Issue tracker
We didn't have one, and I couldn't find one that integrated properly with Subversion.
Integrated with SVN / Slack. Serves the whole dev department. Allows issues to be created/updated/tracked across the entire life cycle of the business.
Uses Markdown for the wiki.
I'm Andrew Gee, a Solution Architect working in the Birmingham area of the UK. This is my tech blog. Connect with me on LinkedIn.