Based on our record, Mantis Bug Tracker should be more popular than Zube. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Zube — Project management with free plan for 4 Projects & 4 users. GitHub integration available. - Source: dev.to / almost 3 years ago
I use https://mantisbt.org/ Mantis, no need of Docker. Source: over 1 year ago
Perhaps Mantis Bug Tracker? Admittedly I've never installed/used it myself, but looks to be built using PHP so might work on shared hosting. Source: almost 2 years ago
We use MantisBT at work. Simple, just a trouble ticket tracker, no bells and whistles, which is exactly what we wanted (along with a REST API I was able to integrate it into the app so that users don't even have to open the site). Source: about 2 years ago
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Jira - The #1 software development tool used by agile teams. Jira Software is built for every member of your software team to plan, track, and release great software.
ZenHub - ZenHub is how the world's best software teams work together. Trusted by NASA, Docker, and Rackspace. Start free today!
Redmine - Flexible project management web application
Nifty - Manage projects, work, and communications in one place.
Trac - Trac is a project management and bug/issue tracking system. Provides an interface to Subversion and an integrated wiki.