests to update them.
See also: https://news.ycombinator.com/item?id=40011111
(a blog post I wrote, prior to joining Mend and working as a Renovate maintainer)
To help you automate dependency updates, similar to dependabot.
https://www.mend.io/renovate/
https://github.blog/news-insights/product-news/keep-all-your...