# User guide

- [Profiles](/5.3/user-guide/profiles.md)
- [Instrumentation](/5.3/user-guide/profiles/instrumentation.md)
- [Live](/5.3/user-guide/live.md)
- [Data Browser](/5.3/user-guide/data-browser.md)
- [Data Analysis](/5.3/user-guide/data-analysis.md)
- [Metrics](/5.3/user-guide/metrics.md)
- [Data Masking](/5.3/user-guide/data-masking.md)
- [Agents](/5.3/user-guide/agents.md)
- [Managing Extensions](/5.3/user-guide/agents/managing-extensions.md)
- [Glossary](/5.3/user-guide/glossary.md)